Roof Cement

Lucas #776 Elite™ Flashing Cement is designed as a super-premium, high-performance flashing cement intended for use on modified bitumen and asphalt roofs. It is also an excellent cold process inter-ply adhesive for SBS modified bitumen single-ply membranes. Cold process adhesives eliminate the need for hazardous torches and hot asphalt kettles. Also an excellent form tie cement for use with rubberized asphalt waterproofing systems. Lucas Elite™ Flashing Cement is the highest quality, most...

Lucas #6500 Universal Flashing Cement is a solvent-based Terpolymer sealant intended for the repair of asphalt, modified bitumen, metal, Kynar, concrete, TPO, PVC, Elvaloy/PVC, Hypalon (CSPE), PIB and EPDM roofs. Extremely strong and elastic. High elongation and tensile strength insure performance under conditions that will cause asphalt-based cements to fail. Unique surface active additives allow application to wet or underwater surfaces. #6500 is the ideal maintenance and repair product for...

Designed for focused roof repair, this compact cartridge of Karnak 19 Flashing Cement provides a precise, resilient seal around details like flashing edges, seams, and vent bases. Its robust yet trowel-friendly formula ensures a dependable barrier—flexible enough to accommodate movement and tough enough to uphold long-term performance even when temperatures fluctuate. Key Features Trowel-ready consistency that applies cleanly and resists slippage on vertical surfaces Forms a tough, waterproof,...

Karnak 19 Ultra Rubberized Flashing Cement is a premium-grade, rubber-reinforced asphalt sealant formulated for both wet and dry surfaces. Packaged in a 10.1 oz tube, it’s ideal for quick and emergency repairs on roofing, chimneys, flashing, and other construction surfaces. This versatile cement offers excellent adhesion and flexibility, even under harsh weather conditions, making it a go-to choice for contractors and maintenance crews alike. Key Features Elastomeric rubberized formulation for...

Lucas #776 Elite™ Flashing Cement is designed as a super-premium, high-performance flashing cement intended for use on modified bitumen and asphalt roofs. It is also an excellent cold process inter-ply adhesive for SBS modified bitumen single-ply membranes. Cold process adhesives eliminate the need for hazardous torches and hot asphalt kettles. Also an excellent form tie cement for use with rubberized asphalt waterproofing systems.Lucas Elite™ Flashing Cement is the highest quality, most...

The Karnak 19 Ultra Rubberized Flashing Cement in a 3-gallon pail is ideal for large-scale or long-term roofing repair projects. Engineered to stick in both wet and dry conditions, this heavy-duty formula seals leaks and penetrations quickly, maintaining flexibility and weather resistance over time. Designed for trowel-grade applications across a variety of roofing materials. Key Features Rubberized elastomeric formulation for superior flexibility and durability Bonds to wet or dry surfaces,...

Karnak 19 Ultra Rubberized Flashing Cement in the 1-gallon pail is a professional-grade, rubber-reinforced asphalt sealant designed for long-lasting emergency and general roof repairs. Its ability to adhere to both wet and dry surfaces makes it ideal for sealing flashing, seams, skylights, and penetrations in demanding weather conditions. Key Features Rubberized elastomeric formulation for superior flexibility and durability Wet or dry application, even sticks under water on the first build...

Lucas #771 Plastic Roof Cement is a Premium Grade trowel-applied Flashing Cement used to install, repair or rebuild roof flashings at parapet walls, gravel stops, stacks, vents, monitors and similar applications. #771 may be used with fiberglass, polyester fabrics or roll roofing for permanent repairs. If repairing modified bitumen please refer to our #776 Elite™ Rubberized Flashing Cement. For repairs to wet or underwater surfaces please refer to our #779 Mastic Roof Cement or to #776....

Lucas #771 Plastic Roof Cement is a Premium Grade trowel-applied Flashing Cement used to install, repair or rebuild roof flashings at parapet walls, gravel stops, stacks, vents, monitors and similar applications. #771 may be used with fiberglass, polyester fabrics or roll roofing for permanent repairs. If repairing modified bitumen please refer to our #776 Elite™ Rubberized Flashing Cement. For repairs to wet or underwater surfaces please refer to our #779 Mastic Roof Cement or to #776. #771...

Lucas #777 Rubberized Flashing Cement is a premium grade trowel applied flashing cement used to Install, Repair, or Rebuild Roof Flashing at parapet walls, gravel stops, stacks, vents, monitors, and similar applications. #777 may be used with Polyester fabric reinforcement for permanent repairs to asphalt and modified bitumen roof. This product may be applied to wet and underwater surfaces APPLICATION The surface must be clean and debris free to be repaired. Apply rubberized flashing cement...

A heavy‑duty, cold‑applied roofing cement designed for emergency use, 155 Amphibikote delivers reliable adhesion to both wet and dry surfaces, making it a top choice for contractors and plant engineers during inclement weather. Its specially formulated blend—a fusion of premium asphalts, mineral fillers, refined solvents, and water-displacing additives—ensures robust waterproofing, pliability, and durability in critical repair situations. Key Features Bonds securely to both wet and dry...

Lucas #777 Rubberized Flashing Cement is a premium grade trowel applied flashing cement used to Install, Repair, or Rebuild Roof Flashing at parapet walls, gravel stops, stacks, vents, monitors, and similar applications. #777 may be used with Polyester fabric reinforcement for permanent repairs to asphalt and modified bitumen roof. This product may be applied to wet and underwater surfaces APPLICATION  The surface must be clean and debris free to be repaired. Apply rubberized flashing...

Karnak 19 Flashing Cement is a high-performance, trowel-grade compound built for sealing joints, edges, and vulnerable roof features. Packaged in a convenient 1-gallon can, it’s ideal for small repairs and precision patching jobs. Its durable formulation stays flexible after curing, resisting cracking and moisture infiltration even on vertical surfaces exposed to harsh conditions. Key Features Heavy trowel-ready consistency applies easily and resists slumping Forms a flexible, resilient,...

Packaged for larger repair jobs, Karnak 19 Flashing Cement in the 3-gallon format is a heavy-duty, trowel-grade compound formulated for long-lasting protection at roof seams, penetrations, and flashings. With its high fiber content and superior adhesion, this asphalt-based cement provides a thick, uniform seal that resists sagging, cracking, and water intrusion—even on vertical surfaces exposed to temperature swings and direct UV. Key Features Thick, trowel-ready consistency that resists...

A rugged, heavy-body flashing compound, Karnak 18 Perfectseal delivers a long-lasting, moisture-resistant seal on vulnerable roof areas. Its dense, trowel-ready formula combines premium asphalts, reinforcing fibers, and refined solvents, offering exceptional adhesion, vertical resistance, and flexibility for both flat and angled surfaces. Exceptionally versatile, it’s perfect for a wide array of quick repairs and complex overlays. Key Features Thick, trowel-ready consistency that resists...

PURPOSE Lucas #774 Flashing Cement is a trowel-applied Flashing Cement used to install,  repair or rebuild roof flashings at parapet walls, gravel stops, stacks, vents, monitors and  similar applications. #774 may be used with fiberglass, polyester fabrics or roll roofing for permanent repairs. If repairing modified bitumen please refer to our #776 Elite Flashing Cement. For repairs to wet or underwater surfaces please refer to our #779 AllWeather Flashing Cement or to...