Urethane Sealants

Urethane roof sealants and mastics are thick, fluid-applied repair materials used to seal vulnerable areas on commercial roofs. They are commonly used around seams, fasteners, penetrations, flashing, curbs, cracks, and other details where leaks are more likely to occur.

Roof coatings are applied across large roof areas, while urethane sealants and mastics are used for targeted repairs and detail work. They are typically thicker and more buildable than coatings, allowing them to fill gaps, reinforce problem areas, and create a durable waterproof seal.

Urethane sealants and mastics are commonly used around flashing details, roof penetrations, seams, joints, curbs, drains, fasteners, terminations, and transitions. These areas often experience movement, stress, or water intrusion and usually require extra reinforcement before coating.

Yes, urethane sealants and mastics can help stop roof leaks when the leak source is properly identified and repaired. They are designed to seal cracks, gaps, seams, and other vulnerable details, but they should not be used to cover saturated insulation or major roof damage.

Urethane sealants and mastics offer strong adhesion, flexibility, toughness, and waterproofing performance. They are a good choice for detail work where movement, foot traffic, thermal cycling, or surface stress may require a more durable repair material.

Yes, urethane mastics are often used with polyester fabric or similar reinforcement to strengthen seams, joints, transitions, and other detail areas. Reinforcement helps bridge gaps, handle movement, and improve the durability of the repair.

Yes, many urethane sealants and mastics can be coated over once they are properly cured. This allows repaired areas to tie into a larger roof restoration system and helps create a more uniform, protected roof surface.