Roof Leak After Heavy Rain
A leak that only appears in heavy or wind-driven rain often points to a specific weak spot.
Possible causes
- Gutters or valleys overwhelmed and overflowing
- Lifted slates letting in driven rain
- Flashing that only fails when water runs sideways
- Undersized or blocked downpipes
Warning signs
- Intermittent stains that come and go
- Water running down internal walls
- Overflowing gutters visible during rain
How it's usually fixed
- Clearing or upgrading gutters and downpipes
- Repairing valleys and flashing
- Securing lifted slates
When to call a roofer
Note when and where the leak appears — it helps us trace it — and book a visit.
This page describes possible causes only. We can't diagnose your roof without inspecting it.