Patching and sealing a roof, this 5-gallon plastic roof cement is a thick, trowel-grade asphalt mastic that seals leaks, patches cracks, and bonds flashing and seams on a roof, standing up to weather and sun once applied. Troweled over a crack, seam, flashing joint, or around a vent or chimney, it forms a flexible, waterproof seal that stays put through heat, cold, and rain, bonding to built-up, modified, metal, and shingle roofs. It fills and seals where water gets in, making a fast, durable roof repair without tearing off and replacing. A 5-gallon pail covers many repairs or a large flashing run. It is the standard mastic for roof leak repair and flashing.
Key Features:
- 5 Gal. Roof Cement -- A thick, trowel-grade asphalt mastic for roof repair.
- Seals Leaks & Cracks -- Patches cracks, seams, and flashing joints watertight.
- Flexible, Waterproof Seal -- Stays put through heat, cold, and rain.
- Bonds Many Roofs -- Built-up, modified, metal, and shingle roofs.
- Trowel-Grade -- Fills and seals where water gets in.
Where to Use:
- Roof repair -- Patching leaks, cracks, and seams.
- Flashing & penetrations -- Sealing flashing, vents, and chimneys.
- Building maintenance -- Fast, durable roof leak repair.