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tear off flat roof?

mary-in-toronto

19 years ago

I have 2-4 layers of tar and gravel on my flat roof and plan on replacing with 2-ply bitumen. The existing roof is about 20 years old. Should the existing layers be stripped off to the boards, or can a 2 ply bitumen be torched on top? The house is 85 years old in a cold/hot climate. Thanks for any and all suggestions.

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Comments (2)

ron6519
19 years ago
With an 85 yer old roof I would remove everything down to the sheathing. Any marginal wood should be replaced. You can't see it if you don't expose it.
Ron
mary-in-toronto
Original Author
19 years ago
Thanks for that, Ron. I'm going to follow your advice.
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