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Roofing/pitch for metal roof


Darvault wrote at 2014-05-22 20:09:49
I am from Australia.  Blue scope recommend a minimum pitch of1:12 I have never seen problems with that  The sheets should be laid starting from the side furthest away from the prevailing wind.  There are no standing seems on corrugated iron.  If you were worried about leaks I would put a very thin strip of sealant on the top of the last corrugation before laying the next sheet over it.  I have never heard of this being done.  The only problem I have experienced is at the top of the slope water can run back along the underside of each corrugation and drip off at the first purlin.  To stop this I bend the bottom of the corrugation down about one eighth of an inch with pliers or a piece of metal rod with a slot cot in one end.


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Todd E. Miller


I am available to answer any questions pertaining to residential (or other sloped) metal roofing. I have knowledge of most available products but I like to approach projects from a "needs" basis and analyze them individually. Additionally, I can answer most questions about building ventilation.


I have worked for a manufacturer of residential metal roofing since 1980. I currently serve as President and have been involved with a wide variety of projects of all types across the world.

I am a board member for Metal Construction Association, Metal Roofing Alliance, the local United Way, our church, and our son's school.

Over the years, I have had articles appear in several trade journals including RSI, Remodeling, and Qualified Remodeler.

I have a B.A. in Communications and have also completed three years of training with the E-Myth Academy.

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