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Leak in new roof

5 replies

Zitouna · 21/01/2020 09:02

We had our whole house renovated just under a year ago. We had a loft extension - and as part of this, a new area of flat roofing with a skylight over the stairs. There have been various issues and we are no longer in contact with the original builders.

The roof is leaking at the corner of the raised skylight. All the roofers we’ve had to come and look at it have said that the new roof (a polymer? I think) has been shoddily applied, is peeling in lots of different places, and will cause lots of problems. They suggest that polymer isn’t a good material to use. They want to felt the whole of the flat area of roof.

My internet research suggests that polymer is ok in itself if properly applied - I would rather spend less on having problem areas patched. I don’t like the look of felting (tho admittedly you wouldn’t really see it!). I feel like the roofers are trying to up sell us to the thing that they do. Architect for original project says they saw no problems with original roof install (but I doubt they looked closely at roof).

Any suggestions for what we should do?

OP posts:
Zitouna · 21/01/2020 21:02

Hopeful bump...

OP posts:
Celeriacacaca · 21/01/2020 21:14

We had a similar problem and it turned out the building company had installed the polymer upside down- it had come loose and was letting water in! When our roofer went up he took photos which showed many patches where there were issues so we ended up reroofing the whole area again. So annoying as we paid extra to the original builder who clearly didn't have a clue.

Zitouna · 22/01/2020 19:44

@Celeriacacaca how annoying! Did you have polymer redone or did you go with something else?

OP posts:
Celeriacacaca · 22/01/2020 20:11

We ditched the polymer and went with the felt. The pointing all had to be redone too as this was poorly done. All in all a spectacular waste of time and money the first time round but now watertight.

asomodai · 25/01/2020 21:26

Felt really is the batter material. I wouldn't bother with anything else for a flat roof.

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