Crawlspace Encapsulation
in Salmon River, BC

The Salmon River area in eastern Langley Township is rural agricultural land with scattered residential development, centred around the Salmon River itself and the network of drainage ditches and creeks that manage water flow across the floodplain. Properties in this area are predominantly on larger rural lots, and the crawlspace challenges are shaped by the agricultural character of the land — rich, organic soils with high moisture-holding capacity, periodic flooding from the river system, and drainage infrastructure designed primarily for agricultural use.

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.