{"title":"GCP Applied Technologies","description":"\u003cp\u003eGCP Applied Technologies, formerly known as Grace Construction Products, is a leading international manufacturer of below-ground waterproofing systems. The Grace name remains widely recognised in the UK waterproofing industry, where their Bituthene and Preprufe membrane ranges have been specified on major commercial, residential and infrastructure projects for many years.\u003c\/p\u003e\n\u003cp class=\"MsoNormal\" style=\"margin-bottom: 7.0pt;\"\u003eBituthene is a self-adhesive sheet waterproofing membrane applied to the external face of below-ground structures, providing reliable Type A barrier protection against water ingress and ground gases. Preprufe is a pre-applied membrane system designed for new-build applications where the membrane is applied to the blinding slab before the structure is poured, creating a continuous bond between membrane and concrete. Both ranges are BBA certified and comply with the requirements of BS 8102:2009 for Type A below-ground waterproofing. Complementary primers and accessories are also available. For technical support or project quantities, call our team on 03300 55 32 02.\u003c\/p\u003e","products":[{"product_id":"gcp-bituthene-8000","title":"GCP Bituthene 8000","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bituthene 8000 delivers high-performance post-applied waterproofing for below-ground sub-structures. Its 1.52mm thick light grey HDPE composite film is engineered for superior strength and flexibility, and the light colour makes any accidental damage clearly visible, black compound showing through the grey film, making patch repairs straightforward and quality control easier on site. Printed overlap lines ensure minimum laps are consistently maintained.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe membrane is damp surface tolerant and can be used on green concrete, making it practical in typical below-ground construction conditions. Primer S2 must be applied to all surfaces except below-ground load bearing slabs and Preprufe membrane surfaces. All internal and external corners and penetrations must be detailed with Bituthene LM(E) liquid membrane before the sheet membrane is applied.\u003c\/p\u003e\n\u003cp\u003eBITUTHENE® 8000 Membrane for application to surfaces at ambient temperatures of -5°C to 20ºC \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePrinted overlap lines for consistent minimum 50mm laps\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eChemically resistant, protects against aggressive soils, contaminated groundwater and hydrocarbons\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDamp and green concrete tolerant\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWater \u0026amp; vapour proof\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGas resistant (BBA 2 points as a gas resistant barrier)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003e70m hydrostatic pressure resistance with ultra low moisture transmission rate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eSmooth finish\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrimer S2 must be applied to all surfaces except below ground load bearing slabs\u003c\/li\u003e\n\u003cli\u003eTypical applications; external waterproofing of basement walls, retaining walls and foundations, below-ground sub-structures — BS 8102:2009 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127681032524,"sku":"BM05653","price":387.62,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bituthene-8000-1232467443.jpg?v=1776263373"},{"product_id":"gcp-bituthene-8000s","title":"GCP Bituthene 8000s","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bituthene 8000S delivers high-performance post-applied waterproofing for below-ground sub-structures in warmer site conditions. Its 1.52mm thick light grey HDPE composite film is engineered for superior strength and flexibility, and the light colour makes any accidental damage clearly visible — black compound showing through the grey film — making patch repairs straightforward and quality control easier on site. Printed overlap lines ensure minimum laps are consistently maintained.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe membrane is damp surface tolerant and can be used on green concrete, making it practical in typical below-ground construction conditions. Primer S2 must be applied to all surfaces except below-ground load bearing slabs and Preprufe membrane surfaces. All internal and external corners and penetrations must be detailed with Bituthene LM(E) liquid membrane before the sheet membrane is applied.\u003c\/p\u003e\n\u003cp\u003eBITUTHENE® 8000S Membrane for application to surfaces at ambient temperatures of 15°C to 35ºC\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePrinted overlap lines for consistent minimum 50mm laps\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eChemically resistant, protects against aggressive soils, contaminated groundwater and hydrocarbons\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDamp and green concrete tolerant\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWater \u0026amp; vapour proof\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGas resistant (BBA 2 points as a gas resistant barrier)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003e70m hydrostatic pressure resistance with ultra low moisture transmission rate\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eSmooth finish\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePrimer S2 must be applied to all surfaces except below ground load bearing slabs\u003c\/li\u003e\n\u003cli\u003eTypical applications; external waterproofing of basement walls, retaining walls and foundations, below-ground sub-structures — BS 8102:2009 compliant\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127681884492,"sku":"BM05654","price":406.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bituthene-8000s-1232467442.jpg?v=1776263193"},{"product_id":"gcp-bituthene-proctection-board-03","title":"GCP Bituthene Protection Board 03","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Protection 03 is a robust asphaltic protective board specifically engineered to shield self-adhesive waterproofing membranes from mechanical damage caused by backfill, site operations and construction traffic. Its high heat resistance allows reliable use in elevated temperature environments, and its puncture and impact resistance holds up at +35°C and +50°C, making it suitable for a wide range of site conditions.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eHigh heat resistance, tested to +150°C (EN 1110)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eHigh puncture resistance, protects membranes from sharp stones and debris during backfilling\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eHigh impact resistance, withstands dropped tools and construction traffic\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSupports static loads without deformation\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEasy to install butt fitted edge to edge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMaximum UV exposure is 30 days. \u003c\/li\u003e\n\u003cli\u003eOn vertical walls, backfill should be completed as soon as possible after installation\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTo locate boards, prime five 150 mm x 150 mm ‘patches’ (one in each corner, and one in the middle) of each board with suitable GCP Primer and allow to dry. Apply Bitustik™ 4000 150 mm double sided bitumen tape to the primed strips.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127682474316,"sku":"BM05655","price":24.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bituthene-protection-board-03-1232467449.jpg?v=1776262935"},{"product_id":"gcp-bituthene-b1-primer","title":"GCP Bituthene B1 Primer","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bituthene Primer B1 is the recommended primer for use with Bituthene GP membranes on dry substrates. Its rapid-drying formulation makes it particularly well suited to winter working conditions, reaching a tack-free state in as little as 30 minutes at 20°C — though drying time will be longer in cold temperatures. Deep puddles of primer should be avoided as these will extend drying time.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePriming should be limited to an area that can be covered with membrane on the same day. Any areas that accumulate dust or dirt after priming must be re-primed before the membrane is applied. Do not apply Primer B1 directly to Bituthene membranes.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFast drying \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eTack free in approximately 30 minutes at 20°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFormulated for Bituthene GP membrane\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSuitable for use in temperatures above 5°C, so ideal for the colder months of the year.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCoverage is 8-10m² per litre\u003c\/li\u003e\n\u003cli\u003eApply by brush or roller to clean dry surfaces\u003c\/li\u003e\n\u003cli\u003ePriming should be limited to an area that can be covered with membrane on the same day.\u003c\/li\u003e\n\u003cli\u003eAny areas that accumulate dust or dirt after priming must be re-primed before the membrane is applied.\u003c\/li\u003e\n\u003cli\u003eDo not apply Primer B1 directly to Bituthene membranes.\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\u003cstrong\u003eImportant: Primer B1 is not suitable for application to green concrete, wet surfaces or any damp-to-touch surfaces. \u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"5 litre","offer_id":57127682539852,"sku":"BM05656","price":48.93,"currency_code":"GBP","in_stock":true},{"title":"25 litre","offer_id":57127682572620,"sku":"BM05657","price":250.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bituthene-b1-primer-1232467452.webp?v=1776262971"},{"product_id":"gcp-bituthene-gp-membrane","title":"GCP Bituthene GP Membrane","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bituthene GP is an entry-level post-applied waterproofing membrane for low-risk below-ground situations such as single-skin basement walls and simple tanking details where hydrostatic pressure is minimal. Its self-adhesive rubber\/bitumen compound bonds directly to primed concrete and masonry substrates, with adjacent rolls overlapped a minimum of 50mm and firmly rolled to ensure continuity. Bituthene LM liquid membrane is applied at all corners and penetrations prior to laying the sheet.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCold applied, self-adhesive, no flame, no heating, no torch-on equipment\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eResists up to 1m hydrostatic head when fully supported\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eResistant to most dilute acids and alkalis\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFlexible accommodates minor settlement and shrinkage movement \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBBA certified\u003c\/li\u003e\n\u003cli\u003eProtection 03 board must be used immediately to protect the membrane from damage by other trades, backfill or construction materials.\u003c\/li\u003e\n\u003cli\u003eMinimum application temperature: +5°C\u003c\/li\u003e\n\u003cli\u003eTypical applications include; external waterproofing of basement walls and foundations, below-ground concrete and masonry structures with up to 1m hydrostatic head and cold-applied post-applied tanking on clean, dry, primed substrates\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127682867532,"sku":"BM05658","price":211.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bituthene-gp-membrane-1232467455.jpg?v=1776261793"},{"product_id":"gcp-bitustik-bt","title":"GCP Bitustik BT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bitustik BT provides a simple and reliable method for bonding and sealing details across GCP's waterproofing membrane systems. Its double-sided butyl rubber adhesive delivers excellent adhesion to most building substrates, and its polyester mesh reinforcement ensures the tape holds its form without tearing during application. Both sides are protected by silicone release paper until application.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eOn concrete substrates, Bituthene Primer S2 should be applied first to improve adhesion, particularly on dusty surfaces. On GCP membranes, Hydroduct drainage, Serviseal PVC waterstops and GCP protection boards, surfaces should simply be wiped clean and dry before application. Roll ends and cut edges should be overlapped a minimum of 50mm\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eExcellent adhesion to most substrates\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor use as a detailing aid with \u003cspan\u003eBituthene, Preprufe, Hydroduct and GCP Protection boards \u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eSimple peel-and-apply — no heat or specialist tools required\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMinimum application temperature: +5°C\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMinimum lap overlap: 50mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSurfaces must be clean and dry before application\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"150mm","offer_id":57127682965836,"sku":"BM011582","price":161.0,"currency_code":"GBP","in_stock":true},{"title":"240mm","offer_id":57127682998604,"sku":"BM05768","price":196.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bitustik-bt-1232467453.jpg?v=1776334008"},{"product_id":"gcp-betex-flex","title":"GCP Betec Flex","description":"\u003cp\u003eGCP Betec Flex is a two-part flexible cementitious waterproofing system conforming to EN 1504-2 Principle 1.3 (ingress protection). Its polymer-modified cement matrix delivers outstanding adhesion to both dry and wet concrete (\u0026gt;1.5 N\/mm²), crack bridging to Class A4 at +23°C and Class A3 at -10°C, and comprehensive resistance to carbonation, chloride diffusion and freeze\/thaw cycling. The mixed slurry has a workability time of approximately 30 minutes and can be applied by brush, roller, notched trowel or spray equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBoth Part A and Part B must be ordered, neither component can be used independently. One 9kg drum of Part A pairs with one 23kg bag of Part B to make one complete 32kg kit\u003c\/strong\u003e.\u003c\/p\u003e","brand":"GCP","offers":[{"title":"Part A","offer_id":57127683522892,"sku":"BM05659","price":236.67,"currency_code":"GBP","in_stock":true},{"title":"Part B","offer_id":57127683555660,"sku":"BM05767","price":101.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-betec-flex-1232467458.png?v=1776261634"},{"product_id":"gcp-betec-350","title":"GCP Betec 350","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Betec 350 is a purpose-designed, waterproof cementitious plugging compound for the permanent sealing of tie-bar holes in formed concrete. Its polymer modification delivers low permeability and high bond strength to the substrate, while fibre reinforcement improves overall strength and reduces shrinkage. With a working life of 20 minutes and initial set in approximately 30 minutes at 20°C, it allows construction to continue with minimal downtime.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe compound is applied by hand or trowel, compacted firmly into the tie-bar hole, and cured using standard concrete curing methods. The mix ratio is 6:1 powder to water by volume.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRapid set approximately 30 minutes at 20°C\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eLow permeability, high strength\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSingle component - just add water \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ePack size: 8kg, yields 4 litres which covers approx. 110 holes at 26mm diameter\u003c\/li\u003e\n\u003cli\u003eMixed density 2150 kg\/m³\u003c\/li\u003e\n\u003cli\u003eMix ratio: 6 parts powder to 1 part water by volume, always add powder to water\u003c\/li\u003e\n\u003cli\u003eWorking life: 20 minutes at 20°C\u003c\/li\u003e\n\u003cli\u003eApplication thickness: 5mm minimum, 50mm maximum\u003c\/li\u003e\n\u003cli\u003eApplication temperature: 5°C to 35°C\u003c\/li\u003e\n\u003cli\u003eApply by hand (wear protective gloves) or trowel; compact well into hole\u003c\/li\u003e\n\u003cli\u003eCompressive strength development; 1 hour: 8.0 N\/mm², 1 day: 38.0 N\/mm², 7 days: 50.0 N\/mm², 28 days: 60.0 N\/mm²\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127683883340,"sku":"BM05660","price":101.67,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-betec-350-1232467459.png?v=1776261615"},{"product_id":"gcp-bentorub-waterstop","title":"GCP Bentorub Waterstop","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Bentorub+ is a permanently active hydrophilic waterstop system for construction joints in concrete sub-structures. The sodium bentonite clay component swells when in contact with water, filling hairline cracks and voids that develop through concrete shrinkage, maintaining a watertight seal throughout the life of the structure. The highly elastic and plastic properties of Bentorub+ also counterbalance initial concrete shrinkage and can fill small honeycombs.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe built-in delayed expansion prevents the strip from reacting prematurely with rainwater before or during installation, giving contractors confidence in wet working conditions. For high-risk situations, Bentorub+ can be used in combination with Infiltra Stop injection grout for added security. Typical applications;  c\u003cspan style=\"font-size: 0.875rem;\"\u003eonstruction joints, cold joints and working joints in in-situ concrete, p\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eipe penetrations through floors and walls, s\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eewer joints and culverts, a\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003egainst slurry walls, steel sheet piling and secant piled walls. Also w\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eater treatment plants, reservoirs, swimming pools and underground parking, m\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eetro and tunnel works\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSwells to approximately 4x original volume in contact with water\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePermanently active for the design life of the structure\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDelayed expansion prevents premature reaction with rainwater\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFills hairline cracks and small honeycombs in the joint\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFix by gun nailing or adhesive; protect with Bentosteel fixing cage\u003c\/li\u003e\n\u003cli\u003eMinimum concrete cover: 70mm; minimum overlap: 100mm\u003c\/li\u003e\n\u003cli\u003eWRAS approved\u003c\/li\u003e\n\u003cli\u003eNatural sodium bentonite clay and synthetic rubber — green colour\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127683916108,"sku":"BM05661","price":37.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-bentorub-waterstop-1232467460.jpg?v=1776261587"},{"product_id":"gcp-adcore-mastic-310ml","title":"GCP Adcore Mastic 310ml","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Adcor Mastic is an essential ancillary within the Adcor hydro-expansive waterstop system, addressing one of the most common on-site challenges  irregular or uneven concrete joint faces. By gunning a 10mm bead of Adcor Mastic as a bedding layer, a consistent and fully supported base is created for the Adcor 500S or 500T strip, ensuring reliable contact and performance across the full length of the joint.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eWhere access or geometry makes installation of Adcor waterstop strip impractical — such as complex corners or tight penetration details, Adcor Mastic can be applied as a standalone hydrophilic sealant to maintain waterstop continuity.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSwells on contact with water\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNo special applicator required, as a normal sealant gun can be used\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ecan be used to repair  damaged sections of Adcor waterstop strip\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIdeal for bedding bead on irregular concrete surfaces prior to Adcor 500S or 500T installation\u003c\/li\u003e\n\u003cli\u003eCan be used as a standalone hydrophilic sealant at complex details and penetrations\u003c\/li\u003e\n\u003cli\u003eIdeal gap filler at corners and changes in geometry within the Adcor waterstop system\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127684145484,"sku":"BM05662","price":75.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-adcore-mastic-310ml-1232467462.png?v=1776261551"},{"product_id":"gcp-adcor-adhesive-ms","title":"GCP Adcor Adhesive MS","description":"","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127684243788,"sku":"BM05663","price":32.02,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-adcor-adhesive-ms-1232467463.png?v=1776261471"},{"product_id":"gcp-adcor-500s","title":"GCP Adcor 500S","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Adcor 500S delivers higher performance than conventional bentonite or swellable rubber waterstops by combining controlled volumetric expansion with retained cohesive strength and a malleable, conformable profile that adapts to irregular concrete substrates. The 25mm x 20mm strip achieves a minimum 100% volumetric expansion in cement water, generating a watertight seal that resists more than 6 bar (60m) of hydrostatic pressure.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe product can be fixed by masonry nail, with Adcor Adhesive MS on clean substrates, or with Pak Adhesive on dry substrates. At movement joints, Adcor 500S links directly to GCP's Servitite AT 200 or Serviseal AT 240 co-extruded PVC\/hydrophilic waterstops using Secura Clips, providing full waterstop continuity across construction and movement joint intersections.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNo protective sheet mesh required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCan be bent 180°\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRetains cohesive strength \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eResists at least 6 bar (60m) hydrostatic pressure\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eReproducible swell after wet\/dry cycling; unaffected by freeze\/thaw\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cspan\u003eControlled expansion — reduces risk of concrete spalling\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eMinimum concrete cover: 70mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Not suitable for use in movement joints or with precast concrete components.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eTypical applications; Construction joints in in-situ concrete sub-structures, Casting new concrete against existing concrete, floor slabs cast against diaphragm walls, steel sheet piles and secant piled walls, joints between floor slabs and pile caps\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127684538700,"sku":"BM05664","price":78.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-adcor-500s-1232467733.png?v=1776261526"},{"product_id":"gcp-aerofill-1","title":"GCP Aerofill 1","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Aerofil 1 is a versatile expansion joint filler suitable for a wide range of structural and facade applications. Its low compressive strength makes it the recommended choice for soft compression joints in brickwork facades in accordance with BS 5628: Part 3: 2005, and for bridge expansion joints in compliance with Specification for Highway Works Clause 1015, where preventing the transmission of horizontal forces to abutment walls is essential.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe closed cell polyethylene construction resists water absorption, and the material is chemically inert to most dilute acids and alkalis, and resistant to oil and hydrocarbons. Aerofil 1 achieves 90% recovery after release of load, and operates effectively between -5°C and +100°C. It can also be used as a backing filler around pipes, kitchen and sanitary ware, and for internal gap filling prior to surface sealing.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e120kN\/m² compressive strength \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e90% recovery after release of load\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eChemically resistant, inert to most dilute acids and resistant to oil and hydrocarbons\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eEasy to cut\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eOperating temperature -5°C to 100°C\u003c\/li\u003e\n\u003cli\u003eFix with Pak Adhesive \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GCP","offers":[{"title":"10mm","offer_id":57127684669772,"sku":"BM05665","price":34.07,"currency_code":"GBP","in_stock":true},{"title":"20mm","offer_id":57127684702540,"sku":"BM05666","price":66.0,"currency_code":"GBP","in_stock":true},{"title":"25mm","offer_id":57127684735308,"sku":"BM05667","price":81.58,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-aerofill-1-1232467464.png?v=1776261512"},{"product_id":"gcp-preprufe-tape-lt","title":"GCP Preprufe Tape LT","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGCP Preprufe Tape is the dedicated detailing tape for use within the Preprufe Plus pre-applied waterproofing system. It is used to seal roll ends, cut edges, side laps in cold conditions, and all penetration details, ensuring continuous adhesive bond to poured concrete across every junction and termination in the membrane. No primers, back-taping or specialist equipment are required.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePreprufe Tape LT is specifically formulated for cold weather application, offering optimal performance between -4°C and 15°C, making it the required tape for all side laps, end laps and detailing whenever installation temperatures fall below 13°C. It can also be used at temperatures up to 30°C, making it a versatile year-round choice.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eReinforced pressure-sensitive adhesive tape with Advanced Bond Technology™\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eBonds to concrete to maintain fully continuous waterproofing system\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eNo priming or back-taping required\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCompatible with Preprufe 300R Plus, 160R Plus and their LT variants\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRemove blue release liner immediately after application\u003c\/li\u003e\n\u003cli\u003eIdeal for sealing cut edges and roll ens of Preprufe Plus membrane\u003c\/li\u003e\n\u003cli\u003eExcellent for pipe penetrations pile caps and service entries\u003c\/li\u003e\n\u003cli\u003eCan be used for covering any areas of damaged adhesive or exposed selvedge\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127685652812,"sku":"BM011587","price":135.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-preprufe-tape-lt-1232467465.jpg?v=1776261132"},{"product_id":"gcp-preprufe-300r","title":"GCP Preprufe 300R","description":"\u003cp\u003eGCP Preprufe 300R Plus is a 1.2mm heavy-duty HDPE pre-applied waterproofing membrane designed for horizontal below-slab applications on mud slabs, rafts and pile caps, and for vertical blind-side applications using single-sided formwork. Once concrete is poured directly against the membrane, Advanced Bond Technology™ creates a fully bonded, continuous watertight seal that eliminates lateral water migration — removing the need for compartmentalisation used with unbonded systems.\u003c\/p\u003e\n\u003cp\u003eThe ZipLap™ seam uses colour-coded ZipStrips™ (green and blue) to create a fast adhesive-to-adhesive overlap bond without heat, specialist tools or primers, making it practical year-round including in cold and wet conditions. The UV-resistant surface allows up to 56 days' exposure before concreting, offering useful programme flexibility.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBenefits \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReduces cost and saves time, fast installation only 2 operators needed.\u003c\/li\u003e\n\u003cli\u003eNo primers sealants fillets or specialist equipment are required \u003c\/li\u003e\n\u003cli\u003eEasy detailing, the membrane is flexible in use but keeps its shape and conforms to corners and other construction details\u003c\/li\u003e\n\u003cli\u003eBecause the Preprufe 300R is a smooth membrane unlike fabric, mesh or fleece membranes, you are able to clean the surface before concreting to ensure a secure bond\u003c\/li\u003e\n\u003cli\u003eCold applied and single layer, no hot works double layers or protection screed\u003c\/li\u003e\n\u003cli\u003ePassive waterproofing – unlike bentonite based systems, does not rely on water exposure activation, is designed to be unaffected by most groundwater contaminants, rain or wet\/dry cycling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWater and vapour proofing for all basement grades to BS 8102:2009.\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eGas resistance - PREPRUFE® 300R PLUS LT will restrict the ingress of methane, carbon dioxide and radon gases into buildings from landfill and naturally occurring sources and satisfy the performance criteria for a gas-resistant membrane, as defined in BS 8485:2015+A1:2019, Table 7. Independent test results available upon request\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003ePREPRUFE® 300R Plus membrane heavy-duty 1.2mm grade can be used in horizontal applications below concrete slabs and on rafts (i.e. mud slabs) and can be applied to vertical concrete substrates poured using blind side single sided formwork systems. PREPRUFE® 300R Plus Membrane is designed to accept the placing of heavy reinforcement using conventional concrete spacers.\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GCP","offers":[{"title":"Default Title","offer_id":57127687422284,"sku":"BM05668","price":1383.33,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/gcp-gcp-preprufe-300r-1232467461.png?v=1776260271"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/collections\/GCP_logo.png?v=1777987556","url":"https:\/\/www.constructionsuppliesuk.co.uk\/collections\/gcp-applied-technologies.oembed","provider":"Construction Supplies UK","version":"1.0","type":"link"}