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Entry pointsModerate risk

Can Rats Get Through Roof Tiles?

Written by PestMan Editorial TeamTechnical review pendingPublished Updated

Quick answer

Rats cannot usually push through intact, well-bedded tiles, but they readily use gaps where tiles meet gutters, fascias and ridge capping, cracked or slipped tiles, and deteriorated mortar or pointing. Young rats need a gap of only about 12–15 mm. Older tiled roofs, and roofs with vegetation touching them, are particularly vulnerable.

Why this happens

Tiled roofs have many joints. The gap between the lowest row of tiles and the gutter is a common entry point, as are ridge caps where pointing has cracked.

Rats also gnaw to enlarge small openings in softer materials such as timber, plastic and foam.

What you can do

  • Have a roofer inspect for cracked or slipped tiles and failing ridge pointing.
  • Fit eaves or gutter guards and bird-proofing strips designed to seal tile gaps.
  • Cut back overhanging trees and vines.
  • Look for rub marks or droppings on gutters and fascias to identify entry points.

What not to do

  • Do not walk on tiled roofs without appropriate safety precautions.

When professional help may be needed

Sealing roof entry points is often a job for a roofer working with a pest professional, particularly on two-storey homes.

Rats

Introduced rodents that live alongside people, nest in roofs, walls and gardens and gnaw through building materials and wiring. Roof rats are the most common household rat in many Australian cities.

Species mentioned

Roof Rat (Black Rat)

Rattus rattus

An agile climbing rat that nests in roof voids, trees and dense vegetation. The rat most often heard in ceilings in Brisbane and other coastal cities.

Guide

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Sources & further reading

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