Extension was build in 2010, we bought the house in 2013. Certificate to say extension passed but no info about the builder. I have pulled up designs from council database to show the problem.
1950s semi with single story extension to the rear, pitched roof.
Small leak appeared a few months ago, slight damp patch which has started to spread. Follwing the recent heavy rain this is much more widespread and has started to drip into the kitchen. The water is showing underneath (about 2 feet lower) from where the extension joins the existing property. This is marked in red on the attached diagrams.
I have had a few roofers out, with vastly differing opinions. 1 thinks it is coming from the flat roof of the garage, dropping down and moving along a beam. £50 fix but need it to be dry to flame the felt. Put temporary material on which has made no real difference.
Second roofer thought there was no soakers underneath the tiles on the roof, stripped the top 3 tiles away and reinstalled, checked lead etc. Now thinks as this didn't work the only answer is a new roof at £2600.
My thoughts are now perhaps it is from the waste pipe or a seal around it, you can see from the images that it passes through the area that is leaking. Don't think its a leak from bathroom as it only happens when raining and never following shower, bath or flushing.
Any ideas?
1950s semi with single story extension to the rear, pitched roof.
Small leak appeared a few months ago, slight damp patch which has started to spread. Follwing the recent heavy rain this is much more widespread and has started to drip into the kitchen. The water is showing underneath (about 2 feet lower) from where the extension joins the existing property. This is marked in red on the attached diagrams.
I have had a few roofers out, with vastly differing opinions. 1 thinks it is coming from the flat roof of the garage, dropping down and moving along a beam. £50 fix but need it to be dry to flame the felt. Put temporary material on which has made no real difference.
Second roofer thought there was no soakers underneath the tiles on the roof, stripped the top 3 tiles away and reinstalled, checked lead etc. Now thinks as this didn't work the only answer is a new roof at £2600.
My thoughts are now perhaps it is from the waste pipe or a seal around it, you can see from the images that it passes through the area that is leaking. Don't think its a leak from bathroom as it only happens when raining and never following shower, bath or flushing.
Any ideas?
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