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Pavers should be resealed at least once every three to five years. Pavers that are exposed to excessive foot traffic, wear and tear, or volatile weather may benefit from being resealed more frequently. Consider resealing pavers whenever you notice stains or discoloration beginning to form.

Not all pavers need sealing, but they do provide an added layer of protection and durability. If pavers are not sealed (or sealed properly) they’re more likely to stain, fade, and show signs of weathering. All of these issue could result in weaker pavers and the need to replace them sooner.

The most obvious disadvantage of permeable paving is that the cost is typically higher compared to non-permeable concrete, pavers, or asphalt methods. Also, the porous material can get clogged with dirt and debris, requiring cleaning and power washing more frequently than standard paving materials and methods. Although permeable paving is not ideal for highways, airports, and other surfaces supporting heavy traffic and machinery, it is suitable for regular residential driveways.

Professional installers often include a deep layer of crushed gravel under permeable pavers to allow more runoff to soak through into the soil below. Many installations will include multiple layers of gravel, with coarser aggregate at the base and finer aggregate that sits on top of that bottom layer. Above the gravel, you’ll often find coarse sand that helps reduce paver shifting over time. Some permeable paver designs include a water collection system set into the gravel layer to route runoff to a safe area for disposal.