Crawlspace Encapsulation
in Burnaby, BC
Burnaby's topography ranges from the relatively flat areas along the Burrard Inlet waterfront through the mid-slope residential neighbourhoods of Capitol Hill and Burnaby Mountain to the lower-lying districts around Edmonds and Metrotown. The variability in elevation and soil conditions means crawlspace challenges vary considerably across the city. Properties on Burnaby Mountain and Capitol Hill often deal with steep-site drainage challenges, where surface water moving downslope through clay soils is channelled toward downhill foundation walls. Properties near Deer Lake and in the lower Edmonds area face a higher seasonal water table.
Crawlspace encapsulation is one of the most effective investments a homeowner in Surrey or the broader Lower Mainland can make. The process involves covering the crawlspace floor and walls with a continuous, heavy-duty polyethylene vapor barrier — typically 12-mil or 20-mil reinforced poly — then sealing every seam, penetration, and vent opening with industrial-grade tape and adhesive. The result is a fully conditioned environment that is physically isolated from ground moisture and the damp Pacific Northwest soil beneath your home.
The installation process begins with a thorough cleanup — removing old fiberglass batt insulation (which absorbs moisture and harbors mold), clearing any debris, and treating visible mold colonies. Technicians then install the vapor barrier across the ground, lapping it up the walls and piers, and sealing it to the stem wall with adhesive and mechanical fasteners. All vents are closed and sealed from the inside. Depending on the space, we may also install a commercial-grade dehumidifier calibrated to maintain relative humidity around 50 to 55 percent throughout the year.
Why Choose Us in Burnaby?
- Experience with Burnaby's specific soil and drainage conditions
- Custom-designed systems — not one-size-fits-all packages
- Fully licensed, insured, and WCB-covered technicians
- Written report with photos after every inspection
- Workmanship guarantee on all completed work
Request Service in Burnaby
About Burnaby — What We See Here
Many of Burnaby's established residential neighbourhoods were built in the post-war era through the early 1970s, and a significant proportion of this housing stock has crawlspace foundations. These homes are now old enough that original structural wood — posts, beams, sill plates — has had decades of exposure to whatever moisture conditions were present before the first renovations or repairs were done. In our experience, Burnaby homes from this era are among the most likely to have multiple compounding issues: deteriorated original posts, collapsed insulation, and mold on the subfloor underside that has gone unnoticed for years.
The good news for Burnaby homeowners is that the soil conditions in most of the city, while clay-heavy, respond well to proper perimeter drainage improvements. Combined with encapsulation, these interventions tend to produce very effective results. We also note that Burnaby has an active real estate market, and crawlspace conditions are increasingly part of pre-sale and pre-purchase inspection discussions — a clean, documented, encapsulated crawlspace is a measurable asset in the market.