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Roofing

Gap where roof / felt meets UPVC weatherboard - dormer flat roof in loft conversion

Anonymous user 28/02/2024 - 3.00 PM

We have just had a loft conversion, with a flat roof/dormer. The dormer is complete however where the roof/felt meets the UPVC weatherboard, there is about a 1 inch gap with bare timber. The felt looks fine and there is a small lip where the felt folds back up underneath the roof. My concern is that the roof is not entirely weather tight. I can't see anything similar on any other flat roofs. Is this normal for a flat roof?

Are you a tradesperson and able to answer this question?

1 Answer

Anonymous user

Jnr, The timber should be treated, sealed around the edges nearest the dormer cheeks with silicone, then clad with a pvc or suitable timber slip (Cedar). Seal round the perimeters of this slip then also. By the way, if there is only a 1 inch solid timber soffit, then how are you ventilating the roof void? Des.
Answered23 January 2014
1