Foundation Repair in Richmond

Richmond's peat and organic clay soils compress continuously under the weight of buildings and roads. Even homes on pile foundations experience slab settlement, grade beam cracking, and perimeter drainage subsidence as the surrounding soil drops away from the structure. This differential movement between pile-supported elements and grade-level elements is Richmond's most distinctive foundation challenge — and it never fully stops.

The concrete grade beams that connect pile caps in Richmond homes were typically not designed to handle significant differential settlement between individual piles. As the soft soils between piles consolidate, grade beams crack at mid-span and at pile cap connections. We see horizontal and diagonal grade beam cracks in nearly every Richmond home over 25 years old. Epoxy injection stabilises the crack; addressing the drainage and void beneath the beam prevents recurrence.

Richmond's water table sits very close to surface grade — in many areas, it's within a metre of the slab. Any failure of the perimeter drainage system results in rapid hydrostatic loading against the basement slab and walls. Basement flooding in Richmond is often not from surface water but from water wicking up through the slab from below. Interior drainage with a properly sized sump is essential.

Original clay or slotted plastic weeping tile in Richmond homes fails faster than in other Metro Vancouver areas because the water table is always present — the tile is always full. Silt and peat fines migrate into the slots and clog the system within 20–30 years. We replace more weeping tile in Richmond per capita than anywhere else we work. A new clean-sock perforated pipe system with a reliable sump is the standard solution.

Basement slabs and garage slabs in Richmond settle as the delta soils beneath them consolidate. This creates voids under the slab that allow further cracking and heaving. Polyurethane foam injection through drilled ports fills the voids and re-levels the slab — often in a single morning — without the disruption and cost of full slab replacement.

Richmond's delta soils are classified as high liquefaction risk in a seismic event. While we can't predict earthquakes, we do ensure that all foundation repairs we perform in Richmond use methods and materials that perform under dynamic loading. Helical piers we install are rated for seismic zones and anchored below the liquefiable layer.