Passivhaus Brickseal – Clear waterproofing for new and old Masonry builds - Single Coat Masonry Protection System
Verified by manufacturer 5 days ago
PassivHaus brickseal masonry protection paste is a deeply penetrating water-repellent paste for the protection of masonry.
Application
Product Application – PassiveHaus Brick Seal
General
Apply in accordance with manufacturer’s written instructions.
PassiveHaus Brick Seal shall be applied to external masonry to provide a breathable, water-repellent barrier while maintaining vapour permeability and the natural appearance of the substrate.
Suitable Substrates
- Clay brick
- Facing brickwork
- Mortar joints
- Sandstone and natural stone
- Concrete block
- Masonry façades
Substrates must be mineral, absorbent and suitable for penetration treatment.
Substrate Preparation
Substrates shall be:
- Clean and dry
- Free from dust, dirt, efflorescence and biological growth
- Free from surface coatings, sealers or contaminants that may inhibit penetration
- Structurally sound and fully cured
Cracked or defective mortar joints should be repaired prior to application.
Environmental Conditions
- Minimum application temperature: +5°C and rising
- Do not apply during rainfall or where rain is forecast before curing
- Avoid application to frozen substrates
- Protect adjacent glazing and surfaces from overspray or contact
Application Method
- Ready to use – do not dilute
- Apply evenly by brush, roller or low-pressure spray
- Ensure full saturation of the masonry surface
- Work from the bottom upwards to avoid streaking
- Avoid ponding or excessive surface build-up
One coat is generally sufficient due to deep penetration technology.
Curing and Performance
The product penetrates into the masonry substrate where it reacts to form a durable, invisible hydrophobic barrier.
Once cured, the treated surface shall:
- Repel driving rain
- Remain vapour permeable
- Maintain original surface appearance
- Reduce water absorption and moisture-related deterioration
Coverage
Coverage rates will vary depending on substrate porosity and profile.
Apply sufficient material to ensure full penetration and effective water repellency.
Description
Intelligent Membranes PassiveHaus Brick Seal – Weatherproof Masonry Protection Cream
Product Description
PassiveHaus Brick Seal is an advanced, liquid-applied masonry protection cream engineered to provide long-lasting weatherproofing and moisture resistance for brick and masonry surfaces, but stays invisible. This ready-to-use cream penetrates deeply into brickwork, mortar, sandstone and concrete to form an invisible, breathable water-repellent barrier that protects walls from driving rain, damp ingress and associated deterioration without altering the appearance of the substrate.
The product cures within the masonry substrate, allowing walls to remain fully vapour-open while reducing moisture-related heat loss and improving overall thermal performance. Its breathable, invisible finish preserves the natural aesthetics of the masonry, making it suitable for both traditional and contemporary building projects, heritage properties and retrofit upgrades.
Key Features and Benefits
- Penetrates deeply into masonry substrates to create a durable, water-repellent barrier
- Invisible finish preserves natural brick and stone appearance
- Breathable formulation allows moisture vapour transfer, preventing trapped moisture
- Improves moisture management and reduces heat loss in walls
- Protects against weathering and damp-related damage
- Suitable for new build, retrofit and conservation projects
- Can be applied by brush, roller or airless spray
Typical Applications
Designed for weatherproofing and moisture protection of:
- Exterior brickwork
- Masonry walls
- Sandstone and stone facades
- Concrete block and paved surfaces
- Mortar joints
Ideal for enhancing façade durability, reducing maintenance risk and improving wall performance in exposed conditions.
Performance Attributes
- Invisible, clear finish — does not alter wall appearance
- Breathable — permits vapour diffusion, avoiding trapped moisture
- Durable protection with typical service life measured in decades
- Water-repellent barrier helps maintain dry wall structure
General information
Color | White Clear |
Finish | Natural |
Material | Other |
Shape | Formless |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Uniclass | |
CAWS | M60/195 Special coating M60/18 Special coating M60/175 Protective coating C42/165 Protective coatings M60/170 Masonry coating E41/520 Surface sealer C42/345 Protective coatings for concrete |
Product range |
Specification data - Concrete sealers
Classification data | |
Category | Deep-penetrating. |
Colour | Clear. Guidance for specification option: Applied white and cures colourless. |
Drying time | 2–4 hours. |
Coverage | 4 m²/kg. |
Sustainability data
Country of material origin | Europe |
Country of product manufacture | Europe |
Material | Other |
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
BIM objects
This BIM object has been authored to meet the requirements of the
Find out more about the
| Platform | Compatible | Version |
|---|---|---|
 Revit | - | 1 |
 IFC | - | 1 |
Literature
Passivhaus Brickseal - Product Sheet
Passivhaus Brickseal - Safety Data Sheet