Roof Leaks Perth: Finding the Cause & Getting It Fixed

Perth gets most of its rainfall between May and August. Roof leaks often appear mid-storm, when the last thing you can do is get on the roof. Here's how to deal with a roof leak — both immediately and for a permanent fix.

Common Causes of Roof Leaks in Perth

Cracked or broken tiles: Concrete and terracotta tiles crack over time from UV, temperature extremes, and foot traffic (TV antenna installers walking on the roof are a common culprit). Failed or missing pointing: The ridge cap mortar (pointing) on tiled roofs cracks with age, allowing water under the ridge. Rusted or failed valley iron: The metal flashing in roof valleys corrodes over time, especially in coastal Perth suburbs. Failed flashings: Around skylights, chimneys, vent pipes, and where the roof meets a wall. Silicone sealant around flashings dries out and cracks. Blocked gutters: Overflowing gutters force water back under the eaves.

What to Do During a Leak

Place buckets to protect flooring. Push a towel into the ceiling cavity to direct water to the bucket rather than letting it spread. Take photos for your insurer. Once it stops raining, safely assess from outside (binoculars work well). Never get on a wet roof — the risk is not worth it.

Getting it Fixed

Minor repairs (replacing a few tiles, re-pointing ridge caps, silicone flashings): $200–$800. Valley iron replacement: $800–$2,500. More extensive storm damage: contact your home insurer first.