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material choice: metal vs fiberglass vs Ondura

4K views 3 replies 2 participants last post by  SHIFT 
#1 ·
I'm building a shed with a gambrel roof with dormers and a flared out eave. I was originally planning on using asphalt shingles but decided to switch to metal due to a relatively low cost delta and the hope that I could avoid having fasteners stick through the roof decking. Now I've come across a few other options that look attractive because of light weight and ease of cutting: Ondura and fiberglass panels.

My question is what are the pros and cons of Ondura vs fiberglass vs metal?

I'll try to upload a pic to help you see my plan soon.
 
#2 ·
All of those are still going to have to have fastners which will still go though the sheathing.

Most metal roofing does not use sheathing under it.

Why is the fastners sticking out an issue?
 
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