About 18 months ago at the corner edge of my flat roof a bubble appeared under the felt. Since the roof was still under a 10 year warranty the roofing company replaced a section of it. You can see it in the photos below where the felt looks lighter in an oblong piece.
All was good until...
We might have a problem with a small portion of the extension flat roof on our property. The best way to describle it is it seems to have a bubble in it near the edge. The photos below hopefully make it clearer, although in reall life the bubble looks more raised than it comes across in the...