Why a Veranda Roof Leaks — and Where to Look First
Water appearing under a veranda is rarely the glass failing. In order of likelihood it is a blocked outlet, a gasket, the wall junction, or condensation being mistaken for a leak.
Blocked gutter or downpipe
The most common cause by a distance. Water backs up over the gutter lip and appears at the front beam, which looks alarming but is a five-minute fix.
Gaskets and glazing bars
Gaskets can shrink or lift at ends over time. A run of water tracing a single bar usually points here.
The wall junction
Flashing or wall-plate sealant that has aged shows as damp on the house wall itself rather than a drip in open space.
Condensation
On cold clear nights, moisture forms on the underside of glass and drips as it warms. It appears across the whole roof rather than at one point, and improves with airflow.
Frequently asked questions
Can I seal it myself?
Please do not silicone over gaskets — it traps water and complicates the proper repair.
Does a leak void the warranty?
No. Report it; blocked gutters are maintenance, but genuine product faults are covered by the warranty terms.
Why is it worse in heavy rain only?
That pattern almost always indicates capacity — a partly blocked outlet coping until volume rises.
Could a pane be cracked?
It is possible and easy to see from below; individual panes can be replaced.
Next step
Send a photo of where the water appears and we'll tell you what to check.
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