Should I use a film-forming or penetrating sealer in Vancouver?

For Metro Vancouver's wet climate, penetrating sealers are generally the better choice over film-forming sealers. Penetrating sealers soak into the paver surface and allow moisture vapor to escape, while film-forming sealers create a surface coating that can trap moisture underneath and fail in Vancouver's persistent humidity and rainfall.

Penetrating sealers work better in Vancouver's marine climate because they allow the pavers to "breathe." With Metro Vancouver receiving over 1,200mm of annual rainfall and maintaining 60-80% humidity year-round, moisture is constantly present in and around paver installations. A penetrating sealer soaks 2-4mm into the concrete paver surface, providing stain protection and color enhancement while allowing water vapor to escape through the paver. This prevents the moisture-related failures that plague film-forming sealers in wet climates.

Film-forming sealers create a thin plastic-like coating on the paver surface that can look glossy and dramatic initially, but they're problematic in Vancouver's conditions. When moisture gets underneath the film (which it inevitably does through microscopic pores or minor surface damage), it becomes trapped and causes the sealer to bubble, peel, or develop a milky white appearance called blushing. Film-forming sealers also become slippery when wet — a serious safety concern during Vancouver's October-to-March rainy season, especially on walkways, steps, and pool decks.

The best penetrating sealers for Metro Vancouver include solvent-based siloxane or silane products from manufacturers like SureCrete, Foundation Armor, RadonSeal, or Prosoco. These typically cost $0.75-$1.50 per square foot for materials and provide 5-8 years of protection before reapplication. Water-based penetrating sealers are more environmentally friendly but generally don't last as long in Vancouver's challenging conditions — expect 3-5 years before reapplication is needed.

Application timing is critical in Vancouver. Penetrating sealers need 24-48 hours of dry weather after application to properly cure and bond with the paver surface. Plan sealer application for late spring through early fall (May through September) when you can get reliable dry weather windows. Never apply sealer to wet pavers or when rain is forecast within 48 hours — the sealer won't penetrate properly and may cause surface hazing.

Clean and prepare pavers thoroughly before sealing. Remove all moss, algae, efflorescence (white powdery residue), and stains using a pressure washer and appropriate cleaners. Ensure polymeric sand joints are in good condition — replenish if needed and allow 7-10 days for polymeric sand to fully cure before sealing. New pavers should weather for 6-12 months before sealing to allow efflorescence to naturally fade.

Professional application is recommended for best results. Experienced contractors have the right equipment (low-pressure sprayers, microfiber rollers), know proper coverage rates, and can ensure even application without over-application or missed spots. A professionally applied penetrating sealer typically costs $2-$4 per square foot including materials and labor.

Need help finding an interlock sealing professional? Vancouver Interlock can match you with experienced contractors who understand Metro Vancouver's climate challenges and use appropriate sealer products for long-lasting protection.