Single storey extension with warm roof require vented soffits?
- Thread starter xdrive
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I phoned the building inspector. He said it wasn't required because of breathable felt.
Confused now
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We always fit OFV's to supplement ventilation.
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What's OFV?
Over-fascia vents
Warm roof does NOT require vents.
The enclosed void of a warm pitched roof does not require to be ventilated. ... Rather than actively ventilating to the outside, entrapped water vapour diffuses through the vapour permeable underlay; negating the need for forming cavities or voids below the underlay
Google it as well.
The enclosed void of a warm pitched roof does not require to be ventilated. ... Rather than actively ventilating to the outside, entrapped water vapour diffuses through the vapour permeable underlay; negating the need for forming cavities or voids below the underlay
Google it as well.
Subject reads: Single storey extension with warm roof require vented soffits?
Agree, does not need venting if it has breathable membrane, but they can also aid vent with tile vents.
What is the roof build-up from inside face of plasterboard to outside face of tiles?
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