We have recently had a thermal heat loss survey conducted.
It revealed that none of our new triple-glazed Velux windows are airtight. They are leaking between the frame and the window (I.e. where they open) as well as at the inner seals. At the coldest point there was a 5 degree difference in temperature!
We are waiting for a Velux technician to come out and inspect, but that won't be until January.
We've tried sealing them with draught proofing strips but it's not terribly effective.
Does anyone have any good ideas for more effective temporary solutions? Airtight insulating tape looks like a good option but for the fact that it forms a permanent bond!
Thanks