Flue extension leak
Flue extension leak
In the recent torrential rain, I had water coming leaking through my boiler (Veissman 050 W). I am pretty sure it is not from the boiler as there was no pressure change and it started and stopped in time with the heavy rain, and there is no evidence of any leak above the boiler itself. I think it is probably coming through this boiler flue extension as the end does not have a rain deflector and is pointing slightly upwards. It hasn’t noticeably leaked other times it has been raining recently. I suppose there is some possibility it is from the area where it goes through the wall or some other part of the pipe.
The exit is 330cm from ground/roof level. Would probably have a service done at the same time as the fix
Thanks!
Hi kc,
It sounds like rainwater is entering through your boiler flue due to the absence of a rain deflector and the slight upward angle of the flue pipe. To address this:
Suggested Fix:
1. Rain Deflector Installation: Install a rain deflector or terminal guard at the end of the flue pipe. This will help prevent water from entering during heavy rain while still allowing proper ventilation.
2. Flue Angle Adjustment: The flue pipe should ideally be angled slightly downward to prevent rainwater from entering. Adjust its position if possible to create a gentle downward slope.
3. Seal Wall Penetration: Check and reseal the area where the flue passes through the wall. Over time, sealants can deteriorate, allowing water to seep in.
4. Service the Boiler: Since you’ll already be addressing this issue, a boiler service is a good idea to ensure that no internal components were affected and that everything is functioning optimally.
Having both the leak fixed and the service done together will save you time and ensure the issue is fully resolved.
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