H2O Guard 290 is a professional-grade brick and masonry sealer designed to provide long-term water repellent protection for porous substrates. This breathable, water-based silane–siloxane brick sealer penetrates deeply into brickwork, concrete, and stone to reduce water ingress, salt attack, and efflorescence without altering the natural appearance.
Ideal for exterior brick waterproofing applications, H2O Guard 290 helps protect brick walls, facades, and masonry surfaces from long-term moisture damage. Suitable for both residential and remedial use, it acts as a high-performance masonry water repellent sealer that maintains vapour permeability while extending the service life of the substrate.
• Water-Based Formula: Eco-friendly, VOC-free, safe to use.
• Invisible Protection: Maintains the natural colour and texture of brick, block, and stone.
• Breathable Barrier: Repels liquid water but allows vapour transmission.
• Durability: Resists weathering, efflorescence, and salt attack.
• Low Maintenance: Prevents moss growth, dirt retention, and reduces cleaning costs.
• External waterproofing of brickwork, blockwork, concrete, and stone.
• Treatment of rising and salt damp in existing structures.
• Reduces sandstone decay and protects against low pH precipitation.
• Prevents moss growth, dirt retention, and white salt spotting on facades.
• Suitable for rooftops, retaining walls, pavers, and external facades.
• Appearance: Milky liquid in container, dries clear and invisible on surfaces
• Coverage: 0.5 – 3 m² per kg (depending on substrate porosity)
• Application Temperature: 5°C – 45°C
• Drying Time: Tack-free in approx. 120 minutes, hard dry in 240 minutes
• Shelf Life: Up to 12 months (unopened containers, stored correctly)
• Packaging: 20L and 5L container drums
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