Rodent Proofing & Pest Exclusion
in New Westminster, BC
New Westminster is British Columbia's oldest incorporated city and has one of the highest concentrations of pre-war residential housing in Metro Vancouver. The Queen's Park neighbourhood in particular has exceptional heritage housing stock — Victorian and Edwardian homes on full perimeter foundations, many with crawlspaces that were original construction in the early 1900s. When we work in these homes, we are often the fourth or fifth generation of tradespeople to address crawlspace conditions, and the accumulated history of previous repairs — good and bad — is part of what we need to understand before planning a current project.
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 New Westminster?
- Experience with New Westminster'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 New Westminster
About New Westminster — What We See Here
New Westminster's hillside topography, with much of the residential development on slopes above the Fraser River, creates drainage challenges similar to other hillside communities in the region. The older storm drainage infrastructure in established neighbourhoods has limited capacity by modern standards, and during heavy rainfall events, surface water can overwhelm curb drains and flow toward residential foundations. The clay-over-till soil profile common on the slopes holds water at the surface and creates hydrostatic pressure against foundation walls.
The city's older homes frequently have original fir framing that, when dry, is dense and hard — actually more resistant to rot than modern hem-fir in many cases. However, the moisture conditions in unencapsulated crawlspaces over the decades can compromise even dense old-growth fir over time. We pay particular attention to the condition of original sill plates, which are often the first structural element to show moisture damage because they sit closest to the ground. Where sill plates are solid, the adjacent framing is usually in better shape than the exterior appearance of the crawlspace might suggest.