Sealer Selection Guide

Block paving requires a sealer that penetrates the joints and surface to bind sand, reduce movement and protect against staining. Acrylic and polyurethane-based sealers are commonly used depending on the desired finish and durability. The condition of the paving and whether it has been previously sealed should also be considered.

Concrete surfaces require sealers that can penetrate and protect against water ingress, staining and surface wear. Penetrating sealers provide a natural finish, while acrylic sealers can enhance colour and provide a “wet look” effect.

Not always. Roof surfaces require sealers designed for higher exposure to weather, UV and water runoff. Patio and driveway sealers are typically not suitable for roof applications.

Yes. Porous surfaces such as concrete and natural stone absorb more sealer, while dense or previously sealed surfaces may limit penetration. This affects both product choice and coverage.

If the existing sealer is failing or incompatible, it must be removed. Applying new sealer over a blocked or unstable surface will reduce performance.

Incorrect selection can lead to poor penetration, patchy appearance, reduced durability or complete failure of the system.

Driveways and patios are exposed to rain, UV, foot traffic and vehicles, while roofs are exposed to more extreme weather conditions. The sealer must be selected based on its ability to withstand these factors.

Yes. Driveways exposed to vehicle traffic require durable sealers that can resist wear, oil staining and surface movement.

Patios typically require sealers that protect against weathering, staining and biological growth. The choice depends on the material and desired finish.

Yes. UV exposure can degrade sealers over time, particularly lower-quality products. UV-resistant systems provide longer-lasting protection.

In some cases, yes. Surfaces that retain moisture may require breathable sealers to prevent trapping moisture beneath the surface.

The sealer may degrade prematurely, lose effectiveness or fail to protect the surface properly.

Penetrating sealers absorb into the substrate and provide protection without significantly changing appearance. Surface sealers form a film on top and can enhance colour or provide a gloss or wet-look finish.

Wet look sealers enhance the natural colour of the surface, giving a darker, richer appearance. They are commonly used on block paving and concrete.

Yes, depending on the product. Some sealers are designed to be invisible, while others enhance colour or add sheen.

Consider the substrate, level of exposure and desired finish. For example, high-traffic areas may require more durable film-forming sealers, while natural finishes may benefit from penetrating systems.

Durability depends on the product, surface and exposure conditions. Higher-performance systems typically last longer but may require more preparation.

Choosing based on appearance alone without considering substrate condition and performance requirements. This often leads to poor durability and the need for reapplication.