{"product_id":"bona-r540-primer-damp-proof-membrane-dpm-6kg","title":"Bona R540 Primer \u0026 Damp Proof Membrane (DPM) – 6kg","description":"\u003cdiv class=\"wwfs-product-description\"\u003e\n\n  \u003cdiv class=\"wwfs-product-intro\"\u003e\n    \u003cp\u003e\n      \u003cstrong\u003eBona R540 Primer \u0026amp; Damp Proof Membrane\u003c\/strong\u003e is a\n      professional one-component polyurethane primer designed to prepare\n      absorbent and non-absorbent subfloors before the installation of wood\n      flooring using Bona silane and polyurethane adhesives.\n    \u003c\/p\u003e\n\n    \u003cp\u003e\n      As well as improving adhesion, Bona R540 acts as a moisture barrier on\n      suitable cementitious subfloors and helps reinforce weak or dusty\n      substrates before flooring installation.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eWhy Choose Bona R540?\u003c\/h2\u003e\n\n  \u003cul class=\"wwfs-benefit-list\"\u003e\n    \u003cli\u003ePrimer and damp proof membrane in one product\u003c\/li\u003e\n    \u003cli\u003eMoisture barrier up to 95% RH \/ 5 CM%\u003c\/li\u003e\n    \u003cli\u003eSuitable for absorbent and non-absorbent subfloors\u003c\/li\u003e\n    \u003cli\u003eHigh penetration into prepared substrates\u003c\/li\u003e\n    \u003cli\u003eHelps strengthen weak or dusty subfloors\u003c\/li\u003e\n    \u003cli\u003eCompatible with Bona silane and polyurethane adhesives\u003c\/li\u003e\n    \u003cli\u003eEasy roller application\u003c\/li\u003e\n    \u003cli\u003eSuitable for underfloor heating systems\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eSuitable Substrates\u003c\/h2\u003e\n\n  \u003cp\u003eBona R540 is suitable for correctly prepared:\u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003eConcrete floors\u003c\/li\u003e\n    \u003cli\u003eCementitious screeds\u003c\/li\u003e\n    \u003cli\u003eCalcium sulphate screeds (where approved)\u003c\/li\u003e\n    \u003cli\u003eSuitable absorbent subfloors\u003c\/li\u003e\n    \u003cli\u003eSuitable non-absorbent subfloors\u003c\/li\u003e\n    \u003cli\u003eWeak or dusty mineral subfloors requiring reinforcement\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"wwfs-advice-box\"\u003e\n    \u003cp\u003e\n      \u003cstrong\u003eD501 or R540?\u003c\/strong\u003e\u003cbr\u003e\n      Choose \u003cstrong\u003eBona D501\u003c\/strong\u003e where you simply need an adhesion\n      primer and dust binder. Choose \u003cstrong\u003eBona R540\u003c\/strong\u003e where moisture\n      suppression or additional subfloor reinforcement is required before\n      installing your wood flooring.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch2\u003eTechnical Information\u003c\/h2\u003e\n\n  \u003cdiv class=\"wwfs-table-wrap\"\u003e\n    \u003ctable class=\"wwfs-spec-table\"\u003e\n      \u003ctbody\u003e\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eProduct type\u003c\/th\u003e\n          \u003ctd\u003e1-component polyurethane primer \u0026amp; damp proof membrane\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003ePack size\u003c\/th\u003e\n          \u003ctd\u003e6kg\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eCoverage\u003c\/th\u003e\n          \u003ctd\u003eUp to approximately 35m² per container\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eMoisture protection\u003c\/th\u003e\n          \u003ctd\u003eUp to 5 CM% or 95% RH (subject to Bona installation guidelines)\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eApplication\u003c\/th\u003e\n          \u003ctd\u003eRoller or brush\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eSuitable for UFH\u003c\/th\u003e\n          \u003ctd\u003eYes\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n        \u003ctr\u003e\n          \u003cth scope=\"row\"\u003eCompatible adhesives\u003c\/th\u003e\n          \u003ctd\u003eBona silane and polyurethane adhesives\u003c\/td\u003e\n        \u003c\/tr\u003e\n\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"wwfs-small-print\"\u003e\n    Coverage is approximate and will vary depending on substrate porosity,\n    surface texture and application method.\n  \u003c\/p\u003e\n\n  \u003ch2\u003eCompatible Bona Adhesives\u003c\/h2\u003e\n\n  \u003cp\u003e\n    Once prepared, Bona R540 can be used before applying:\n  \u003c\/p\u003e\n\n  \u003cul\u003e\n    \u003cli\u003e\n      \u003ca href=\"https:\/\/wiltshirewoodflooringsupplies.co.uk\/products\/bona-r848-flexible-wood-flooring-adhesive-15kg\"\u003e\n        Bona R848\n      \u003c\/a\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n      \u003ca href=\"https:\/\/wiltshirewoodflooringsupplies.co.uk\/products\/bona-quantum-wood-flooring-adhesive-15kg-tub\"\u003e\n        Bona Quantum\n      \u003c\/a\u003e\n    \u003c\/li\u003e\n\n    \u003cli\u003e\n      \u003ca href=\"https:\/\/wiltshirewoodflooringsupplies.co.uk\/products\/bona-r848t-flexible-wood-flooring-adhesive-1kg-sausage\"\u003e\n        Bona R848T\n      \u003c\/a\u003e\n    \u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003ch2\u003eApplication\u003c\/h2\u003e\n\n  \u003col class=\"wwfs-step-list\"\u003e\n    \u003cli\u003eEnsure the subfloor is clean, dry and structurally sound.\u003c\/li\u003e\n\n    \u003cli\u003eRemove all loose dust, laitance and contaminants.\u003c\/li\u003e\n\n    \u003cli\u003eApply Bona R540 evenly using a suitable roller or brush.\u003c\/li\u003e\n\n    \u003cli\u003eAllow the primer to cure in accordance with the Technical Data Sheet.\u003c\/li\u003e\n\n    \u003cli\u003eInstall the selected Bona adhesive once the primer has fully cured.\u003c\/li\u003e\n  \u003c\/ol\u003e\n\n  \u003cdiv class=\"wwfs-important-box\"\u003e\n    \u003cp\u003e\n      \u003cstrong\u003eImportant:\u003c\/strong\u003e Always refer to the latest Bona Technical\n      Data Sheet before use. Moisture protection limits, curing times and\n      application methods depend on the substrate type and site conditions.\n      Carry out moisture testing before selecting the appropriate subfloor\n      preparation system.\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Bona","offers":[{"title":"Default Title","offer_id":53502635934075,"sku":"BR54002200M1BO","price":129.57,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0560\/7309\/3177\/files\/bona-r540-primerdpm-6kg-862642.jpg?v=1750764665","url":"https:\/\/wiltshirewoodflooringsupplies.co.uk\/products\/bona-r540-primer-damp-proof-membrane-dpm-6kg","provider":"Wiltshire Wood Flooring Supplies","version":"1.0","type":"link"}