{"product_id":"sbr-bonding-agent-waterproof-admixture-4-in-1-concrete-sealer-plaster-primer-mortar-additive-for-external-render-floor-screed-damp-proofing-crack-prevention","title":"SBR Bonding Agent \u0026 Waterproof Admixture - 4-in-1 Concrete Sealer, Plaster Primer \u0026 Mortar Additive for External Render, Floor Screed, Damp Proofing \u0026 Crack Prevention","description":"\u003cul class=\"a-unordered-list a-vertical a-spacing-mini\"\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e100% WATERPROOF \u0026amp; DAMP-PROOF: Unlike PVA which breaks down when wet, SBR is completely water-resistant once cured. Perfect for high-humidity areas, external walls, wet rooms, and surfaces subject to continuous water contact.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003e4-IN-1 MULTI-PURPOSE FORMULA: A highly versatile polymer that functions as a high-strength bonding slurry, structural admixture, substrate sealer, and primer. One bottle covers multiple stages of your project.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003eMAXIMUM ADHESION \u0026amp; WORKABILITY: Dramatically improves the \"grab\" and wet adhesion of mortar, making vertical and overhead applications incredibly easy. Provides a smooth, creamy texture with extended working time for a flawless finish.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003eANTI-CRACK \u0026amp; ANTI-SHRINK: Enhances the flexibility and elasticity of cement mixes. By accommodating thermal expansion and minor structural movement, it actively prevents drying shrinkage, cracking, and surface dusting.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"a-spacing-mini\"\u003e\u003cspan class=\"a-list-item\"\u003eHEAVY-DUTY WEAR RESISTANCE: Reinforces concrete, floor screeds, renders, and patching mortars. Significantly boosts structural durability, tensile strength, and resistance to abrasion and mild chemicals in high-traffic areas.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"a-list-item\"\u003e\u003cspan class=\"a-text-bold\"\u003eSBR Bonding Agent \u0026amp; Admixture\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003cbr\u003eAn interior\/exterior bonding and waterproofing aid, sealer, and primer. Designed to improve water, chemical, and abrasion resistance, as well as flexibility, plasticity, and durability. Ideal for strengthening renders, floor screeds, concrete, and patching mortars. Unlike PVA, SBR is suitable for use in areas subject to dampness, high humidity, and continuous water contact.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eKey Benefits\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eEnhanced Durability: Improves water, chemical, and abrasion resistance. Better Workability: Improves flexibility, plasticity, and wet adhesion while reducing shrinkage, cracking, and surface dusting. Moisture Resistant: Perfect for environments subject to high humidity, dampness, and continuous water contact.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eApplication \u0026amp; Mixing Guide\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eBonding Slurry (for screeds, toppings, renders, and coatings) Mix 1–2 parts by volume of fresh cement with 1 part by volume of SBR. Apply evenly to the surface, and apply the screed, topping, render, or coating while the slurry is still wet or tacky.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eAdditive for Render\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003ePrime the surface first. Use 5–7 liters of SBR, 75kg of sharp washed sand, and 25kg of cement. Apply the first render mix to a minimum thickness of 7mm. Scratch the surface and leave to set before applying a second coat of similar thickness.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eAdmixture (for floor toppings and screeds)\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eAdd 5–7 liters of SBR per 25kg of cement. Apply the topping or screed to a minimum thickness of 12mm.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eWater Resistant Primer\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003eDilute 1 part SBR with 3 parts water and apply directly to the surface.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eStorage \u0026amp; Limitations\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eLimitations:\u003c\/span\u003e\u003cspan\u003eNot suitable for use with coloured exterior decorative renders. Do not over-mix. Dispose of product and packaging correctly.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eShelf Life:\u003c\/span\u003e\u003cspan\u003e12 months from the date of manufacture.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eStorage Conditions:\u003c\/span\u003e\u003cspan\u003eStore in cool, dry conditions (between 5°C and 25°C) away from direct sunlight. Protect from frost.\u003cbr\u003e\u003cbr\u003e\u003c\/span\u003e\u003cspan class=\"a-text-bold\"\u003eHealth \u0026amp; Safety\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"PowerChem","offers":[{"title":"2.5L","offer_id":52413017260314,"sku":"SBR SUPERBOND 2.5L","price":21.99,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":52413017293082,"sku":"SBR SUPERBOND 5L","price":32.99,"currency_code":"GBP","in_stock":true},{"title":"20L","offer_id":52413017325850,"sku":"SBR ADMIXTURE 20L","price":119.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/5203\/3562\/files\/all_687e86bb-76e5-407b-ab02-8941a0e471bc.png?v=1782824087","url":"https:\/\/powerchem.uk\/products\/sbr-bonding-agent-waterproof-admixture-4-in-1-concrete-sealer-plaster-primer-mortar-additive-for-external-render-floor-screed-damp-proofing-crack-prevention","provider":"PowerChem","version":"1.0","type":"link"}