{"product_id":"sika-black-jack-904-bitumen-roof-felt-adhesive","title":"Sika Black Jack 904 Bitumen Roof Felt Adhesive","description":"\u003cp\u003e\u003cspan\u003eSika Black Jack 904 Bitumen Roof Felt Adhesive is a cold-applied, oxidised bitumen-based adhesive for bonding all types of roofing felt to metal, concrete, timber and roofing felt, no heating or specialist equipment required. Once cured, it forms a tough but flexible waterproof film that hardens and softens with changing temperatures. Also suitable as a cold gritting solution for bonding mineral chippings on roofs with up to a 10° slope. Available in 1L, 2.5L, 5L and 25L tins.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eCold-applied, no heating or specialist equipment required, reducing health and safety risk on site\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eHigh bond strength for bonding all types of roofing felt to metal, concrete, timber and felt\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eTough but flexible film, hardens and softens with changing temperatures, maintaining bond through seasonal movement\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAlso suitable as a cold gritting solution for mineral chippings on roofs up to 10° slope\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eResistant to salt solutions, dilute acids and alkalis, and water\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAvailable in 1L, 2.5L, 5L and 25L tins\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eAll surfaces must be dry, stable and free from dirt, dust and grease before application\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003ePrime concrete and other porous surfaces with Sika Black Jack 902 Bitumen \u0026amp; Flashing Primer and allow to dry fully before applying\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eApply by brush or mop and leave open for 15–30 minutes to develop full tackiness before laying felt\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eRoll felt home firmly to exclude all air, weight down until fully adhered\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eFelt laps should be minimum 75mm at edges and 150mm at roll ends\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eCheck all bonding 24 hours after laying,  press home any areas lacking full adhesion\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eOn timber roofs, the first felt layer must be nailed down; second and third layers may be bonded with 904\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eNot suitable for vertical surfaces\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eApply between +10°C and +25°C, surfaces must be free from ice and water\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eClean tools immediately with Sika Wonder Wipes or white spirit | Shelf life 24 months\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sika","offers":[{"title":"1L","offer_id":57127707312460,"sku":"BM05887","price":15.47,"currency_code":"GBP","in_stock":true},{"title":"2.5L","offer_id":57127707345228,"sku":"BM05888","price":26.63,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":57127707377996,"sku":"BM05889","price":42.22,"currency_code":"GBP","in_stock":true},{"title":"25L","offer_id":57127707410764,"sku":"BM05890","price":113.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/sika-sika-black-jack-904-bitumen-roof-felt-adhesive-1232467132.png?v=1776262544","url":"https:\/\/www.constructionsuppliesuk.co.uk\/products\/sika-black-jack-904-bitumen-roof-felt-adhesive","provider":"Construction Supplies UK","version":"1.0","type":"link"}