Foundation Repair in Burnaby

Homes in older Burnaby neighbourhoods like Willingdon Heights and Capitol Hill were often built on rubble stone or brick footings at minimal depth — sometimes as shallow as 18 inches below grade. As Burnaby's clay soils consolidate under decades of load, these foundations settle unevenly. Differential settlement shows up as stair-step cracks, racked door frames, and sloping floors. Underpinning with concrete piers or helical piers extends the foundation to competent bearing.

Homes on Burnaby's slopes — particularly Capitol Hill, South Slope, and the Burnaby Mountain foothills — experience significant lateral soil pressure and hillside drainage loading. The upslope retaining wall of these foundations carries both hydrostatic pressure in heavy rain and freeze-thaw cycles in winter. Inward-bowing walls, horizontal cracks at mid-height, and corner separation are the most common symptoms.

The Still Creek watershed cuts through Burnaby's industrial and residential zones. Homes near this corridor sit on softer alluvial and fill soils rather than the glacial till of the uplands. Settlement is ongoing and affects foundations through differential movement — one corner of the home sinks while the rest remains stable, creating diagonal cracks at window corners and out-of-plumb walls.

Burnaby's large stock of 1970s and 1980s homes — particularly split-levels and two-storey colonials in the Edmonds and South Slope areas — was built with perforated plastic weeping tile that has since collapsed or clogged with silt and root intrusion. When the drainage fails, hydrostatic pressure builds behind foundation walls and forces water through every crack and joint. Replacement is the only lasting fix.

Many Burnaby homes from the 1950s–1970s were built with concrete block (CMU) foundations rather than poured concrete. Block walls are inherently weaker in both bending and tension, and Burnaby's clay soils apply significant pressure. Stair-step cracking along mortar joints is almost universal in these homes by age 40+. Carbon fibre straps arrest further movement; tuck-pointing seals the joints against water entry.

Burnaby's high rainfall and clay soils mean that homes with interior drainage systems depend entirely on their sump pump. Pump failures — from power outages, float switch failure, or simply wear — cause rapid basement flooding. We install battery backup systems and check valves as part of every interior drainage job, and we see a significant number of emergency calls after major rainstorms.