Building Sealants

Check out our impressive range of Damp Sealants for your next job

Stop water, damp or stubborn household stains from damaging your brickwork, stone and plaster work surfaces with our high-performance building sealants. Boasting the best formulas in the market, our water seal and damp seal products will give you exactly what you need from a quality building sealant, giving your project longer-lasting protection against expensive water damage and keeping your customers satisfied every time.

Thompsons Water Seal penetrates deeply into porous structures to stop water from infiltrating, while at the same allowing the surface to continue to breath. One coat of Thompsons Water Seal will keep the moisture out for longer than standard water proofers while preserving the natural aspect of the material.

Do you need a damp seal product to permanently cover damp, water and household stains? Try Thompson's Stain Block – an all in one formula that can be applied directly on damp materials to quickly stop stains from damaging surfaces. Stain block products are also available in aerosols form, including Ronseal's quick drying damp seal that lets you crack on with the rest of the day’s tasks.  

Make sure to check out our wider sealants and adhesives range as well to help with your projects.

Get Building Sealants at Trade-Only Prices

Check out which Selco branch is closest to you using our branch finder and visit today to get your building sealants. Save time and use our Click & Collect service and we’ll have your order ready in just 30 minutes. Or if you need a free bulky delivery, we can arrange that too.

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