Can you seal permeable pavers or does that defeat the purpose?

You should not seal permeable pavers with standard paver sealer because it defeats the entire purpose of permeable paving — allowing water to infiltrate through the surface. Standard acrylic or polyurethane paver sealers create a film that blocks water penetration, turning your permeable installation into an impermeable surface that sheds water as runoff.

However, there are specialized permeable paver sealers designed specifically for permeable interlocking concrete pavement (PICP) that protect the surface while maintaining infiltration capacity. These products penetrate into the paver surface rather than forming a surface film, providing stain resistance and color enhancement without blocking water flow through the joints and paver structure.

Permeable Paver Maintenance in Metro Vancouver

In Metro Vancouver's wet climate, permeable pavers face unique maintenance challenges. The open-graded aggregate joints (typically 2-8mm crushed stone instead of polymeric sand) can become clogged with organic debris — leaves, moss, algae, and fine sediment. When the joints clog, water cannot infiltrate properly, and you lose the stormwater management benefits that make permeable paving attractive to Metro Vancouver municipalities.

Regular maintenance is essential for permeable pavers to function properly. This includes quarterly removal of leaves and debris, annual power washing or vacuum sweeping of the joints to remove accumulated sediment, and periodic replacement of the jointing aggregate when it becomes too contaminated to drain effectively. Many homeowners underestimate this maintenance requirement when choosing permeable paving.

The specialized permeable sealers available include products from manufacturers like SureBond, Techniseal, and Alliance that are formulated to penetrate concrete without blocking porosity. These sealers can reduce staining from organic matter (common in Vancouver's moist climate), enhance color consistency, and make routine cleaning easier. They typically cost $3-6 per square foot to apply professionally and need reapplication every 3-5 years.

When Permeable Sealing Makes Sense

Consider permeable sealer if your installation experiences heavy organic staining — areas under large deciduous trees, near compost areas, or where vehicles may leak fluids. The sealer makes it easier to clean tannin stains from leaves, moss growth, and algae without scrubbing that could dislodge the jointing aggregate.

Skip sealing if your permeable pavers are functioning well and you're committed to regular maintenance. Many permeable installations in Metro Vancouver perform excellently for 10-15 years without any sealer, provided the joints are kept clean and the aggregate is refreshed periodically.

Professional Application Required

Permeable paver sealing requires professional application because the installer must verify that the sealer maintains adequate infiltration rates after application. ICPI (Interlocking Concrete Pavement Institute) standards require permeable pavement to maintain minimum infiltration rates of 100 inches per hour. A contractor experienced with permeable systems will test infiltration before and after sealing to ensure performance standards are met.

Never use standard paver sealer on permeable pavers — this is a costly mistake that requires complete joint aggregate removal and replacement to restore permeability. If you're unsure whether your pavers are permeable, pour water on the surface — permeable pavers absorb water quickly through the joints, while standard pavers shed water to the edges.

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