Crawlspace Encapsulation
in Port Moody, BC
Port Moody occupies the eastern tip of Burrard Inlet, with residential development largely on the steep slopes rising above the waterfront. This geography creates a very specific drainage situation: water moving downslope through the thin glacially-derived soils reaches the residential areas quickly during heavy rain events, and properties on the lower slopes can experience significant lateral water pressure against uphill foundation walls. The marine proximity adds ambient humidity even on dry days, and the inlet's position means marine fog is a common morning condition through much of the year.
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 Port Moody?
- Experience with Port Moody'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 Port Moody
About Port Moody — What We See Here
Homes in the established College Park and Glenayre neighbourhoods are primarily from the 1960s and 1970s, with crawlspace foundations that have dealt with these conditions for decades. The sloped sites in these areas create natural opportunities for gravity drainage improvements that we can take advantage of — a properly graded perimeter drain routed to daylight on the low side of the property can be very effective here without requiring a sump pump. We assess each site's specific topography to determine whether gravity or mechanical drainage is the right approach.
The newer developments around Newport Village and the inlet waterfront area are generally more modern construction on concrete slabs, so crawlspace work in Port Moody tends to be concentrated in the older hillside neighbourhoods. Heritage-era homes near St. Johns Street and the original townsite occasionally have older construction techniques that need to be understood before any crawlspace intervention is planned.