I embarked on replacing the old and rusty metal roof on my mother-in-law's summer cottage and plan to lay a felt roof.
Now, it's not particularly advanced, but there are some minor complications that I haven't given much thought to.
The cottage is L-shaped and they have built a sunroom in the corner, so to speak.
The roof is made of multiwall polycarbonate and it is placed inserted between the underlying paper and the actual metal roof, with some form of metal laid down towards the plastic so that water will run from the cottage roof, down onto the multiwall polycarbonate, and further down towards the gutters.
The only problem is that when it is even slightly windy, the water travels against the slope, under the metal piece and towards the edge, resulting in drips inside. They probably have too little slope.
Now, when I remove the metal roof, the multiwall polycarbonate will sit on top of the old felt roof and all rainwater will then run into the sunroom.
So, now I'm considering how to avoid this happening without having to damage the sunroom.
My spontaneous thought is to lay the roofing felt about 20cm or so out onto the multiwall polycarbonate and glue it with a substantial amount of roofing felt adhesive.
Does this sound like a sensible solution or are there other options I haven't considered?
