Damp in under stairs boiler cupboard

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21 Aug 2010
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Hi,

We've just bought our first house and this forum has been extremely useful for DIY tips in the first few weeks, so thanks!

However, have come up against a problem that I haven't seen an answer to so far.

We have our boiler at the front of the property. We're in the lower ground flat so the storage cupboard is under the stairs to the property above us. It seems that the boiler is making the cupboard very humid when it is running. There is a ventilation brick in the side wall of the stairs which ventilates to the front of our property, but it isn't sufficient to keep the cupboard dry, as the moisture has come through the wall next to the boiler and caused a significant area of damp which has then blown the plaster.

What would you recommend I do here, is it possible that the boiler is venting hot, wet air directly against the brick wall and then into our property? Or is the problem simply of insufficient ventilation? Don't want to get a heating engineer around if the problem is ventilation, nor a builder round to add some ventilation if the problem is the location of the boiler.

Happy to give more info or pics if that would be helpful.

Thanks in advance!

Nick
 
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You really do need to get some photos of the problems posted there are none so far.

Include photo's of the boiler flue and any air bricks nearby.

Also include photo's of the pipework around the Boiler.
 

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