Roof pitch

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Marley Mendip go to 15 degrees.
Apologies, although I would add a disclaimer.(y)
Fine then. Max rafter length 10m and 4" headlap. I doubt the OP (or many people) will have a problem complying with that though!

It was a nice surprise to see the revised specs, I must say.
I would bet that at 15 degrees the roof would need to be un-complex to apply. Valleys and such would be a problem also.
 
Nothing is mentioned in the specs I've seen about uncomplex roofs.

The Centurion's spec only limits you to uncomplex roofs below 12.5 degrees.
 
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hi, i would not recommend going lower than 20 degrees. i would much rather a roof was 25 plus.
check how low the skylight is allowed to go!
 

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