EPDM is a great material if installed correctly. I see a lot of problems arising from poorly adheared membranes and detailing work.
A few tips. Make sure you use ample wood adheasive and leave the glue for 10-15 minutes or untill it goes clear and tacky For detail work such as edges and trims, use contact adheasive on both surfaces and again, leave for 10-15 minutes to go tacky before marrying the two together. Pull back small sections of the rubber at a time when gluing down, dont try and do the whole lot at once as it may not go down straight and creases and bubbles will appear during curing.
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