{"product_id":"sika-西卡-sikaplan-wp-1120-20hl-片材防水膜","title":"Sika Sikaplan WP 1120-20HL","description":"\u003chr\u003e\n\u003ch2\u003eSikaplan® WP 1120-20 HL — PVC Waterproofing Membrane for Underground Structures\u003c\/h2\u003e\n\u003cp\u003eSikaplan® WP 1120-20 HL is a homogeneous PVC-P (polyvinylchloride) sheet waterproofing membrane with a yellow signal layer, designed for waterproofing tunnels, basements, shafts, and all kinds of below-ground structures against groundwater. The 2.0 mm thick membrane is installed by loose laying, mechanical fastening, or ballasting, with all overlaps heat welded. Installation must be carried out by Sika-trained contractors.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVirgin PVC-P material — consistent quality homogeneous sheet\u003c\/li\u003e\n\u003cli\u003eYellow signal layer to indicate membrane damage during inspection\u003c\/li\u003e\n\u003cli\u003eHigh tensile strength: MD 17.0 \/ CMD 16.0 N\/mm² (EN 12311-2)\u003c\/li\u003e\n\u003cli\u003eHigh elongation: ≥ 300% in both directions\u003c\/li\u003e\n\u003cli\u003eTear strength ≥ 500 N (nail shank, EN 12310-1)\u003c\/li\u003e\n\u003cli\u003eFoldable at low temperatures down to -25 °C\u003c\/li\u003e\n\u003cli\u003eResistant to natural aggressive mediums in ground water and soil\u003c\/li\u003e\n\u003cli\u003eHigh mechanical impact resistance ≥ 750 mm (EN 12691)\u003c\/li\u003e\n\u003cli\u003eDimensional stability ≤ 2% change after heat (EN 1107-2)\u003c\/li\u003e\n\u003cli\u003eCan be installed on damp and weak substrates\u003c\/li\u003e\n\u003cli\u003eEco-Product Directory listed (Application No: PL-00975-2021)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTunnel waterproofing (including cut and cover tunnels)\u003c\/li\u003e\n\u003cli\u003eBasement and below-ground structure waterproofing\u003c\/li\u003e\n\u003cli\u003eShaft waterproofing\u003c\/li\u003e\n\u003cli\u003eProtection against groundwater ingress\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\" style=\"border-collapse:collapse;width:100%;margin-bottom:16px\"\u003e\n\u003cthead\u003e\u003ctr style=\"background:#f0f0f0\"\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\u003eMaterial Base\u003c\/td\u003e\u003ctd\u003ePVC-P (homogeneous sheet)\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eOverall Thickness\u003c\/td\u003e\u003ctd\u003e2.0 mm (-5\/+10%)\u003c\/td\u003e\u003ctd\u003eEN 1849-2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMass per Unit Area\u003c\/td\u003e\u003ctd\u003e~2.600 kg\/m² (-5\/+10%)\u003c\/td\u003e\u003ctd\u003eEN 1849-2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRoll Dimensions\u003c\/td\u003e\u003ctd\u003e2.0 m (W) × 15.0 m (L)\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eRoll Weight\u003c\/td\u003e\u003ctd\u003e~78 kg\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength (MD \/ CMD)\u003c\/td\u003e\u003ctd\u003e17.0 (±2.0) \/ 16.0 (±2.0) N\/mm²\u003c\/td\u003e\u003ctd\u003eEN 12311-2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eElongation (MD \/ CMD)\u003c\/td\u003e\u003ctd\u003e≥ 300% \/ ≥ 300%\u003c\/td\u003e\u003ctd\u003eEN 12311-2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTear Strength (Nail Shank)\u003c\/td\u003e\u003ctd\u003e≥ 500 N\u003c\/td\u003e\u003ctd\u003eEN 12310-1\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eImpact Resistance\u003c\/td\u003e\u003ctd\u003e≥ 750 mm\u003c\/td\u003e\u003ctd\u003eEN 12691\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eStatic Load Resistance\u003c\/td\u003e\u003ctd\u003e≥ 20 kg\u003c\/td\u003e\u003ctd\u003eEN 12730 Method B\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFoldability at Low Temperature\u003c\/td\u003e\u003ctd\u003e-25 °C\u003c\/td\u003e\u003ctd\u003eEN 495-5\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWater Tightness\u003c\/td\u003e\u003ctd\u003ePass\u003c\/td\u003e\u003ctd\u003eEN 1928 B\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDimensional Change After Heat\u003c\/td\u003e\u003ctd\u003e≤ 2%\u003c\/td\u003e\u003ctd\u003eEN 1107-2\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eReaction to Fire\u003c\/td\u003e\u003ctd\u003eClass E\u003c\/td\u003e\u003ctd\u003eEN 13501-1\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eExposure to Bitumen\u003c\/td\u003e\u003ctd\u003eNo performance determined\u003c\/td\u003e\u003ctd\u003eEN 1548\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eApplication Temperature\u003c\/td\u003e\u003ctd\u003e+5 °C to +35 °C\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003e5 years (unopened, original packaging)\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eLimitations\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInstallation by Sika-trained contractors only\u003c\/li\u003e\n\u003cli\u003eNot UV stabilized — cannot be permanently exposed to sunlight\u003c\/li\u003e\n\u003cli\u003eNot resistant to permanent contact with bitumen or non-PVC plastics; separation layer (PP geotextile ≥ 150 g\/m²) required\u003c\/li\u003e\n\u003cli\u003eSpecial precautions required below +5 °C or above 80% RH\u003c\/li\u003e\n\u003cli\u003eEnsure adequate ventilation when heat welding in enclosed spaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003ch4\u003eCan Sikaplan WP 1120-20HL be used for rooftop or exterior waterproofing?\u003c\/h4\u003e\n\u003cp\u003eNo. This product is designed exclusively for underground structures (tunnels, basements, shafts). It is not UV stabilized and cannot be permanently exposed to sunlight. Use other Sika waterproofing products for exposed applications.\u003c\/p\u003e\n\n\u003ch4\u003eHow are the membrane sheets joined?\u003c\/h4\u003e\n\u003cp\u003eAll overlaps must be heat welded using hand welding guns (e.g., Leister Triac PID) or automatic machines (e.g., Leister Twinny S \/ Triac Drive). Welding parameters must be established through on-site trials before production welding. T-joints require special preparation with chamfered overlaps.\u003c\/p\u003e\n\n\u003ch4\u003eCan it be installed on a damp substrate?\u003c\/h4\u003e\n\u003cp\u003eYes. Sikaplan WP 1120-20HL can be installed on damp substrates, which is one of its key advantages. Installation methods include loose laying, mechanical fastening, or ballasting as appropriate.\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":46352839770262,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/Sika_NoClaim_pos_rgb_30_4719d6a8-02e9-4f35-b76d-d37b8983ad65.png?v=1776682061","url":"https:\/\/wahhingwp.com\/en\/products\/sika-%e8%a5%bf%e5%8d%a1-sikaplan-wp-1120-20hl-%e7%89%87%e6%9d%90%e9%98%b2%e6%b0%b4%e8%86%9c","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}