{"product_id":"dicor-551lsv-1-haps-free-non-leveling-lap-sealant","title":"Dicor 551LSV-1 HAPS-Free Non-Leveling Lap Sealant","description":"\u003cp\u003e\u003cstrong\u003eDicor 551LSV-1 is a HAPS-free, non-leveling lap sealant designed to form long-lasting, flexible watertight seals on RV roofs, flashings, and common roof penetrations.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eBuilt for RV maintenance and professional roofing work, this ivory-colored lap sealant bonds to EPDM and many other roofing substrates while remaining flexible and UV-stable. Formulated to resist discoloration and keep joints sealed, the product is offered in a convenient 10.3-ounce cartridge for targeted repairs and trim work where a non-sagging compound is required.\u003c\/p\u003e\n\n\u003ch3\u003eHow does Dicor lap sealant perform on different roof materials?\u003c\/h3\u003e\n\u003cp\u003eDicor 551LSV-1 is formulated primarily for EPDM but is compatible with a broad spectrum of roofing surfaces, making it practical for mixed-material repairs. It adheres well to metals, vinyl, concrete, and many synthetic roof membranes, so you can use it around vents, screws, and trim without switching products.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDesigned for EPDM and works with Dicor DiFlex II, Tufflex, PVC, and PriTEK TPO\u003c\/li\u003e\n  \u003cli\u003eAdhesion to aluminum, galvanized metal, wood, vinyl, mortar, and concrete\u003c\/li\u003e\n  \u003cli\u003eNon-leveling formula won’t sag on vertical seams or angled flashings\u003c\/li\u003e\n  \u003cli\u003eColor-matched ivory finish reduces visible touch-up contrast\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat makes this sealant suitable for long-term outdoor exposure?\u003c\/h3\u003e\n\u003cp\u003eThe compound is sun-ray stabilized to resist yellowing and surface spoilage from UV exposure, extending visual and functional life on exposed roof areas. It remains flexible after curing, which helps the seal accommodate thermal movement and vibrations common on RV roofs.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUV-stable pigments prevent discoloration and streaking\u003c\/li\u003e\n  \u003cli\u003eFlexible cured sealant tolerates expansion and contraction\u003c\/li\u003e\n  \u003cli\u003eContinuous sealing property prevents water intrusion at seams\u003c\/li\u003e\n  \u003cli\u003eFormulation minimizes staining on adjacent materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere should I apply Dicor 551LSV-1 on my RV or roof?\u003c\/h3\u003e\n\u003cp\u003eUse this lap sealant to seal roof edges, around air vents and plumbing stacks, and over screw heads and trim where a watertight joint is needed. Its non-sagging consistency makes it ideal for vertical and overhead repairs, and the 10.3 oz cartridge fits standard caulking guns for controlled application.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSeal roof edge laps and flashing overlaps\u003c\/li\u003e\n  \u003cli\u003eSeal around air vents, vent pipes, antennas, and skylights\u003c\/li\u003e\n  \u003cli\u003eCover screw heads and fastener areas to prevent leaks\u003c\/li\u003e\n  \u003cli\u003eTouch-up seams and trim on mixed-material roof systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do I use and maintain the cured sealant?\u003c\/h3\u003e\n\u003cp\u003eApply to clean, dry surfaces with a standard caulking gun and tool the bead as needed; no special primers are required for most substrates listed by the manufacturer. After curing, the seal remains flexible; inspect periodically and reapply if gaps, cracking, or adhesion loss appears.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSurface must be clean, dry, and free of loose debris or oil\u003c\/li\u003e\n  \u003cli\u003eCut nozzle to desired bead size and apply with caulking gun\u003c\/li\u003e\n  \u003cli\u003eTool bead within manufacturer’s working time for neat finish\u003c\/li\u003e\n  \u003cli\u003eAllow full cure before subjecting to water or heavy movement\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this product is for: Dicor 551LSV-1 is aimed at RV owners, mobile-home and light-commercial roof technicians, and DIYers who need a reliable, non-sagging lap sealant for roof edges, penetrations, and trim repairs. It’s especially useful when working on EPDM and common synthetic roof systems where UV stability and material compatibility matter. Choose this 10.3-ounce ivory cartridge when you want a color-matched, long-lasting seal that’s easy to apply in tight or overhead spots.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is Dicor 551LSV-1 compatible with EPDM roofs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It’s formulated for EPDM and also bonds well to many other roofing materials listed by the manufacturer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I apply this sealant on vertical seams without sagging?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The non-leveling formula resists sagging, making it suitable for vertical and overhead applications.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Dicor","offers":[{"title":"Default Title","offer_id":48086953492638,"sku":"B01DQBSHF4","price":29.73,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/dicor-front-cartridge-551lsv-1.jpg?v=1785910593","url":"https:\/\/northtrailauto.ca\/products\/dicor-551lsv-1-haps-free-non-leveling-lap-sealant","provider":"North Trail Auto","version":"1.0","type":"link"}