Should I seal a permeable paver driveway in Vancouver?

No, you should not seal a permeable paver driveway in Vancouver. Sealing permeable pavers defeats their primary purpose by blocking the water infiltration that makes them "permeable" in the first place.

Why Sealing Destroys Permeable Paver Function

Permeable interlocking concrete pavement (PICP) is specifically engineered to allow rainwater to pass through the joints and into the specially designed open-graded aggregate base below. The joints are filled with permeable material (typically small stone chips or open-graded sand) rather than polymeric sand, creating pathways for water infiltration. When you apply sealer to the paver surface and joints, you create an impermeable barrier that blocks water penetration — essentially converting your permeable driveway into a standard sealed surface that sheds water as runoff.

This is particularly counterproductive in Metro Vancouver, where permeable paving is often installed specifically to manage the region's heavy rainfall (over 1,200mm annually) and reduce stormwater runoff. Many Metro Vancouver municipalities — including Vancouver, Surrey, and Richmond — offer stormwater fee reductions or green infrastructure incentives for permeable paving installations precisely because they reduce the burden on municipal storm drain systems during heavy rain events.

Metro Vancouver's Climate Makes Sealing Even More Problematic

Vancouver's persistent moisture and high humidity levels (60-80% year-round) mean that any water trapped beneath a sealed surface has difficulty evaporating. If you seal permeable pavers, water that would normally infiltrate through the system instead pools on the surface and eventually finds its way underneath through microscopic cracks or worn areas in the sealer. This trapped moisture can cause efflorescence, freeze-thaw damage in winter, and creates ideal conditions for mold and algae growth beneath the sealer film.

Proper Permeable Paver Maintenance Instead

Rather than sealing, maintain your permeable driveway through regular cleaning to prevent the joints from clogging with debris, leaves, and sediment. Vacuum or pressure wash the surface 2-3 times per year, paying special attention to removing organic matter that could block water infiltration. If joints become compacted or clogged, they may need to be cleaned out and refilled with fresh permeable jointing material every 3-5 years.

When Professional Assessment is Needed

If you're concerned about staining, wear, or surface durability on your permeable pavers, consult with an ICPI-certified installer who understands permeable paving systems. They can assess whether your installation is functioning properly and recommend appropriate maintenance techniques that preserve the permeable characteristics while addressing your surface concerns.