im building an extension and am planning to install velux windows into the roof but im concerned about the air gap after i install the window , how will the air flow over this section of roof if the window is installed ?? any ideas anybody
velux window air gap
- Thread starter runci21
- Start date
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done by a builder before I bought this house
we had this problem when installing a horizontal bank of four velux windows.
it was remedied using a breathable membrane.
it was remedied using a breathable membrane.
My Building Inspector let me get away with it. He said that as I had ventialtion at the top and bottom of the pitch there would still be some air movement above and below the veulx's - even though there wasn't a continuous air path.
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My extension is cross battened, double felted using breathable membrane and it has a couple of Velux windows in it. This type of construction was done as per local BC guidance.
[Edit] Ooops - forgot to mention there are no additional vents anywhere above or below the velux windows.
[Edit] Ooops - forgot to mention there are no additional vents anywhere above or below the velux windows.
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