Duram Damp Sealer is a specialized, heavy-duty primer and sealer engineered to treat dampness in interior and exterior masonry. Formulated with a unique resin that reacts with moisture in the substrate, it creates an impenetrable, breathable barrier that prevents damp from reaching the surface while allowing the wall to “breathe” out trapped water vapor.
Key Performance Features
- Active Damp Protection: Specifically designed to block rising and penetrating damp, preventing the peeling, bubbling, and efflorescence (white salts) typically caused by moisture.
- Superior Adhesion to Damp Surfaces: Unlike standard paints, this sealer can be applied to slightly damp masonry, where it “wicks” into the pores to form a powerful mechanical bond.
- Micro-Porous Technology: Creates a “one-way” valve—it stops liquid water from passing through to the paint film but allows moisture vapor to escape, preventing future blistering.
- High-Hide Matte White Finish: Provides a solid white base that masks damp stains and provides an excellent foundation for any decorative topcoat.
Ideal Applications
- Interior Walls: Perfect for bathrooms, kitchens, and basements where condensation or rising damp is a recurring issue.
- Exterior Boundary Walls: Ideal for treating the “damp line” on the base of walls before repainting.
- Problem Areas: Excellent for sealing water-damaged ceilings and walls after a leak has been repaired.
- Substrates: Bonds exceptionally well to cement plaster, concrete, brickwork, and stone.
Product Benefits
- Stain Blocking: Effectively seals in unsightly water and salt stains, ensuring they don’t bleed through your final topcoat.
- Alkali Resistant: Designed to withstand the harsh conditions of masonry without degrading or chalking.
- Long-Term Reliability: Provides a permanent solution to damp issues (when the source of the water has been correctly addressed).
Pro Tip: Before applying, ensure any loose, flaking paint or “fluffy” white salts (efflorescence) are thoroughly removed with a wire brush. For the best results, treat the cleaned area with a 50/50 water and vinegar solution, rinse, and let it dry before sealing.
