Paving Sealers, Jointing & Treatments

Paving sealers, jointing compounds and surface treatments protect external paved surfaces from the elements, prevent weed growth and keep block paving, patios, paths and driveways in serviceable condition for longer. Whether you are finishing a new block paved driveway, sealing an existing patio or renovating a surface affected by algae and green growth, this range covers the products needed for a complete paving treatment programme.

Block paving and patio sealers

A paving sealer or patio sealant forms a protective film over the surface of block paving, concrete flags, sandstone paving slabs and patio paving, creating a hydrophobic barrier that resists moisture, oil and fuel stains and inhibits weed and algae growth. Sealers also stabilise the jointing sand between block paving units, reducing joint disturbance and extending the life of the installation.

The best sealer for paving slabs depends on the required finish and the application. The Sika Block Paving Sealer provides a durable, colour-enhancing finish for block paved driveways and patios, resisting oil and water ingress. The Sika Path and Patio Sealer is formulated for paths, patios and mixed external surfaces where a protective coating is required without a high-gloss finish. Both products are suitable for residential and commercial applications.

There are some considerations before sealing paving. Paving sealer must be applied to a clean, completely dry surface, sealing over damp, dirty or contaminated paving traps moisture and contaminants beneath the film and will cause premature failure. All algae, moss, staining and residual sand should be removed before application. Where paving has been previously sealed, compatibility should be checked before applying a new product. A paving sealer applied correctly to a well-prepared surface will typically last three to five years before re-application is required, depending on traffic, weathering and exposure.

Jointing compounds for block paving and slabs

Modern paving jointing compounds have largely replaced traditional sand and cement pointing in block paving and slab installations. Sand and cement joints crack and shrink as they cure, allow weed growth and are difficult to repair cleanly. Brush-in jointing compounds such as Sika FastFix are a more practical alternative, they are brushed dry into the joints, set firm on contact with moisture and do not shrink, crack or wash out. They also resist weed germination more effectively than kiln-dried sand alone.

Sika FastFix All Weather is a self-setting paving jointing compound suitable for use in all weather conditions, including in the rain. As a slab jointing compound it can be used for all standard 450mm x 450mm and 400mm x 400mm paving joints, as well as block paving joints from 3mm to 20mm wide. It is available in a range of colours to complement different paving types, including Deep Grey, Dark Buff, Charcoal, Stone and Flint, in 14kg and 15kg packs.

Paving cleaners and surface treatments

Before sealing or re-jointing, paving surfaces should be thoroughly cleaned to remove algae, moss, mould, fungal growth and general surface contamination. The Everbuild Patio Wizard is a concentrated paving cleaner that kills algae, green growth, mould and fungus on paths, patios, driveways and other hard surfaces. It is suitable for use on block paving, concrete flags, natural stone and most hard landscaping surfaces, and provides residual protection to slow the return of biological growth.

Cleaning paving before sealing is not optional. A paving sealer applied over algae, moss or surface contamination will seal the problem in rather than protecting the surface, leading to delamination and early failure of the sealant. A clean, dry surface is the most important preparation step for any paving sealing or treatment programme.

Choosing the right product

For block paved driveways and patios, use Sika FastFix as a block paving jointing compound and Sika Block Paving Sealer to protect and finish. For paths and mixed patio surfaces, the Sika Path and Patio Sealer is the appropriate sealant. Where paving is affected by algae, moss or green growth, treat with Everbuild Patio Wizard before sealing or re-jointing.

Why Choose Construction Supplies UK for Paving Sealers, Jointing and Treatments

Sealers, jointing compounds and cleaners in one place: From Sika FastFix jointing compound in five colours to block paving and patio sealers and Everbuild Patio Wizard, we stock everything needed for a complete paving treatment programme.

Trusted industry brands: Shop Sika and Everbuild, two of the leading names in construction chemicals for external paving applications.

Competitive trade prices: Paving sealers, jointing compounds and treatments at competitive trade prices with no minimum order value.

Fast UK-wide delivery: Reliable nationwide delivery with free shipping on orders over £300.

Expert support when you need it: Our team can help you choose the right products for your project. Contact us at sales@constructionsuppliesuk.co.uk or call 03300 55 32 02.