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Old 09-12-16, 07:38 AM   #14
stevehull
Steve Hull
 
Join Date: Dec 2012
Location: hilly, tree covered Arcadia, OK USA
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Mono roof pitch is easy to build, easy to put metal roofing panels on, and provides roof at the minimal sq foot area, but can be a problem in providing shade. A reasonable pitch (3/12) means that a significant southern overhand is wide. And this means that your southern roof line at the eve must be high. Otherwise, you hit your head on it.

Make no mistake, I really like a flat pitched roof - especially if it is a SIP roof. It provides great interior height. But it also means a very high northern wall at the roof high end. I am assuming that the roof will pitch to the ~ south. That means the north aspect of your home will be your high side.

Because SIPS can span a large distance, it is not hard to do a standard gable roof with just SIPS and not needing trusses. A bit more roof surface area (compared to a mono pitch) to cover a given house footprint.

A mono pitch roof is great, but you need to build one VERY tall wall. And that is more expensive than a few more sq feet of roof area.

Assume your low wall is at 10 feet and your home is 24 feet wide. This means the high wall must be 16 feet high. This is based on a standard 3/12 pitch.

Lots of trade offs . . . .


Steve
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