CEM 805 Active Swellable Mastic: Robust Sealing for Construction Joints and Pipe Penetration
CEM 805 Active Swellable Mastic is a one-component, polyurethane-based, solvent-free hydroswelling sealing agent. This product is designed to provide superior sealing for construction joints and pipe penetration, and it cures and swells upon exposure to moisture.
Within 24 to 36 hours, CEM 805 Active Swellable Mastic typically solidifies. Please note that curing time is influenced by temperature and humidity conditions. For instance, higher relative humidity and temperature will reduce the curing time.
Key Features
- Solvent-free formulation, making it safe for a range of applications.
- Compatible with a variety of materials such as concrete, PVC, HDPE, and steel.
- Can be utilized as a first line filler for cracks and voids, even on slightly humid, smooth or rough surfaces.
- Capable of expanding up to 200% of its original volume.
- Extremely flexible, adapting to the irregular surface of the substrate.
- Application is easy with a standard caulking gun.
- Designed to outlast the typical lifespan of a structure.
- Exhibits good all-round chemical resistance.
- WRAS Approved – Suitable for use in contact with potable water.
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