Shed dormer bitumin roof needs work

Old 09-11-08, 02:34 PM
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Question Shed dormer bitumin roof needs work

I have a shed dormer with a bitumin (rubber) roof, maybe 1" in 12 slope, leaking around the chimney and nearby, 14 years old, probably in need of replacement. I think it was installed over a flat seam tin roof. Can I put a new bitumin roof over the whole shebang without any removal? Can a DIY-er do it. With a mastic or a torch, which? Do they still have this material? Does anyone print an instruction book for something this specialized?
Who wants to be my Google on this job?

Tom Teacher (retired)
Old 09-11-08, 02:43 PM
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You probably could do it but if you use a torch you could burn down the neighborhood and if you use cold adhesive it will be all over the shed and you and the pets.
Disclaimers aside first you have to be sure what you have for sure. Rubber is like an inner tube material in bigger sheets while bitumen is more like asphalt in 3' rolls.
Once you know what you have then go to this website and all the details you need are there.
The chimney and edge details are where a diyer will run into issues.

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