{"product_id":"gacoflex-a4271-bleedtrap-base-coat","title":"GacoFlex A4271 BleedTrap Base Coat","description":"\u003cp\u003e\u003cstrong\u003eGacoFlex A4271 BleedTrap Base Coat\u003c\/strong\u003e is a single-component, water-based acrylic sealer for roofing substrates that contain bitumen. Engineered to encapsulate the oil that exudes from asphalt, it traps that oil inside the sealer so it cannot bleed through to the coating above.\u003c\/p\u003e\n\n\u003cp\u003eBecause it is water-based with a VOC under 50 g\/L, it applies by roller, brush or airless sprayer and \u003cstrong\u003ecleans up with soap and water\u003c\/strong\u003e. Always carry out an adhesion test before you coat.\u003c\/p\u003e\n\n\u003cdiv style=\"background-color: #fdf2f2; border-left: 5px solid #dc2626; padding: 15px; margin: 20px 0;\"\u003e\n  \u003cp style=\"margin: 0; font-weight: bold; color: #991b1b;\"\u003e⚠️ IMPORTANT COVERAGE NOTICE:\u003c\/p\u003e\n  \u003cp style=\"margin: 5px 0 0 0; color: #7f1d1d;\"\u003eCoverage is calculated \u003cstrong\u003eper coat\u003c\/strong\u003e. Target \u003cstrong\u003e3.8 L per 9.3 m²\u003c\/strong\u003e per coat, so one 18.9 L pail covers approximately \u003cstrong\u003e46 m²\u003c\/strong\u003e per coat. Very rough or irregular surfaces need more material, and a continuous \u003cstrong\u003e6 mil dry film\u003c\/strong\u003e is important to block oil migration.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eWhy Contractors Choose A4271 BleedTrap:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTraps Bitumen Oil:\u003c\/strong\u003e Encapsulates the oil that seeps from asphalt and helps inhibit bleed-through to GacoFlex coatings.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWater-Based \u0026amp; Low VOC:\u003c\/strong\u003e Single component and easy to apply, with a VOC under 50 g\/L.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrong Adhesion:\u003c\/strong\u003e Bonds well to modified bitumen and asphaltic substrates, galvanized steel, polyurethane foam and concrete.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReady to Recoat:\u003c\/strong\u003e Allow a minimum of 4 hours to cure at 24°C and 50% RH before the next coat.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIdeal Applications \u0026amp; Substrates:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-Up \u0026amp; Asphaltic Roofs:\u003c\/strong\u003e Built-up roofing (BUR) and smooth or granulated asphaltic membranes. Not intended for gravel-surfaced BUR.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModified Bitumen:\u003c\/strong\u003e All types of modified bitumen. Strongly recommended over APP and smooth built-up roofing, and required for all warrantable applications over SBS.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMineral Surface Cap Sheets:\u003c\/strong\u003e Included in the recommended substrates for oil bleed control.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOther Substrates:\u003c\/strong\u003e Galvanized steel, polyurethane foam and concrete. May not suit all single-ply membranes, so always run an adhesion test.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv style=\"background-color: #f0fdf4; border-left: 5px solid #16a34a; padding: 15px; margin: 20px 0;\"\u003e\n  \u003cp style=\"margin: 0; font-weight: bold; color: #14532d;\"\u003e🛠️ SUBSTRATE \u0026amp; PRIMING SPECIFICATIONS:\u003c\/p\u003e\n  \u003cul style=\"margin: 5px 0 0 0; padding-left: 20px; color: #14532d;\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUnder GacoFlex S4200 \u0026amp; GacoRoof:\u003c\/strong\u003e These silicone coatings can go directly over A4271 once it has thoroughly dried. No primer is typically required, but perform an adhesion test.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUnder S2000 \u0026amp; S2100 Silicones:\u003c\/strong\u003e These require a coat of \u003cem\u003eE5320 2-Part Epoxy Primer\/Filler\u003c\/em\u003e over A4271, dried before the silicone goes on.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eColoured Silicones:\u003c\/strong\u003e Gaco does not warrant or recommend pigmented (non-white) silicone coatings over asphalt substrates.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eApplication Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication Methods:\u003c\/strong\u003e Roller, brush or airless sprayer (2,000-3,000 psi at the gun tip, 3.8-11.4 L per minute, tip sizes 0.635-1.016 mm). Mix until homogeneous and do not thin.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Windows:\u003c\/strong\u003e Apply only when air, material and surface temperatures are between 10°C and 43°C. Do not coat if rain or heavy dew is expected within 4 hours.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSurface Preparation:\u003c\/strong\u003e Surface must be clean and completely dry. Do not apply to standing water and do not pressure wash asphalt. Remove dirt and loose granules with a power broom or industrial vacuum.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- Professional PDF Download Section Start --\u003e\n\u003cdiv style=\"background-color: #f8fafc; border: 1px solid #e2e8f0; border-radius: 6px; padding: 20px; margin-top: 30px; text-align: center;\"\u003e\n  \u003cp style=\"margin: 0 0 12px 0; font-weight: bold; font-size: 16px; color: #1e293b;\"\u003eTechnical Documentation \u0026amp; Specifications\u003c\/p\u003e\n  \u003cp style=\"margin: 0 0 20px 0; font-size: 14px; color: #64748b;\"\u003eDownload the manufacturer's product data sheet including coverage, substrate priming specifications and application instructions.\u003c\/p\u003e\n  \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0250\/7948\/0404\/files\/gacoflex-a4271-bleedtrap-data-sheet.pdf\" target=\"_blank\" style=\"display: inline-block; background-color: #065f46; color: #ffffff; padding: 12px 24px; font-weight: bold; font-size: 14px; text-decoration: none; border-radius: 4px; transition: background-color 0.2s ease;\"\u003e\n    📄 Download Product Data Sheet (PDF)\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c!-- Professional PDF Download Section End --\u003e","brand":"GacoFlex","offers":[{"title":"18.9 L pail","offer_id":59666338742620,"sku":"DUR\/GAC\/BLE\/001","price":203.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0250\/7948\/0404\/files\/gacoflex-a4271-bleed-trap-base-coat-pail_c545570a-c93b-4a51-a021-1e962b6d4793.webp?v=1793138992","url":"https:\/\/www.mybuildonline.com\/products\/gacoflex-a4271-bleedtrap-base-coat","provider":"My Build Online","version":"1.0","type":"link"}