Rodent Proofing & Pest Exclusion
in Richmond, BC
Richmond sits on Lulu Island and Sea Island in the mouth of the Fraser River, which means it occupies some of the lowest-lying land in Metro Vancouver. Much of the municipality sits at or below sea level, held above water by an extensive dyke system. For homeowners with crawlspace foundations — common in the older residential areas of Steveston, Brighouse, and the City Centre neighbourhoods — the water table is a constant consideration. In many areas of Richmond, the water table is within two to four feet of grade year-round, and it rises higher during wet periods. A vapor barrier alone is insufficient in these conditions; active pumping through a properly sized sump system is generally required to keep crawlspaces dry.
Rodents find crawlspaces attractive for the same reasons moisture does well there: it's dark, protected, relatively warm, and — in homes without proper exclusion — easy to get into. Rats (particularly Norway rats, common throughout Surrey and the Fraser Valley) and house mice can squeeze through gaps as small as a quarter-inch. They enter through uncapped foundation vents, gaps around utility penetrations, deteriorated sill plate joints, and even through the condenser lines of HVAC systems if protective screens are missing or corroded.
Our rodent-proofing process starts with a perimeter audit: we walk the exterior of the foundation looking for every possible entry point, then we move inside the crawlspace to identify any gaps that weren't visible from outside. Foundation vents are fitted with heavy-gauge galvanized steel mesh or replaced with sealed covers. Gaps around plumbing and electrical penetrations are packed with stainless steel wool and sealed with caulk or foam. Damaged sill plates are repaired. If the foundation vent openings are large or irregularly shaped, we use pre-formed steel exclusion panels rather than flexible mesh, which rodents can push past over time.
Why Choose Us in Richmond?
- Experience with Richmond'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 Richmond
About Richmond — What We See Here
The soils beneath Richmond residential areas are predominantly marine and riverine sediments — silts and fine sands that are highly compressible and have relatively low bearing capacity. This has implications for structural support: post footings in older crawlspaces may have settled significantly over the life of the structure as the underlying soil compressed. We frequently encounter original wood posts in Richmond crawlspaces that appear to be in reasonable condition but are sitting on footings that have dropped an inch or two below their original elevation, creating floor deflection above. Combining structural correction with encapsulation is common in this community.
Richmond's newer developments built since the 1990s are generally on concrete slab foundations rather than crawlspaces, but there remains a significant inventory of older homes — particularly in Steveston and along the Richmond City Centre area — where crawlspace services are needed. We have extensive experience with the specific drainage and moisture management challenges that Richmond's geography presents.