Concrete Sealers

Concrete Sealers for Commercial & Industrial Surfaces

Concrete sealers are used to reduce water absorption, staining, freeze-thaw damage, and chemical attack on concrete floors, decks, walls, and structures — contributing to extended service life when correctly selected and applied. Canopus Supply stocks penetrating silane/siloxane sealers and film-forming systems suited for commercial and industrial applications across British Columbia.

Sealer selection depends on substrate porosity, exposure conditions, and whether a coating will be applied over top. Confirm product suitability against the current TDS, SDS, and project specification before ordering.

System Characteristics

• Penetrating Sealers — Silane/siloxane formulas that chemically react with concrete to reduce water absorption without significantly altering surface appearance; performance depends on substrate porosity and application method.
• Freeze-Thaw Considerations — Reducing water absorption may help minimise freeze-thaw spalling and salt scaling on exposed concrete; confirm suitability for specific exposure conditions against the TDS.
• Film-Forming Sealers — Provide a surface barrier with resistance to oils, fuels, and common industrial contaminants; confirm chemical compatibility and recoat requirements against the TDS.
• Maintenance Considerations — Sealed surfaces may be easier to clean and maintain; actual maintenance requirements depend on traffic, exposure, and application conditions.

Typical Applications

• Exposed concrete floors and slabs
• Exterior concrete walkways, plazas, and driveways
• Parkade decks and ramps
• Concrete walls, columns, and retaining structures
• Pre-treatment prior to coating application

Product Selection Support

Contact Canopus Supply for product information and technical data sheets before ordering. Confirm sealer compatibility with any planned coating system before application.

Canopus Supply Inc. — Industrial Coatings & Waterproofing Specialists, Metro Vancouver & BC

Contractor FAQ — Concrete Sealers

What is the difference between a penetrating sealer and a film-forming sealer?

Penetrating sealers — typically silane or siloxane-based — chemically react with the concrete matrix to reduce water absorption without forming a visible surface film. Film-forming sealers create a surface barrier that provides resistance to oils, fuels, and surface contaminants. Product selection depends on substrate porosity, exposure conditions, and whether a coating system will be applied over top. Confirm suitability against the current TDS and project specification before ordering.

Can a concrete sealer be applied before an epoxy or polyaspartic coating?

Some penetrating sealers are incompatible with coating systems applied over top, as they can reduce adhesion. If a coating is planned, confirm sealer compatibility with the coating system manufacturer before applying any sealer. In many cases, the coating system primer is the appropriate first layer rather than a standalone sealer. Confirm the full system sequence against the current TDS and project specification before ordering.

Are concrete sealers suitable for exterior and exposed surfaces?

Penetrating silane/siloxane sealers are commonly used on exterior concrete surfaces including parkade decks, walkways, and retaining walls to reduce water absorption and freeze-thaw damage. Confirm exterior suitability, application temperature requirements, and expected service life against the current TDS before use.

How often does a concrete sealer need to be reapplied?

Reapplication frequency depends on the sealer type, substrate porosity, traffic exposure, and environmental conditions. Confirm reapplication intervals and maintenance requirements against the current TDS and manufacturer documentation for the specific product used.

Can contractors pick up concrete sealers in North Vancouver?

Contractor pickup is available from Canopus Supply in North Vancouver. Contact the store before placing volume orders to confirm stock, pickup timing and product suitability for your project.