Passivhaus Brickseal - Spray / Roller / Brush applied Weatherproof Masonry Damp Proof Paint

Passivhaus Brickseal – Breathable Masonry Water Repellent

Invisible, breathable water protection for brick and masonry – improve energy efficiency and safeguard your walls for over 20 years.

Passivhaus Brickseal is a high-performance, cream-based water-repellent treatment for masonry. Designed to protect brick, concrete, sandstone, and mortar, it penetrates deep into the substrate, creating an invisible barrier against driving rain and moisture while allowing the wall to remain fully breathable.

Unlike paints or surface coatings, Brickseal cures within the masonry itself, ensuring long-term weather protection without altering the natural look of your walls.

By keeping walls dry, Brickseal helps improve thermal efficiency, reduces heat loss, and protects buildings from damp-related damage — making it an ideal solution for retrofit upgrades, heritage properties, and new-build projects.

Key Benefits:

• Invisible protection – dries clear, preserving the natural appearance of brickwork
• Breathable – maintains vapour permeability to prevent trapped moisture
• Energy saving – dry walls retain heat better, reducing energy loss
• Durable – long-lasting protection for 20+ years
• Versatile – suitable for brick, sandstone, concrete, paving, and mortar

Passivhaus Brickseal is the smart choice for protecting masonry from the elements, enhancing building performance, and extending the life of your property — whether it’s a modern home, a retrofit project, or a listed building.

Brickseal is the answer to penetrating damp. If you are not yet sure which of the three damps you have, our damp proofing page works through telling rising, penetrating and condensation damp apart before a product is chosen.

Quality assurance: Download the free Installation & QA Record sign-off sheet (IM-QA-11) for this product.