Dottie RKM4 Roof Mastic, 1-Gallon

Keep roofs, penetrations and mounted equipment watertight with Dottie Roof Mastic 1-Gallon. This heavy-duty roof mastic from Dottie is engineered to deliver a durable, weatherproof seal that repairs leaks, cracked shingles and gaps around skylights, gutters and crevices — protecting building interiors and rooftop assets. Fortified with Power Gel Technology, the black, non-sag formula adheres to both wet and dry locations and resists cracking through freeze-thaw cycles, reducing repeat service calls. The 1-gallon size is ideal for contractors and facilities teams who need economical coverage for large repair jobs and routine maintenance. Beyond general roofing, this mastic helps secure rooftop security and surveillance installations by sealing seams and cable penetrations to prevent moisture intrusion that can compromise monitoring and networking equipment. Application is straightforward with trowels or standard caulking tools for fast, reliable results. For dependable, long-lasting roof repairs and protection of critical rooftop electronics, choose Dottie Roof Mastic (RKM4) — apply to clean surfaces and smooth to a finish to restore integrity and prevent future leaks.

• Fast-sealing, weatherproof formula that stops leaks and reduces roof maintenance costs
• Adheres to wet or dry surfaces so crews can repair skylights, gutters and flashings without wait time
• Power Gel Technology prevents sagging, slipping and cracking for long-lasting protection
• 1-gallon capacity covers large repair areas and is economical for contractors and facility teams
• Black, low-profile finish protects roofing penetrations and helps secure rooftop surveillance and security mounts