{"title":"Roof Elastic Waterproofing Membranes","description":"\u003cdiv style=\"background:#f0f4f8;border-left:4px solid #a02c2c;padding:16px;margin-bottom:24px;\"\u003e\n\u003cstrong\u003eSummary:\u003c\/strong\u003e\n\u003cp\u003eRoof elastic waterproofing membranes are liquid-applied coatings made from polyurethane (PU) or acrylic polymers that cure into seamless elastic films. Elongation can exceed 1000%, accommodating thermal expansion and contraction without cracking. Cold-applied for safe, simple installation — suitable for rooftops, terraces, balconies and exterior walls.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eHow to Choose a Roof Waterproofing Membrane?\u003c\/h2\u003e\n\n\u003cp\u003eSelect based on \u003cstrong\u003eapplication area\u003c\/strong\u003e and \u003cstrong\u003eexposure conditions\u003c\/strong\u003e:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eExposed rooftop (no protective layer)\u003c\/strong\u003e → Choose UV-resistant formulas, e.g. \u003ca href=\"\/en\/products\/sika-西卡\"\u003eSika Sikalastic 680\u003c\/a\u003e, \u003ca href=\"\/en\/products\/hyperdesmo®-classic\"\u003eHyperdesmo Classic\u003c\/a\u003e, \u003ca href=\"\/en\/products\/馬貝-mapei-aquaflex-roof-20l\"\u003eMapei Aquaflex Roof\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUnder tiles or screed\u003c\/strong\u003e → Non-exposed types, e.g. \u003ca href=\"\/en\/products\/alchimica-hyperdesmo®-s-wr\"\u003eHyperdesmo S-WR\u003c\/a\u003e (low VOC, non-hazardous), \u003ca href=\"\/en\/products\/daviaproof-340\"\u003eDaivaproof 340\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eExterior walls or vertical surfaces\u003c\/strong\u003e → Non-sag formulas, e.g. \u003ca href=\"\/en\/products\/西卡永聯結-sika-ronacrete-monoprufe-rtu-801\"\u003eSika Ronacrete Monoprufe RTU 801\u003c\/a\u003e, \u003ca href=\"\/en\/products\/富斯樂-富粘-fosroc-nitoproof-800-10kg\"\u003eFosroc Nitoproof 800\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLarge area spray application\u003c\/strong\u003e → Airless spray compatible, e.g. \u003ca href=\"\/en\/products\/hyperdesmo®-300\"\u003eHyperdesmo 300\u003c\/a\u003e, \u003ca href=\"\/en\/products\/polybit-polythane-p-20l\"\u003ePolybit Polythane P\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePrimer \/ adhesion promoter\u003c\/strong\u003e → Use with dedicated primers, e.g. \u003ca href=\"\/en\/products\/alchimica-universal-primer-2k-4060\"\u003eAlchimica Universal Primer 2K-4060\u003c\/a\u003e, \u003ca href=\"\/en\/products\/富斯樂-富粘-fosroc-nitoproof-600pf-25kg\"\u003eFosroc Nitoproof 600PF\u003c\/a\u003e (primer)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eBrands Available\u003c\/h2\u003e\n\n\u003cp\u003eWah Hing supplies Sika, Alchimica (Hyperdesmo series), Fosroc (Nitoproof series), Mapei, Daivaproof, Polybit, and PFC roof waterproofing membranes and primers. Most products typically in stock; WhatsApp us for availability and delivery.\u003c\/p\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhat is the difference between elastic membrane and cement-based waterproofing?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eElastic membranes can stretch with the substrate, with elongation typically exceeding 300% or even 1000%, preventing cracks from thermal movement. Traditional cement-based waterproofing is rigid and prone to cracking under the large temperature differentials found on rooftops.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eCan I apply roof waterproofing membrane myself?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eLiquid membranes are cold-applied by roller or brush, making them relatively straightforward. However, surface preparation (cleaning, crack repair, priming) significantly affects performance. Refer to product technical data sheets or consult relevant professionals.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eHow often does roof waterproofing need to be redone?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eMembrane lifespan depends on product type, application quality and environmental conditions. Quality PU membranes can last 10–15 years. Annual inspection is recommended; repair promptly if you notice ageing, blistering or localised damage.\u003c\/p\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003e\u003cstrong\u003eWhere to buy roof waterproofing materials?\u003c\/strong\u003e\u003c\/summary\u003e\u003cp\u003eWah Hing Construction Waterproofing Materials is located on Canton Road, Mong Kok. Browse our website or WhatsApp us for product details, pricing and delivery arrangements.\u003c\/p\u003e\u003c\/details\u003e","products":[{"product_id":"富斯樂-富粘-fosroc-nitoproof-600pf-25kg","title":"Fosroc Nitoproof 600PF","description":"\u003ch2\u003eFosroc Nitoproof 600PF — Polyurethane Waterproofing Membrane\u003c\/h2\u003e\n\u003cp\u003eFosroc Nitoproof 600PF is a single-component, moisture-curing polyurethane waterproofing membrane that forms a seamless, elastic, and durable waterproof layer. It provides excellent UV resistance and weathering performance for exposed roof applications.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-component polyurethane waterproofing membrane\u003c\/li\u003e\n\u003cli\u003eSeamless, elastic waterproof coating\u003c\/li\u003e\n\u003cli\u003eUV-resistant for exposed applications\u003c\/li\u003e\n\u003cli\u003eExcellent adhesion to various substrates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFlat roof waterproofing\u003c\/li\u003e\n\u003cli\u003eTerrace and balcony waterproofing\u003c\/li\u003e\n\u003cli\u003eDetail waterproofing around penetrations\u003c\/li\u003e\n\u003cli\u003eRefurbishment of existing waterproofing systems\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Fosroc 富斯樂","offers":[{"title":"Default Title","offer_id":43646953783446,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Fosroc_Nitoproof_600PF_25KG.png?v=1754554367"},{"product_id":"富斯樂-富粘-fosroc-nitoproof-800-10kg","title":"Fosroc Nitoproof 800","description":"\u003ch2\u003eNitoproof 800 — Exposed Polyurethane Waterproof Membrane\u003c\/h2\u003e\n\u003cp\u003eNitoproof 800 is a polyurethane liquid-applied waterproofing membrane by Fosroc that can be left fully exposed without a protective screed or tile covering. UV-stable and trafficable for light foot traffic, it cures to form a seamless, flexible membrane that bridges hairline cracks caused by thermal movement. Its smooth surface is easy to clean and inspect, making maintenance straightforward.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eKey uses:\u003c\/strong\u003e exposed rooftop waterproofing, terraces, balconies, podium decks, maintenance walkways, lightweight roof refurbishment where screed loading is restricted.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003e800 vs 600PF:\u003c\/strong\u003e Use 800 for exposed, walkable surfaces without screed. Use 600PF when tiling or screeding over the membrane — more economical but requires a protective layer.\u003c\/p\u003e","brand":"Fosroc 富斯樂","offers":[{"title":"Default Title","offer_id":43646975082646,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/fosroc-logo-high-performance-sealing-products.jpg?v=1760463941"},{"product_id":"西卡永聯結-sika-ronacrete-monoprufe-rtu-801","title":"Sika Ronacrete Monoprufe RTU 801","description":"\u003cdiv class=\"tldr-box\" style=\"background:#f0f4f8;border-left:4px solid #2c5282;padding:16px;margin-bottom:24px\"\u003e\n\u003cstrong\u003eSummary:\u003c\/strong\u003e\u003cp\u003eMonoprufe RTU 801 is a single-component, water-based modified polyurethane waterproofing membrane by Sika Ronacrete. UV resistant, no discolouration or yellowing. Elongation \u003e300%, tensile strength \u003e2.5 MPa. For flat roofs, external walls, metal roofs, decks, and canopies. 20 kg drum, 12-month shelf life.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eMonoprufe RTU 801 — UV Resistant High Elasticity Polyurethane Waterproofing Membrane\u003c\/h2\u003e\n\u003cp\u003eMonoprufe RTU 801 is a highly versatile single-component water-based modified polyurethane waterproofing membrane with excellent elasticity and high technical performance. Suitable for application onto damp or dry concrete, stone, metal, asphalt, and wood. UV resistant, solvent-free, with no discolouration or yellowing over time. Supplied pre-blended and ready to use, with a long pot life ideal for large areas and surfaces with complicated details such as behind curtain walls and cladding systems.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSingle-component water-based modified polyurethane, pre-blended and ready to use\u003c\/li\u003e\n\u003cli\u003eElongation \u003e300%, tensile strength \u003e2.5 MPa — excellent elasticity\u003c\/li\u003e\n\u003cli\u003eTear strength \u003e20 kN\/m\u003c\/li\u003e\n\u003cli\u003eUV stable — no discolouration or yellowing\u003c\/li\u003e\n\u003cli\u003eSolvent free, low VOC (21 g\/L)\u003c\/li\u003e\n\u003cli\u003eSolid content \u003e60% by weight\u003c\/li\u003e\n\u003cli\u003eStrong adhesion to concrete, metal, asphalt, stone, and wood\u003c\/li\u003e\n\u003cli\u003eLong pot life suitable for large and complex areas\u003c\/li\u003e\n\u003cli\u003eAvailable in grey and white, with other colours on request\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFlat roofs and metal roofs\u003c\/li\u003e\n\u003cli\u003eExternal walls and curtain wall systems\u003c\/li\u003e\n\u003cli\u003eDecks and canopies\u003c\/li\u003e\n\u003cli\u003eAreas with complex architectural details\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose Monoprufe RTU 801?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eUltra-high elasticity:\u003c\/strong\u003e \u003e300% elongation effectively bridges cracks and accommodates structural movement\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eUV resistant:\u003c\/strong\u003e Maintains appearance and performance under prolonged sun exposure without a topcoat\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eLow VOC:\u003c\/strong\u003e Water-based formula at 21 g\/L VOC, safe for indoor and outdoor use\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eReady to use:\u003c\/strong\u003e Pre-blended, just stir lightly and apply\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMulti-substrate:\u003c\/strong\u003e Suitable for concrete, metal, asphalt, stone, and wood\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackaging \u0026amp; Consumption\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eItem\u003c\/th\u003e\u003cth\u003eSpecification\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003ePackaging\u003c\/td\u003e\u003ctd\u003e20 kg drum\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eColour\u003c\/td\u003e\u003ctd\u003eGrey and White (other colours available on request)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003e12 months from date of production\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eStorage\u003c\/td\u003e\u003ctd\u003eUnopened original sealed packaging, 5°C to 35°C, protect from sunlight and frost\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eConsumption Guide\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eApplication\u003c\/th\u003e\u003cth\u003eRate per Coat\u003c\/th\u003e\u003cth\u003eRecommended Coats\u003c\/th\u003e\u003cth\u003eTotal\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eRoof waterproofing\u003c\/td\u003e\u003ctd\u003e~1 kg\/m²\/coat\u003c\/td\u003e\u003ctd\u003e2-3 coats\u003c\/td\u003e\u003ctd\u003e~2 kg\/m²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWall waterproofing\u003c\/td\u003e\u003ctd\u003e~0.75 kg\/m²\/coat\u003c\/td\u003e\u003ctd\u003e2-3 coats\u003c\/td\u003e\u003ctd\u003e~1.5 kg\/m²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePrimer (porous substrates)\u003c\/td\u003e\u003ctd\u003e~0.3 kg\/m²\u003c\/td\u003e\u003ctd\u003e1 coat\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eActual consumption varies with surface porosity and texture.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003cth\u003eTest Standard\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eChemical Base\u003c\/td\u003e\u003ctd\u003ePolyurethane acrylic copolymer\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDensity\u003c\/td\u003e\u003ctd\u003e1.2 +\/- 0.1 kg\/L\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSolid Content\u003c\/td\u003e\u003ctd\u003e\u003e60% by weight\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength\u003c\/td\u003e\u003ctd\u003e\u003e2.5 MPa\u003c\/td\u003e\u003ctd\u003eASTM D412\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eElongation at Break\u003c\/td\u003e\u003ctd\u003e\u003e300%\u003c\/td\u003e\u003ctd\u003eASTM D412\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTear Strength\u003c\/td\u003e\u003ctd\u003e\u003e20 kN\/m\u003c\/td\u003e\u003ctd\u003eASTM D624\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVOC\u003c\/td\u003e\u003ctd\u003e21 g\/L\u003c\/td\u003e\u003ctd\u003eUSEPA Method 24\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAmbient Temperature\u003c\/td\u003e\u003ctd\u003e\u003e5°C\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSubstrate must be sound, dry, clean, free of oil and removable contaminants\u003c\/li\u003e\n\u003cli\u003eOpen-textured mortar or concrete should be primed with diluted Monoprufe RTU 801 (1 part product to 3 parts water) or Sikalastic-500 Acrylic Primer HK at ~0.3 kg\/m²\u003c\/li\u003e\n\u003cli\u003eNew concrete must cure for 28 days before application\u003c\/li\u003e\n\u003cli\u003eAfter rain, allow substrate to dry for 3 days before application\u003c\/li\u003e\n\u003cli\u003eUse fibre-reinforced detailing coat over open joints, corners, and stress points\u003c\/li\u003e\n\u003cli\u003eProduct is pre-blended; slight separation after storage is normal and can be corrected by gentle re-mixing\u003c\/li\u003e\n\u003cli\u003eClean tools with water immediately after use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eHow does Monoprufe RTU 801 compare to standard acrylic waterproofing paint?\u003c\/h3\u003e\n\u003cp\u003eMonoprufe RTU 801 is a polyurethane acrylic copolymer with \u003e300% elongation, far exceeding standard acrylic waterproofing paints (~100% elongation). This high elasticity effectively bridges cracks and accommodates structural movement. It is also UV stable without yellowing, making it ideal for exposed roofs and external walls.\u003c\/p\u003e\n\n\u003ch3\u003eIs a primer coat required?\u003c\/h3\u003e\n\u003cp\u003ePorous or open-textured concrete and mortar substrates should receive a primer coat (Monoprufe RTU 801 diluted 1:3 with water, or Sikalastic-500 Acrylic Primer HK) at approximately 0.3 kg\/m². Smooth or non-porous substrates can be coated directly.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the consumption rate per square metre?\u003c\/h3\u003e\n\u003cp\u003eFor roof waterproofing, approximately 2 kg\/m² (2 coats at 1 kg\/m² each). For wall waterproofing, approximately 1.5 kg\/m² (2 coats at 0.75 kg\/m² each). Actual consumption depends on substrate porosity and roughness.\u003c\/p\u003e","brand":"Sika Ronacrete 西卡永聯結","offers":[{"title":"灰 Grey","offer_id":43686162563222,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"白 White","offer_id":43686162595990,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Sika_Ronacrete_Monoprufe_RTU_801.png?v=1754555094"},{"product_id":"polybit-polythane-p-20l","title":"Polybit Polythane P","description":"\u003cp\u003ePolythane P is a liquid-applied waterproofing and protective coating designed for concrete structures. This hybrid polyurethane is modified with specially selected polymers to form a tough, flexible, and durable coating. It is completely free from coal tar and other hazardous ingredients, making it environmentally friendly with low VOC content.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Elastomeric and Tough\u003c\/strong\u003e: Forms a highly elastic, tough, and resilient membrane.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmentally Friendly\u003c\/strong\u003e: Low VOC, coal tar-free.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Component\u003c\/strong\u003e: Easy to apply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Tensile Strength and Elongation\u003c\/strong\u003e: Offers excellent tensile strength and elongation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Crack Bridging Properties\u003c\/strong\u003e: Effectively covers and repairs cracks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior UV Resistance, Weatherability, and Color Retention\u003c\/strong\u003e: Maintains performance stability under various weather conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Water and Vapor Resistance\u003c\/strong\u003e: Provides effective waterproofing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Resistance to Chlorides, Sulphates, Bacteria, Oil, and Common Fuels\u003c\/strong\u003e: Offers long-term protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTypical Usage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWaterproofing of Wet Areas\u003c\/strong\u003e: Ideal for bathrooms, toilets, public showers, and kitchens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoof and Terrace Waterproofing\u003c\/strong\u003e: Suitable for roofs, terraces, balconies, domes, aluminum sandwich panels, and corrugated sheets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtective and Decorative Coating on Concrete Surfaces\u003c\/strong\u003e: Suitable for both vertical and horizontal exposed concrete surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Polybit","offers":[{"title":"灰 Grey","offer_id":43686441615510,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"白 White","offer_id":43686441648278,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Polybit_POLYTHANE_P_20L.png?v=1754554390"},{"product_id":"hyperdesmo®-classic","title":"Alchimica HYPERDESMO - CLASSIC","description":"\u003cdiv class=\"ChatMessage_chatMessage__xkgHx\" data-complete=\"true\"\u003e\n\u003cdiv class=\"ChatMessage_messageRow__DHlnq\"\u003e\n\u003cdiv class=\"ChatMessage_messageWrapper__4Ugd6\"\u003e\n\u003cdiv class=\"Message_rowWithFooter__FShU6\"\u003e\n\u003cdiv class=\"Message_row__ug_UU\"\u003e\n\u003cdiv class=\"Message_botMessageBubble__aYctV\"\u003e\n\u003cdiv class=\"Markdown_markdownContainer__Tz3HQ\"\u003e\n\u003cp\u003eHYPERDESMO® (Classic) is the industry standard in waterproofing. For over 30 years, it has provided a simple solution for waterproofing and protection. It is a one-component, low-viscosity polyurethane liquid that cures with the humidity in the atmosphere to produce a highly elastic membrane with strong adhesion to many types of surfaces.\u003c\/p\u003e\n\u003cp\u003eIt is based on pure elastomeric hydrophobic polyurethane resin plus special inorganic fillers, which result in excellent mechanical, chemical, thermal, UV, and natural element resistance properties.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNo thinning required, but SOLVENT-01 can be used.\u003c\/li\u003e\n\u003cli\u003eExcellent weather and UV resistance. The white color reflects much solar energy, significantly reducing the internal temperature of buildings.\u003c\/li\u003e\n\u003cli\u003eExcellent thermal resistance, the product never turns soft. Max service temperature 90°C, max shock temperature 200°C.\u003c\/li\u003e\n\u003cli\u003eResistance in the cold: The film remains elastic even down to -40°C.\u003c\/li\u003e\n\u003cli\u003eExcellent mechanical properties.\u003c\/li\u003e\n\u003cli\u003eGood chemical resistance.\u003c\/li\u003e\n\u003cli\u003eNon-toxic after full cure.\u003c\/li\u003e\n\u003cli\u003eWater vapor transmission: The film breathes, so there is no accumulation of humidity under the coat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTypical Usage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWaterproofing and protection of gypsum and cement boards\u003c\/li\u003e\n\u003cli\u003eWaterproofing under tiles\u003c\/li\u003e\n\u003cli\u003eWaterproofing bathrooms\u003c\/li\u003e\n\u003cli\u003eWaterproofing roofs\u003c\/li\u003e\n\u003cli\u003eWaterproofing light roofing made of metal or fibrous cement\u003c\/li\u003e\n\u003cli\u003eWaterproofing asphalt membranes\u003c\/li\u003e\n\u003cli\u003eServing as the main waterproofing membrane in car park waterproofing systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Message_botOptimisticFooter__FL0c_\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!----\u003e","brand":"Alchimica","offers":[{"title":"Default Title","offer_id":43714716500118,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Alchimica_HYPERDESMO_-_CLASSIC.png?v=1754554353"},{"product_id":"hyperdesmo®-300","title":"Alchimica HYPERDESMO - 300","description":"\u003cp\u003eHYPERDESMO®-300 is a single-component, highly chemical-resistant polyurethane\/polyurea liquid membrane designed for demanding waterproofing applications. This product boasts excellent chemical and mechanical properties, as well as very high abrasion resistance, making it ideal for tough and demanding waterproofing tasks. HYPERDESMO®-300 displays crack-bridging properties over a wide range of extremely high or low temperatures. The product's thixotropic rheology allows for easy application on sloped and vertical substrates without sagging. It contains a very low amount of solvent, is non-flammable, and is classified as “non-IMO” or ADR during transportation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eExcellent crack-bridging properties.\u003c\/li\u003e\n\u003cli\u003eLow solvent content, non-flammable.\u003c\/li\u003e\n\u003cli\u003eSuperior chemical resistance. Can withstand petrochemicals, salts, and chlorine that commonly attack bridge decks or might be present in swimming pools and water tanks.\u003c\/li\u003e\n\u003cli\u003eThixotropic, can be applied on any complex structure, ensuring complete seamless and homogeneous coverage of uneven concrete surfaces usually encountered on bridge decks or vertical surfaces found in swimming pools and tanks.\u003c\/li\u003e\n\u003cli\u003eExcellent mechanical properties, high elasticity, tensile, and tear strength. Can withstand stresses from heavy asphalt application machinery.\u003c\/li\u003e\n\u003cli\u003eExceptional compatibility with asphalt overlays without needing an adhesion layer.\u003c\/li\u003e\n\u003cli\u003eHighly hydrophobic.\u003c\/li\u003e\n\u003cli\u003eCompatible with ALCHIMICA’s standard primers and topcoats.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTypical Usage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eWaterproofing of swimming pools (under tiles)\u003c\/li\u003e\n\u003cli\u003eWaterproofing of chemically treated tanks\u003c\/li\u003e\n\u003cli\u003eWaterproofing of high-traffic roofs\u003c\/li\u003e\n\u003cli\u003eWaterproofing of bridge decks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!----\u003e","brand":"Alchimica","offers":[{"title":"Default Title","offer_id":43714767093910,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/hyperdesmo_koyvas_4_4_1.png?v=1719569473"},{"product_id":"alchimica-universal-primer-2k-4060","title":"Alchimica UNIVERSAL PRIMER-2K-4060","description":"\u003cp\u003e\u003cstrong\u003eUniversal Primer 2K-4060\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a two-component, solvent-free polyurethane-based primer designed for use with the HYPERDESMO® System and other polyurethane products within the ALCHIMICA® lineup. It is fast curing (same-day primer) and non-toxic (zero V.O.C.), making it ideal for use in cold climates or low humidity conditions.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Curing\u003c\/strong\u003e: Same-day primer for easy application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolvent-Free\u003c\/strong\u003e: Suitable for use in enclosed spaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcellent Bitumen-Oil Barrier\u003c\/strong\u003e: Ideal primer for HYPERDESMO® products over bitumen membranes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Hydrophobic\u003c\/strong\u003e: Provides excellent waterproofing properties.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile\u003c\/strong\u003e: Can be used as a filler and adhesive for geotextiles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTypical Usage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBitumen and Asphaltic Membranes\u003c\/strong\u003e: Before applying any HYPERDESMO® range products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetals (including galvanized), Aluminum, Marble\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder Conditions of Insufficient Ventilation\u003c\/strong\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOther Non-Polyurethane Based Systems\u003c\/strong\u003e, such as acrylic paints.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"Message_botOptimisticFooter__FL0c_\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"ChatMessageActionBar_actionBar__gyeEs\"\u003e\u003c\/section\u003e\n\u003c!----\u003e","brand":"Alchimica","offers":[{"title":"Default Title","offer_id":43714821619862,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Alchimica_UNIVERSAL_PRIMER-2K-4060.jpg?v=1767424907"},{"product_id":"daviaproof-340","title":"Daviaproof 340 Black","description":"\u003cp\u003eDaviaproof 340 Black - professional construction and waterproofing material available from Wah Hing Waterproofing in Hong Kong.\u003c\/p\u003e","brand":"Daivaproof","offers":[{"title":"Default Title","offer_id":43759185952918,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/daviaproof340.jpg?v=1719569466"},{"product_id":"daviaproof-360","title":"Daviaproof 360 Grey","description":"\u003cdiv style=\"background:#f0f4f8;border-left:4px solid #a02c2c;padding:16px;margin-bottom:24px;\"\u003e\n\u003cstrong\u003eSummary:\u003c\/strong\u003e\n\u003cp\u003eDaivaproof 360 is a Korean-made single-component polyurethane (PU) colour waterproofing membrane. Moisture-curing, it forms a seamless elastic waterproof layer. Grey topcoat design (also available in green and red), 560% elongation, 3 MPa tensile strength, Shore A 60 hardness. Suitable for exposed rooftops, exterior walls, terraces and pedestrian areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSingle-component system\u003c\/strong\u003e — no on-site mixing required\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePolyurethane (PU) formula\u003c\/strong\u003e — moisture-curing, seamless elastic membrane\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh elasticity\u003c\/strong\u003e — 560% elongation (ASTM D412)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh strength\u003c\/strong\u003e — 3 MPa tensile, 4.78 N\/mm tear strength\u003c\/li\u003e\n\u003cli\u003eExcellent adhesion to concrete, metal, asphalt and other substrates\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eColour topcoat\u003c\/strong\u003e — standard grey, also green and red, for exposed aesthetic use\u003c\/li\u003e\n\u003cli\u003eChemical, abrasion and impact resistant\u003c\/li\u003e\n\u003cli\u003eFire tested (BS EN ISO 11925-2) and watertight (BS EN 1928)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eExposed rooftop waterproofing (topcoat)\u003c\/li\u003e\n\u003cli\u003eExterior wall waterproofing\u003c\/li\u003e\n\u003cli\u003eTwo-course concrete: roof terraces, pedestrian areas, car parks\u003c\/li\u003e\n\u003cli\u003eSingle-course: tunnels, foundation walls\u003c\/li\u003e\n\u003cli\u003eBasements, bathrooms, tanks\u003c\/li\u003e\n\u003cli\u003eTerraces and balconies requiring aesthetic finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003cth\u003eStandard\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eViscosity\u003c\/td\u003e\u003ctd\u003e6000 cps (25°C)\u003c\/td\u003e\u003ctd\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength\u003c\/td\u003e\u003ctd\u003eX: 3 MPa \/ Y: 2.8 MPa\u003c\/td\u003e\u003ctd\u003eASTM D638:2010\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTear Strength\u003c\/td\u003e\u003ctd\u003e4.78 N\/mm\u003c\/td\u003e\u003ctd\u003eASTM D624-2000\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eElongation\u003c\/td\u003e\u003ctd\u003e560%\u003c\/td\u003e\u003ctd\u003eASTM D412-2006\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWater Absorption\u003c\/td\u003e\u003ctd\u003e1.1%\u003c\/td\u003e\u003ctd\u003eASTM D570-98\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eHardness\u003c\/td\u003e\u003ctd\u003eShore A 60\u003c\/td\u003e\u003ctd\u003eASTM D2240\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWatertightness\u003c\/td\u003e\u003ctd\u003eNo visible damage\u003c\/td\u003e\u003ctd\u003eBS EN 1928:2000\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFire Reaction\u003c\/td\u003e\u003ctd\u003ePass\u003c\/td\u003e\u003ctd\u003eBS EN ISO 11925-2:2010\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication Method\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSurface preparation\u003c\/strong\u003e — concrete must be smooth, dry, free of oil and dust. Cracks under 1.6mm pre-treated with Daivaproof 360; over 1.6mm routed and sealed\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePrimer\u003c\/strong\u003e — metal and asphalt surfaces require T44 or KW 901 primer\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e — by trowel, squeegee or roller, minimum 1.5mm wet film\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCoverage\u003c\/strong\u003e — 1.3 kg\/m² at 1.5mm wet film\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCuring\u003c\/strong\u003e — minimum 24 hours at 25°C\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFlood test\u003c\/strong\u003e — minimum 25mm water for 48 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDaivaproof 360 vs 340\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eItem\u003c\/th\u003e\u003cth\u003e360 (Grey)\u003c\/th\u003e\u003cth\u003e340 (Black)\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eColour\u003c\/td\u003e\u003ctd\u003eGrey (also green\/red)\u003c\/td\u003e\u003ctd\u003eBlack\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eType\u003c\/td\u003e\u003ctd\u003eTopcoat (exposed)\u003c\/td\u003e\u003ctd\u003eBase coat\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eUse\u003c\/td\u003e\u003ctd\u003eAesthetic exposed rooftop\u003c\/td\u003e\u003ctd\u003eUnder protection layer\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCombined use\u003c\/td\u003e\u003ctd colspan=\"2\"\u003eBase: 340 + Top: 360\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePackaging \u0026amp; Storage\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePackaging: 18 kg \/ pail\u003c\/li\u003e\n\u003cli\u003eStorage: below 25°C\u003c\/li\u003e\n\u003cli\u003eShelf life: 6 months (unopened)\u003c\/li\u003e\n\u003cli\u003eMin. application temperature: 5°C\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eStandard\u003c\/h3\u003e\n\u003cp\u003eASTM C 836-81\u003c\/p\u003e","brand":"Daivaproof","offers":[{"title":"Default Title","offer_id":43759186346134,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Daivaproof360.jpg?v=1719569463"},{"product_id":"alchimica-hyperdesmo®-s-wr","title":"Alchimica Hyperdesmo® S-WR Low VOC Polyurethane Waterproofing Membrane","description":"\u003cdiv class=\"tldr-box\" style=\"background:#f0f4f8;border-left:4px solid #2c5282;padding:16px;margin-bottom:24px\"\u003e\n\u003cstrong\u003eSummary:\u003c\/strong\u003e\n\u003cp\u003eHyperdesmo® S-WR is a low VOC single-component polyurethane (PU) liquid waterproofing membrane by Alchimica. Low solvent formula (VOC only 73 g\/L), non-hazardous for transport (non-IMO). Can be applied by brush, roller or airless spray. Cures to form a highly elastic hydrophobic film with over 1000% elongation, service temperature range -40°C to 80°C. Suitable for foundation walls, roofs (under protective layer), terraces and balconies.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eProduct Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLow VOC formula (73 g\/L), non-hazardous goods (non-IMO), easier transport and storage\u003c\/li\u003e\n\u003cli\u003eSingle-component, moisture-curing — ready to use from the can\u003c\/li\u003e\n\u003cli\u003eHigh elasticity — elongation over 1000%, accommodates substrate movement\u003c\/li\u003e\n\u003cli\u003eHigh solid content, thick film formation, low consumption (minimum 1.5 kg\/m²)\u003c\/li\u003e\n\u003cli\u003eCan be applied on vertical surfaces — excellent thixotropy, no sagging\u003c\/li\u003e\n\u003cli\u003eLow temperature resistance to -40°C, membrane remains flexible\u003c\/li\u003e\n\u003cli\u003eNon-toxic when cured\u003c\/li\u003e\n\u003cli\u003eGood vapour permeability — no moisture build-up under the coating\u003c\/li\u003e\n\u003cli\u003eBonds to various substrates without primer (concrete, fibre cement, mosaic, metal, etc.)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eFoundation wall waterproofing\u003c\/li\u003e\n\u003cli\u003eRoof waterproofing (under protective layer or tile finish)\u003c\/li\u003e\n\u003cli\u003eTerrace and balcony waterproofing (with protective covering)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eLimitations\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNot recommended for UV-exposed applications (must be under protective layer)\u003c\/li\u003e\n\u003cli\u003eNot recommended for thermo-insulating materials\u003c\/li\u003e\n\u003cli\u003eNot suitable for unsound substrates\u003c\/li\u003e\n\u003cli\u003eNot suitable for swimming pool surfaces or chemically treated water contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Data (Liquid Form — Before Application)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003cth\u003eTest Standard\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eVOC Content\u003c\/td\u003e\u003ctd\u003e73 g\/L\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConsumption\u003c\/td\u003e\u003ctd\u003eMinimum 1.5 kg\/m² (one to two coats)\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eViscosity\u003c\/td\u003e\u003ctd\u003e3000-6000 cP (25°C)\u003c\/td\u003e\u003ctd\u003eASTM D2196-86\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSpecific Gravity\u003c\/td\u003e\u003ctd\u003e1.5-1.6 gr\/cm³\u003c\/td\u003e\u003ctd\u003eASTM D1475 \/ ISO 2811\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Data (Cured Form)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003cth\u003eTest Standard\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eService Temperature\u003c\/td\u003e\u003ctd\u003e-40°C to 80°C\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eHardness\u003c\/td\u003e\u003ctd\u003eShore A 60\u003c\/td\u003e\u003ctd\u003eASTM D2240 \/ ISO R868\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength\u003c\/td\u003e\u003ctd\u003e30 kg\/cm² (3.0 N\/mm²)\u003c\/td\u003e\u003ctd\u003eASTM D412 \/ EN ISO 527-3\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eElongation\u003c\/td\u003e\u003ctd\u003e\u003e 1000%\u003c\/td\u003e\u003ctd\u003eASTM D412 \/ EN ISO 527-3\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWater Vapour Transmission\u003c\/td\u003e\u003ctd\u003e0.8 gr\/m².hr\u003c\/td\u003e\u003ctd\u003eASTM E96\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCE Certified Performance (EN 1504-2 Surface Protection — Coating)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eCO₂ Permeability\u003c\/td\u003e\u003ctd\u003eSD \u003e 50 m\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWater Vapour Permeability\u003c\/td\u003e\u003ctd\u003eSD \u003c 5 m (Class I, permeable)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCapillary Absorption\u003c\/td\u003e\u003ctd\u003eW \u003c 0.1 kg\/m².0.5h\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAdhesion Strength (Pull-off)\u003c\/td\u003e\u003ctd\u003e≥ 1.5 (1.0) N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAdhesion After Thermal Compatibility\u003c\/td\u003e\u003ctd\u003e≥ 1.5 (1.0) N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eReaction to Fire\u003c\/td\u003e\u003ctd\u003eEuroclass F\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eArtificial Weathering (EN 1062-11)\u003c\/td\u003e\u003ctd\u003eNo change (no blistering, cracking, flaking or colour change)\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplication Method\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSurface preparation: high-pressure water cleaning, remove oil, wax, loose material, mould release agents, and cured membranes\u003c\/li\u003e\n\u003cli\u003eFill surface irregularities with polyurethane sealant or cement sand mortar\u003c\/li\u003e\n\u003cli\u003eMixing: low-speed mixer (300 rpm). For spray application, add 5-10% SOLVENT-01\u003c\/li\u003e\n\u003cli\u003eApplication: roller, brush or airless spray (200-250 bar), minimum two coats\u003c\/li\u003e\n\u003cli\u003eRecoat interval not exceeding 48 hours\u003c\/li\u003e\n\u003cli\u003eCleaning: wipe tools with paper first, then clean with SOLVENT-01. Rollers are not reusable\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSubstrate Conditions (Concrete, No Primer Needed)\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHardness: R₂₈ = 15 MPa\u003c\/li\u003e\n\u003cli\u003eMoisture content: W \u003c 10%\u003c\/li\u003e\n\u003cli\u003eRelative humidity: \u003c 90%\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackaging\u003c\/h2\u003e\n\u003cp\u003e4 kg, 22 kg and 200 kg drums\u003c\/p\u003e\n\n\u003ch2\u003eShelf Life\u003c\/h2\u003e\n\u003cp\u003eMinimum 12 months in unopened original container stored in dry conditions at 5-25°C. Use promptly after opening.\u003c\/p\u003e","brand":"Alchimica","offers":[{"title":"Default Title","offer_id":43759196569750,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/hyperdesmo-s-wr.jpg?v=1719569461"},{"product_id":"pfc-801-彈性防水膜","title":"PFC 801 Single-Component Acrylic Elastic Waterproofing Membrane","description":"\u003cdiv style=\"background:#f0f4f8;border-left:4px solid #a02c2c;padding:16px;margin-bottom:24px;\"\u003e\n\u003cstrong\u003eSummary:\u003c\/strong\u003e\n\u003cp\u003ePFC-801 is a single-component water-based acrylic elastic waterproofing coating. Eco-friendly, non-toxic and odourless with UV resistance. Cures to form a highly elastic, seamless and weather-resistant waterproofing membrane with 500–600% elongation. Suitable for new and existing buildings, rooftops, terraces, exterior walls and balconies.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eProduct Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWater-based eco-friendly formula, non-toxic and odourless\u003c\/li\u003e\n\u003cli\u003eUV resistant — no chalking under long-term exposure\u003c\/li\u003e\n\u003cli\u003eHigh elasticity — 500–600% elongation, accommodates substrate movement\u003c\/li\u003e\n\u003cli\u003eSeamless film formation with strong adhesion (2.3 N\/mm²)\u003c\/li\u003e\n\u003cli\u003eEasy application — brush or scraper\u003c\/li\u003e\n\u003cli\u003eGood breathability — water vapour permeability 0.692 g\/h·m²\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNew and existing building surfaces\u003c\/li\u003e\n\u003cli\u003eRooftops and flat roofs\u003c\/li\u003e\n\u003cli\u003eTerraces and platforms\u003c\/li\u003e\n\u003cli\u003eExterior walls\u003c\/li\u003e\n\u003cli\u003eBalconies\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eColour\u003c\/td\u003e\u003ctd\u003eGrey \/ White\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSolid Content\u003c\/td\u003e\u003ctd\u003e70%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eElongation (ASTM D412)\u003c\/td\u003e\u003ctd\u003e500–600%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength (ASTM D412)\u003c\/td\u003e\u003ctd\u003e13 N\/mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e100% Modulus (ASTM D412)\u003c\/td\u003e\u003ctd\u003e50 Psi\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e350% Recovery (ASTM D412)\u003c\/td\u003e\u003ctd\u003e71%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWater Vapour Permeability (ASTM E96)\u003c\/td\u003e\u003ctd\u003e0.692 g\/h·m² (23°C, 50% RH)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAdhesion (ASTM C836)\u003c\/td\u003e\u003ctd\u003e2.3 N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSurface Dry Time\u003c\/td\u003e\u003ctd\u003e10 hours\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCure Time\u003c\/td\u003e\u003ctd\u003e24 hours\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eApplication Method\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\u003cstrong\u003eSurface Preparation\u003c\/strong\u003e — Surface must be level, solid, clean, free of standing water and leaks. Cracks must be repaired and levelled. Internal corners should be rounded\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eCoating\u003c\/strong\u003e — Apply by roller or scraper in successive coats. Allow each coat to fully dry before applying the next\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAnti-slip\u003c\/strong\u003e — Sprinkle fine sand on the top coat if anti-slip is required\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eReinforcement\u003c\/strong\u003e — Fibre mesh can be embedded between coats for added strength\u003c\/li\u003e\n\u003c\/ol\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDo not apply below 5°C or in rainy conditions\u003c\/li\u003e\n\u003cli\u003eSeal container tightly after use\u003c\/li\u003e\n\u003cli\u003eAfter 2 days curing, perform a ponding test — 48 hours with no leakage indicates pass\u003c\/li\u003e\n\u003cli\u003eStore at 10°C–25°C indoors, away from direct sunlight\u003c\/li\u003e\n\u003cli\u003eShelf life: 12 months\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PFC 百分百","offers":[{"title":"Grey 灰 \/ 1 L","offer_id":43759223013526,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"Grey 灰 \/ 4 L","offer_id":43759223046294,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"Grey 灰 \/ 18 L","offer_id":43759223079062,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"White 白 \/ 1 L","offer_id":43759223111830,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"White 白 \/ 4 L","offer_id":43759223144598,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"White 白 \/ 18 L","offer_id":43759223177366,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/PFC_801.png?v=1754567055"},{"product_id":"sika-西卡","title":"Sika Sikalastic 680","description":"\u003chr\u003e\n\u003ch2\u003eSikalastic 680 — Single Component Polyurethane Waterproofing Membrane\u003c\/h2\u003e\n\u003cp\u003eSikalastic®-680 is a single-component, highly elastic polyurethane liquid-applied waterproofing membrane for concrete structures. It forms a continuous, seamless waterproof layer and must be covered by protective toppings (screed, tiles, or ballast). Commonly known in Hong Kong as \"rooftop waterproofing black glue\" (天台防水黑膠).\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle component — ready to use, no mixing required\u003c\/li\u003e\n\u003cli\u003eHigh elasticity — elongation at break \u003e 500%\u003c\/li\u003e\n\u003cli\u003eQuick drying — tack free in approximately 4 hours (25°C \/ 75% RH)\u003c\/li\u003e\n\u003cli\u003eExcellent adhesion to concrete, render, and masonry (\u003e 1 MPa)\u003c\/li\u003e\n\u003cli\u003eGood impact and abrasion resistance\u003c\/li\u003e\n\u003cli\u003eLow odour, non-toxic\u003c\/li\u003e\n\u003cli\u003eLow temperature flexibility\u003c\/li\u003e\n\u003cli\u003eMultiple application methods: brush, roller, trowel, squeegee, or airless spray\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoofs, podiums, balconies (covered by protective toppings)\u003c\/li\u003e\n\u003cli\u003eBathrooms, pools, tanks, green roofs, and planters\u003c\/li\u003e\n\u003cli\u003eExternal walls, basements, and foundations\u003c\/li\u003e\n\u003cli\u003eAs water barrier under plasters, screeds, or tiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Sikalastic®-680 is designed for non-exposed use. A protective covering layer must be applied over the finished membrane.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eChemical Base\u003c\/td\u003e\u003ctd\u003ePolyurethane\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eComponents\u003c\/td\u003e\u003ctd\u003eSingle component, ready to use\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eColour\u003c\/td\u003e\u003ctd\u003eBlack, grey\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDensity\u003c\/td\u003e\u003ctd\u003e~1.5 kg\/L (± 0.05)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShore A Hardness\u003c\/td\u003e\u003ctd\u003e60 (± 5)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength\u003c\/td\u003e\u003ctd\u003e~2 MPa\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eElongation at Break\u003c\/td\u003e\u003ctd\u003e\u003e 500%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Adhesion Strength\u003c\/td\u003e\u003ctd\u003e\u003e 1 MPa\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTear Strength\u003c\/td\u003e\u003ctd\u003e~15 N\/mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eYield (Standard)\u003c\/td\u003e\u003ctd\u003e~2.0 kg\/m² (~1.3 mm wet film), one or more coats\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eYield (Reinforced)\u003c\/td\u003e\u003ctd\u003e~2.5 kg\/m² (~1.6–1.7 mm wet film), with Sika® Glass Fabric\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTack Free Time\u003c\/td\u003e\u003ctd\u003e~4 hours (25°C, 75% RH)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAmbient Temperature\u003c\/td\u003e\u003ctd\u003e+5°C to +40°C\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eVOC Content\u003c\/td\u003e\u003ctd\u003e≤ 250 gm\/L (HK Air Pollution Control — Roof coatings, non-exposed)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePackaging\u003c\/td\u003e\u003ctd\u003e20 kg pail\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003e9 months from date of production\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eStorage\u003c\/td\u003e\u003ctd\u003eUnopened, cool and dry, away from sunlight and frost\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eProduct Comparison\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eExposed Use\u003c\/th\u003e\n\u003cth\u003eElasticity\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSikalastic 680\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolyurethane\u003c\/td\u003e\n\u003ctd\u003eMust be covered\u003c\/td\u003e\n\u003ctd\u003eHigh (\u003e 500%)\u003c\/td\u003e\n\u003ctd\u003eRoofs \/ basements \/ pools — under tiles or screed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSikaFill C\u003c\/td\u003e\n\u003ctd\u003eAcrylic\u003c\/td\u003e\n\u003ctd\u003eCan be exposed\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003eVillage rooftops \/ walls — economical choice\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitoproof 600PF\u003c\/td\u003e\n\u003ctd\u003ePolyurethane\u003c\/td\u003e\n\u003ctd\u003eMust be covered\u003c\/td\u003e\n\u003ctd\u003eHigh\u003c\/td\u003e\n\u003ctd\u003eLarge projects — requires protective screed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHyperdesmo Classic\u003c\/td\u003e\n\u003ctd\u003ePolyurethane\u003c\/td\u003e\n\u003ctd\u003eCan be exposed\u003c\/td\u003e\n\u003ctd\u003eVery high\u003c\/td\u003e\n\u003ctd\u003ePremium projects — 30-year brand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch3\u003eCan Sikalastic 680 be left exposed?\u003c\/h3\u003e\n\u003cp\u003eNo. According to the product data sheet, Sikalastic®-680 is designed for non-exposed applications and must be covered by a protective layer such as screed, tiles, or ballast. For exposed waterproofing solutions, consider SikaFill C (acrylic) or Hyperdesmo Classic (exposed-grade polyurethane).\u003c\/p\u003e\n\u003ch3\u003eHow long before a flood test can be carried out?\u003c\/h3\u003e\n\u003cp\u003eAllow at least 3 days of drying at 25°C and 75% relative humidity before flood testing. In cooler or more humid conditions, drying time will be longer and the waiting period should be extended accordingly.\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":45242553270422,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Sika_Sikalastic_680_Flexible_Waterproofing_Membrane_High_Performance_Polyurethane_Coating.png?v=1760462857"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/collections\/25cc1b8a27f234636a2a3cf7357ab3c0.png?v=1776663395","url":"https:\/\/wahhingwp.com\/en\/collections\/%e5%a4%a9%e5%8f%b0%e9%98%b2%e6%b0%b4.oembed","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}