How do I install edge restraint on a Vancouver patio?

Edge restraint is absolutely critical for paver installations in Metro Vancouver — without it, pavers will spread and shift over time, especially during the wet season when saturated base materials lose some stability. Proper edge restraint must be installed along every unconfined edge of your patio before laying pavers.

Edge restraint types for Vancouver patios include snap-edge plastic restraint (most common for residential), aluminum L-channel, and steel edge restraint. Snap-edge is the most popular because it's flexible enough to follow curves, strong enough to contain pavers under normal loads, and won't corrode in Vancouver's humid climate. The restraint sits on the compacted base material and gets spiked into place with 10-inch galvanized spikes every 12-18 inches.

Installation starts after your base is compacted but before bedding sand. The top of the edge restraint should sit exactly at the final height of your paver surface — typically 1/8 inch above the compacted base to account for bedding sand thickness. This is critical because if the restraint is too low, pavers will ride over it; too high and you'll see the restraint edge. Use a string line and level to ensure consistent height around the entire perimeter.

Drive spikes through the pre-punched holes at a slight outward angle — about 15 degrees away from the patio area. This angled installation helps the restraint resist the outward pressure from the pavers. In Metro Vancouver's clay-heavy soils (common in Surrey, Richmond, Delta, and Langley), you may need to pre-drill pilot holes for the spikes to prevent the restraint from shifting during installation. The spikes must penetrate at least 6 inches into the compacted base material.

Connect restraint sections with the provided joining plates and overlap joints by at least 6 inches. For curved areas, score the back of snap-edge restraint every 2 inches with a utility knife to allow smooth bending. Never force sharp curves — use multiple gentle bends instead. At corners, cut restraint sections at 45-degree angles for clean joints, or use pre-formed corner pieces if available.

This is professional work for most homeowners. Edge restraint installation requires precision — being off by even 1/4 inch in height affects the entire patio appearance and function. Professional installers use laser levels and have experience judging the exact height relationship between base, bedding sand, and final paver surface. Improperly installed edge restraint is worse than no restraint because it creates an uneven constraint that causes differential settling. For patios over 200 square feet, the precision required and the consequences of mistakes make this a job for experienced interlock contractors.

Need help finding an interlock installer? Vancouver Interlock can match you with experienced contractors from the Vancouver Construction Network who understand proper edge restraint installation for Metro Vancouver conditions.