Hi,
As you can see from pics, I have an air vent that is pretty much level with driveway. Driveway was here when we bought the house and I assume they built up to this level. Other pics show damp areas on either side of a wall closest to the air vent. Any thoughts please? Is rain water getting in the vent and causing this damp or is the cold air passing through the vent and causing moisture to condense at these points? What do you suggest? Thanks
Air vent and internal damp
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cudworth78
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Air vent and internal damp
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dewaltdisney
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Air vent and internal damp
Is that the damp course just above the vent? It would suggest that the damp inside is caused by a breach in the damp course as I doubt water ingress through the vent would have caused it. However, I would consider building a protective gully around the vent. Easy enough with bricks or some moulding shuttering and well tamped concrete mix. See https://c8.alamy.com/comp/D2DYTC/leaves ... D2DYTC.jpg. You might want to call a damp firm in to give you an idea and an estimate but be careful, many are charlatans.
DWD
DWD