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Best way to join GRP to felt roof

Postby Dmoblay » Tue Apr 13, 2021 4:00 pm

My felt garage roof needs replacing. I’m planning to lay a fibreglass roof this weekend. On one side is a neighbours flat garage roof which is felt.

what’s the easiest method for creating a watertight seal between the fibreglass and felt roof?
Dmoblay
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Postby stoneyboy » Wed Apr 14, 2021 8:57 pm

Hi dmoblay
Your chances of making a direct join are pretty remote due to the material and expansion rate differences. You could try using a shallow glazing bar which would allow you to seal both materials and then fit a cover for protection. This will allow both sides to expand and contract independently.
Regards S
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