SEALS OUT WATER; AIR AND MOISTURE: Flexible; rubberized coating that seals out water; air and moisture to stop and prevent leaks, EASY TO USE: Applicator nozzle has a controlled spray pattern providing a clean; even coat. Once applied; the self leveling formula smoothly covers small gaps and cracks ensuring a watertight seal, TEMPERATURE AND UV RESISTANT: When dried; the rubberized coating is temperature and UV resistant resulting in lasting repairs, PAINTABLE: Works with both latex and oil based paints. When coating with oil based paints; use a primer first before painting, USE ON: Roofs; Gutters; Skylights; Flashing; Chimneys*; PVC Pipe Joints; Windows; RVs; DIY Projects and More! *For exterior use only. Not intended for inside of firebox or chimney stack.