Seals out water, air, and moisture: Gorilla waterproof sealant provides a flexible rubberized coating that seals out water, air, and moisture to stop and prevent leaksEasy to apply: Can be applied by brush, roll, trowel, dip, or pouring; Once applied, our self leveling sealant smoothly covers small gaps and cracks ensuring a watertight sealTemperature and UV resistant: When dried, the rubberized coating of this Gorilla Glue sealant is temperature and UV resistant, resulting in lasting Gorilla Tough repairsPaintable: Our sealant works with both latex and oil based paints; When coating with oil based paints, use a primer before paintingUse for: roofs, gutters, skylights, flashing, chimneys**, PVC pipe joints, window sealant, RV roof sealant, DIY projects and more