Technorubber Water Block Mastic is a highly flexible, butyl-based sealing compound used in roofing and waterproofing systems to prevent water migration.
Technorubber Water Block Mastic is a highly flexible, butyl-based sealing compound used in roofing and waterproofing systems to prevent water migration. It is specifically designed to seal membrane terminations, lap joints, and penetrations, creating a watertight barrier that blocks moisture from entering or traveling beneath the membrane.
Water Block Mastic is made from high-quality butyl rubber compounds, which provide excellent sealing performance and compatibility with various waterproofing membranes and construction materials.
The mastic remains soft and pliable over time, allowing it to accommodate building movement, vibration, and thermal expansion without cracking or losing its sealing ability.
The material is designed to block and prevent water migration, even in areas where water may try to travel beneath the membrane.
Water Block Mastic is typically supplied in cartridges or formable strips and can be easily applied using a caulking gun, allowing for precise and efficient installation.
The mastic works well with membrane termination bars, flashing details, and lap joints, making it suitable for use in various roofing and waterproofing assemblies.
By sealing critical points such as membrane edges, penetrations, and terminations, the mastic effectively blocks water from entering the roofing or waterproofing system.
It strengthens vulnerable areas of the membrane system, helping ensure long-term watertight protection.
Because the mastic remains flexible, it can absorb structural movement and temperature changes without compromising the seal.
