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A year ago I installed felt vents to aid air flow in my loft. But wife just reported that a cricket bag and car seat have got mouldy.
The roof is covered in Cromar Vent 3 membrane, which should be breathable.
I added 25 Felt Lap Vents and also made about 20 DIY vents with bits of insulation pipe etc, creating gaps where the felt overlaps.
I had to seal a gap in the kitchen extractor pipe - will check this again.
It's a bungalow. Below the loft is: kitchen diner, lounge, shower room, hallway.
There are no vents in the eaves that i can see, and insulation shoved right down into the soffits.
I am thinking then that I should remove all insulation from soffits and put these about every metre each side: Anthracite Grey Plastic Round Eaves Vents
Also, shower room ceiling is old, and I am planning to eventually overboard and skim, but maybe short term it would help to lift the insulation and seal in some foil backed insulation (either kingspan or the foil quilt stuff) to stop moisture going through ceiling. Will make the room wetter through! We have extractor already, but 4 of us use that room. I am building a new bathroom, so by January the shower room will really be just a WC with occasional bath, so much less moisture anyway.
Oh, apparently the light stopped working again - so must be pretty damp up there...
Anything else I need to think about?
Annoying, as last year the vents did seem to help, but obviously not helped enough ...
Some random pics of the build, the vents I put in, .... searching Google photos for more ....
removed insulation from this space, still more right down in the soffit though. Guess I need to take all out?
the DIY vents:
more with bits of PIR insulation:
when the loft was built - lots of insulation went in:
one of the few photos of the soffit / eaves in construction - where it joins old house (no roof felt, no damp, but loads of dust!)
The roof is covered in Cromar Vent 3 membrane, which should be breathable.
I added 25 Felt Lap Vents and also made about 20 DIY vents with bits of insulation pipe etc, creating gaps where the felt overlaps.
I had to seal a gap in the kitchen extractor pipe - will check this again.
It's a bungalow. Below the loft is: kitchen diner, lounge, shower room, hallway.
There are no vents in the eaves that i can see, and insulation shoved right down into the soffits.
I am thinking then that I should remove all insulation from soffits and put these about every metre each side: Anthracite Grey Plastic Round Eaves Vents
Also, shower room ceiling is old, and I am planning to eventually overboard and skim, but maybe short term it would help to lift the insulation and seal in some foil backed insulation (either kingspan or the foil quilt stuff) to stop moisture going through ceiling. Will make the room wetter through! We have extractor already, but 4 of us use that room. I am building a new bathroom, so by January the shower room will really be just a WC with occasional bath, so much less moisture anyway.
Oh, apparently the light stopped working again - so must be pretty damp up there...
Anything else I need to think about?
Annoying, as last year the vents did seem to help, but obviously not helped enough ...
Some random pics of the build, the vents I put in, .... searching Google photos for more ....
removed insulation from this space, still more right down in the soffit though. Guess I need to take all out?
the DIY vents:
more with bits of PIR insulation:
when the loft was built - lots of insulation went in:
one of the few photos of the soffit / eaves in construction - where it joins old house (no roof felt, no damp, but loads of dust!)