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Exterior Wall Waterproofing
Specialist exterior wall waterproofing products help protect properties from damp, mould, and moisture-related damage. Formulated for porous surfaces such as brick, concrete, and natural stone, these solutions create a durable water-repellent barrier that still allows the structure to breathe. Suitable for homes, commercial sites, and public buildings, they offer long-term defence against weathering and water ingress. By sealing the building envelope, these coatings and treatments prevent costly repairs caused by freeze-thaw cycles and saturation. Whether refurbishing existing walls or protecting new builds, our waterproofing products offer an effective and professional-grade approach to keeping walls dry and structurally sound.
SikaBond Waterproof PVA
SikaBond Waterproof PVA is a waterproof vinyl acetate polymer especially formulated for exterior use as an adhesive and sealer. Features and Benefits Waterproof formula Internal/external use Primer, sealer and cement admixture Suitable for brickwork, mortar, render, screed and plaster Easy to use and unlike normal PVA it will not...
Owatrol H4 Wood & Stone Waterproof Protection
For horizontal and vertical wood and stone surfaces. Cladding, fences, garden furniture, decks, chalets and more. Water repellent – Protects all exterior wood surfaces and stone against water ingress, mould, pollution, dirt etc. Hydrophobic – repels water. Hybrid system – silicone-free – can be overcoated with any finish without the need...
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Exterior Wall Waterproofing Paints & Sealers for Brick, Stone & Masonry Walls
Exterior wall protection products are designed to form a barrier against water ingress without trapping moisture within the structure. These specialist coatings and treatments are engineered for porous surfaces like masonry, concrete, render, and natural stone, allowing buildings to breathe while staying dry. Whether for homes, commercial units, or industrial structures, these products help defend against the damaging effects of damp, mould, and freeze-thaw cycles.
Applying a waterproofing repair solution is a reliable way to extend the lifespan of exterior walls and avoid costly remedial works. These systems are suitable for both modern construction and heritage restorations, helping to prevent structural weakening, surface erosion, and aesthetic degradation. With options available for new builds or retrofit applications, exterior waterproofing forms a critical part of any building maintenance plan.
Exterior Wall Waterproofing FAQs
Can waterproofing treatments be painted over?
Some waterproofing treatments are paintable, but this depends on the specific product’s formulation. Breathable masonry paints can sometimes be applied over compatible waterproof coatings. However, not all treatments accept paint, especially clear silicone-based water repellents. Always check the product datasheet or contact technical support before overcoating.
Do I need to clean the surface before applying waterproofing?
Yes, surfaces must be clean, dry, and free from loose material, algae, mould, or contaminants. Pressure washing is often recommended, followed by a drying period before application. This ensures the waterproofing treatment adheres correctly and performs as intended. Failure to clean thoroughly can reduce effectiveness or lead to product failure.
Can these products be used on listed or historic buildings?
Yes, many specialist waterproofing products are suitable for heritage sites, provided they allow the substrate to breathe. Lime-based renders, natural stone, and older brickwork often require breathable water-repellent treatments that do not seal moisture inside. It's important to choose a product that complies with conservation standards and seek approval where necessary.
Will waterproofing stop internal damp problems?
Exterior waterproofing can help prevent damp from entering through the walls, but it may not solve existing internal issues. Internal condensation, rising damp, or plumbing leaks require separate investigation. A full damp survey can identify the source of moisture and recommend suitable remedial action alongside external treatments.