Crawlspace Encapsulation
in Coquitlam Center, BC
The Coquitlam Centre area — surrounding the regional shopping mall and extending into the adjacent residential streets — has a mix of housing types from the 1970s and 1980s that represent the period when this part of Coquitlam transitioned from low-density suburban to more urban character. Single-family homes on crawlspace foundations from this era are common in the streets surrounding the commercial core.
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 Coquitlam Center?
- Experience with Coquitlam Center'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 Coquitlam Center
About Coquitlam Center — What We See Here
The soil conditions in central Coquitlam are predominantly clay-loam, similar to other mid-slope communities in the Tri-Cities area. Drainage is better than in the flatland communities to the south but still prone to surface water accumulation after heavy rain events. We work regularly in this area on encapsulation and mold remediation projects for homes that have accumulated moisture damage over the decades of their existence.