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Can see daylight from gap at floor level in b...

Posted by Kate Edgar, on
Re: 1934 bungalow - rear bedroom decorated, walls skimmed and new skirts. Waiting for scotia to be fitted to seal gap between floor (10mm gap left) and skirts. When looking through this gap at floor level realised I could see daylight coming straight through from the external air brick in the outer leaf of the cavity wall. This is causing a draught into that corner of the bedroom which might be ok now but won't be in winter (and could explain why thermal imaging shows this as a cold spot). The same applies to the airbrick 2 meters along. Had raised moisture level readings in these corners of the bedroom walls but eventually gave up trying to find the cause. The airbricks appear to be venting into the cavity wall (no insulation currently) gap and below - possibly sub floor (i.e. timber frame bungalow). Can't move the airbricks but is there anything I can get to duct/redirect the air (coming in from the airbricks) to under the floorboards and between the joists ? Am I right that the air flow should be going below the floorboards? Am I right to be worried in that this could cause serious damp issues. Although the gaps will seen be sealed, due to the constant hammering with winter draughts it is just a temporary fix and I will soon be faced with a more serious damp problem. Is this right? And if so what can I do? Would be glad of any advice at all and thanks a lot in advance.

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