Stopgap F77 Epoxy Damp Proof Membrane

Stopgap F77 – One-Coat High-Performance Waterproof Surface Membrane

Stopgap F77 is a solvent-free, two-part epoxy resin system engineered to create a robust waterproof barrier in a single application. It effectively blocks residual construction moisture and rising damp—allowing for the early installation of floorcoverings and keeping fast-track construction schedules on track.

Key Benefits:

• Superior Moisture Protection: Seals up to 98% relative humidity (RH) with just one coat, making it suitable for environments with high moisture levels.

• Visual Assurance: Its distinctive black pigment ensures accurate and even application coverage.

• Underfloor Heating Compatible: Can be applied directly over UFH screeds, providing consistent performance even with ambient RH up to 90%, at a coverage rate of just 1.8 m² per kg.

• Efficiency Matters: Working time of approximately 30 minutes, with full cure achieved in around 3 hours—ideal for quick turnarounds.

• Wide Coverage: Delivers approximately 1.8 m²/kg in high RH or UFH scenarios, and up to 2.5 m²/kg where RH is lower, maximizing cost-efficiency.

Applications Notes:

Stopgap F77 is perfect for commercial and residential projects where moisture control is critical—such as refurbishments, new builds, conservatories, and spaces prone to humidity or water ingress.