{"product_id":"馬貝-mapei-primer-g","title":"Mapei Primer G","description":"\u003cdiv class=\"tldr-box\" style=\"background:#f0f4f8;border-left:4px solid #2c5282;padding:16px;margin-bottom:24px\"\u003e\u003cstrong\u003eSummary:\u003c\/strong\u003e\u003cp\u003ePrimer G is a synthetic resin water-dispersion primer by Mapei for treating gypsum and cementitious substrates. It consolidates surfaces, evens out absorption rates, and improves the bond of subsequent materials, with very low VOC content (per manufacturer data).\u003c\/p\u003e\u003c\/div\u003e\u003ch3\u003eProduct Overview\u003c\/h3\u003e\u003cp\u003ePrimer G is a light blue liquid primer based on synthetic resin in water dispersion. Once dry, it forms a flexible, compact, shiny film on the substrate surface that effectively consolidates loose surfaces while improving the adhesion of levelling compounds, paint, wallpaper adhesives, tile adhesives, and render mortars. The product is non-flammable and can be safely used in enclosed or poorly ventilated environments.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e\u003cstrong\u003eEnhanced Adhesion\u003c\/strong\u003e: Significantly improves the bond of levelling compounds, tile adhesives, paint, and wallpaper adhesives on various substrates\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003ePrevents Chemical Reactions\u003c\/strong\u003e: Creates an isolation layer between gypsum and cementitious substrates, preventing sulphate-aluminate reactions that produce ettringite and cause interface separation\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eEvens Out Absorption\u003c\/strong\u003e: Reduces and standardises substrate water absorption rates, ensuring uniform curing of subsequent materials\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eReduces Air Bubbles\u003c\/strong\u003e: When used as a primer before self-levelling compounds, effectively reduces bubble formation and prevents over-rapid drying\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eNon-Flammable\u003c\/strong\u003e: Safe for use in enclosed environments without special ventilation measures\u003c\/li\u003e\u003cli\u003e\u003cstrong\u003eVery Low VOC\u003c\/strong\u003e: EMICODE EC1 Plus very low emission certified (per manufacturer data)\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePrimer treatment on gypsum surfaces before installing ceramic tiles with cementitious adhesives\u003c\/li\u003e\u003cli\u003eAnchoring coat before gypsum spray plasters\u003c\/li\u003e\u003cli\u003ePrimer treatment on cementitious substrates before applying self-levelling or thixotropic levelling compounds\u003c\/li\u003e\u003cli\u003ePrimer treatment on gypsum surfaces before applying cement-based products\u003c\/li\u003e\u003cli\u003ePrimer treatment on anhydrite screeds before applying cement-based products\u003c\/li\u003e\u003cli\u003ePrimer treatment on cementitious renders before applying gypsum-based products\u003c\/li\u003e\u003cli\u003eInter-coat primer between smoothing compound layers\u003c\/li\u003e\u003cli\u003ePrimer treatment on gypsum walls before wallpapering\u003c\/li\u003e\u003cli\u003eSurface treatment on gypsum walls, chipboard, cement fibre board, foamed concrete, and similar substrates before painting or wallpapering\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003ePackaging\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e1 kg bottle\u003c\/li\u003e\u003cli\u003e5 kg drum\u003c\/li\u003e\u003cli\u003e10 kg drum\u003c\/li\u003e\u003cli\u003e25 kg drum\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eImportant Notes\u003c\/h3\u003e\u003cul\u003e\u003cli\u003ePrimer G is not a waterproofing product — while it significantly reduces porosity and absorption, it does not provide waterproofing\u003c\/li\u003e\u003cli\u003eNot suitable for magnesium board substrates\u003c\/li\u003e\u003cli\u003eNot recommended for exterior applications or where rising damp is present\u003c\/li\u003e\u003cli\u003eAvoid over-application that forms a surface film; dilute with water as appropriate for substrate absorption\u003c\/li\u003e\u003cli\u003eSubstrates must be clean, dry, and free from oil and loose parts\u003c\/li\u003e\u003cli\u003eFor detailed application methods, coverage rates, and technical parameters, please refer to the official product data sheet\u003c\/li\u003e\u003c\/ul\u003e","brand":"Mapei 馬貝","offers":[{"title":"5KG","offer_id":43686437027990,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"10KG","offer_id":43686437060758,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true},{"title":"25KG","offer_id":43686437093526,"sku":"","price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/4_532-primer-g_68437744c43c4dfab1e4b059c914cb30.png?v=1719569602","url":"https:\/\/wahhingwp.com\/en\/products\/%e9%a6%ac%e8%b2%9d-mapei-primer-g","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}