Mold Remediation
in Burquitlam, BC

Burquitlam sits at the boundary of Burnaby and Coquitlam, in the Como Lake area — one of the Lower Mainland's older suburban communities, with housing stock dating from the 1950s and 1960s. The neighbourhood has been experiencing rapid densification around the Burquitlam SkyTrain station, with high-rise development replacing some of the older single-family housing. What remains of the original residential stock has crawlspace foundations that are 50 to 70 years old and have had limited or no professional attention in many cases.

Mold in a crawlspace is far more common in the Lower Mainland than most homeowners realize. The combination of high annual rainfall, cool soil temperatures, and the older vented crawlspace designs found throughout Surrey and Langley creates near-ideal conditions for mold spore germination. Once wood framing reaches sustained moisture content above about 19 percent, various mold species — including Stachybotrys (black mold), Cladosporium, and Penicillium — can establish colonies on joists and subfloor sheathing within days. Left unaddressed, those colonies degrade structural wood, release spores into the living space above, and contribute to persistent musty odors and elevated indoor VOC levels.

One point that often surprises homeowners: mold does not go away on its own, and painting over it or applying bleach to crawlspace framing does not constitute proper remediation. Bleach is largely ineffective on porous wood because its active chlorine dissipates before penetrating the surface, leaving the root structure of the mold intact. Proper remediation requires physical removal of the colonized material combined with a professional-grade biocide or encapsulant rated for crawlspace use.