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- #131
BayBuzzard
Songster
Pics of the chix and coop
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i design roof trusses and recently had a house built with a 2 pitch roof. Anything less than 3 pitch is recommended to go with standing seam metal roofing or a membrane. For something like a chicken coop though, any type of metal roofing (as long as the fasteners are placed on the high parts not the low parts of the roof) would be totally fine.Echoing this - the *minimum* slope from any roofing mfg I am aware of for shingle or metal roofing is 3:12. GAF says you can go less, using specialized materials, including an elastomeric self-stick underlayment and the like (which adds expense). Otherwise, its basically hot mopping asphalt and throwing a bunch of granulated stone at it like a modified bitumen flat roof design like you see on commercial buildings. For cost and effort, I'd come up to 3:12 and metal roof it.