Crawlspace Encapsulation
in Vancouver, BC
Vancouver's crawlspace work is dominated by the city's older residential housing stock — particularly in East Vancouver, Hastings-Sunrise, Grandview-Woodland, and Renfrew-Collingwood, where pre-war and early post-war homes on full perimeter foundations (many of them with crawlspaces rather than full basements) are common. These homes were built in an era when crawlspace ventilation was the design standard, and many have had little or no maintenance to the subfloor environment in the decades since. When we inspect crawlspaces in homes of this vintage, we routinely encounter original wood framing with significant moisture damage, corroded metal connectors, and mold colonies that have been growing unchecked for years.
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 Vancouver?
- Experience with Vancouver'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 Vancouver
About Vancouver — What We See Here
Vancouver's position on the coast, combined with its urban heat island effect and the particular microclimates of different neighbourhoods — the wetter east side, the relatively drier West Side near the Strait — means moisture management strategies need to account for local rainfall exposure. Properties in the Kits, Mount Pleasant, and Commercial Drive areas, for instance, may see different average wet-season humidity levels than homes in the Dunbar or Kerrisdale neighbourhoods, and we calibrate dehumidifier sizing and vapor barrier specifications accordingly.
Heritage homes in Shaughnessy, First Shaughnessy, and parts of the West Side present particular considerations. Many of these properties have original craftsmanship and architectural details that homeowners and the City want to preserve. Our work in these homes focuses on correcting the underlying moisture conditions without disturbing original structural elements any more than necessary, using minimally invasive access where possible and restoring affected areas to their pre-remediation condition.