Rodent Proofing & Pest Exclusion
in North Delta, BC

North Delta occupies the hillside terrain rising from Scott Road toward the Annieville Dyke and the agricultural floodplain beyond. This hillside position gives North Delta significantly better natural drainage than the flat areas of Ladner, but the slope introduces its own challenges — particularly the lateral movement of water through clay-over-till soil profiles that is common on the mid-slope residential lots. Water arrives from the uphill side, moves horizontally through the soil, and concentrates against the uphill foundation walls of homes in mid-slope positions.

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.