Common ways rats get into an attic
Roof coves and eave gaps
Openings along the roofline can provide a route into attic spaces. These areas may be difficult to see from the ground and should be evaluated as part of the exterior inspection.
Vents and screening
Damaged, loose or inadequately protected vents can leave an opening into the structure. Proofing materials need to block rodents while still allowing the vent to perform its intended function.
Utility penetrations
Air-conditioning lines, plumbing, cable, electrical and other penetrations can leave gaps where materials pass through walls, siding or foundations.
Construction transitions
Gaps can develop where siding meets foundation, where additions meet the original structure, around garage transitions or where different materials come together. These small details are easy to miss during a quick inspection.
Why finding every accessible entry point matters
One repaired hole may not be the only hole
A home can have more than one vulnerable opening. Sealing only the most obvious location may leave another route available.
The attic may not show where the rat entered
Rodents can travel through wall cavities, garage spaces and connected voids before reaching the attic. The inspection needs to follow the building envelope, not just the final location where activity is heard.
Materials should match the location
We commonly use durable 1/4-inch galvanized mesh for many rodent-proofing applications and select other materials when the construction detail requires a different approach.
What happens after the entry points are sealed?
Trapping addresses rodents already inside
Proofing stops accessible routes from remaining open, while traps are used to address rodents that were inside before the work was completed.
Follow-up matters
Activity may not stop immediately. We recommend regular trap checks during the initial resolution period so progress can be monitored until the activity has stopped.
Cleanup and restoration come after the access problem is addressed
If the attic contains contaminated insulation, damaged ductwork or rodent debris, those items can be evaluated once the entry and trapping plan is in place.
