Choose a sealer rated for vehicle traffic, abrasion resistance, and weather exposure. For many domestic driveways, a durable acrylic sealer is a common choice, while heavier-duty polyurethane or epoxy systems are better suited to high-wear areas when the surface is correctly prepared.

The surface should be clean, sound, and fully dry. A simple check is the plastic sheet test: tape a clear sheet to the surface for 24 hours. If condensation or darkening appears underneath, the concrete needs more time to dry.

A penetrating sealer soaks into the concrete and helps repel water and salts with minimal change to appearance. A surface sealer forms a film that can add sheen and colour enhancement but is more sensitive to moisture and typically requires more ongoing maintenance.

Cloudiness is often caused by moisture trapped beneath the sealer, applying the product too thickly, or sealing just before rain or heavy dew. Some haze may clear as it dries, but persistent whitening may require removal of the affected layer and correct reapplication.

It can, particularly if the sealer leaves a glossy film on smooth concrete. If slip resistance is important, consider using a penetrating sealer or a system that supports an anti-slip additive in the final coat.

This depends on the sealer type and level of wear. Penetrating sealers often last longer with little visible change, while film-forming finishes may need more frequent top-ups. Re-sealing is usually required when water no longer beads or the finish becomes patchy.

Both methods can be suitable. Rollers are commonly used for acrylic sealers, while low-pressure sprayers are often preferred for penetrating sealers. Thin, even coats are essential, as over-application is a common cause of failure.

A specialist supplier can help match the sealer to your surface type, desired finish, and traffic level. For product-specific guidance, Trade Supplies UK is an example of a supplier that can advise on suitable sealers for patios, driveways, and garages.