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Dicor 501LSW is a self-leveling lap sealant for RV roofs, sold in 10.3 oz tubes. It flows out flat on horizontal surfaces, which makes it the standard choice for sealing seams, edges and around roof vents and skylights. It is sun-stabilized and made not to stain or discolor EPDM, TPO and PVC membranes, and it bonds to aluminum, wood, vinyl, galvanized metal, fiberglass, mortar and concrete. RV owners treat it as the go-to sealant for routine roof maintenance; the main trade-off is that it only self-levels on flat surfaces, so vertical seams need a non-sag sealant instead.
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RV owners widely rely on Dicor lap sealant for roof maintenance and report it flows out flat and stays put on horizontal seams. Complaints center on vertical use and on tubes hardening after opening.
Dicor Self-Leveling Lap Sealant is made for sealing RV roofs. It is stabilized against sun rays, so it resists spoiling and discoloration. It does not stain or discolor the roofing material it is applied to.
The sealant is self-leveling, which gives a smooth application on horizontal surfaces. It works with EPDM, TPO and PVC membranes and adheres firmly to aluminum, mortar, wood, vinyl, galvanized metal, fiberglass and concrete.
