Sloping flat roof

[bluebaron]

I want to build a flat roof 8m x 5m.

I want the fall to be on the 8m section and because of the span can’t run the rafters in that direction. If I run the rafters in the Direction of the 5 meter rafters how do I get the fall on the roof to run against the rafters I’m planning a flat roof warm construction OSB PIR OSB EDPM.

Hope that’s clear.

 

[bluebaron]

At the risk of answering my own question I’ve found information taht says I can run the furring strips at 90’ to the rafters but over 8m might be a stretch? Anyone seen 8m furring strips that arn’t stupid money?

It there an alternative?

 

[freddiemercurystwin]

You just need two sets of the 4m firrings, it's just that half of them will be sat on some consistently thick battens.

 

[bluebaron]

Oh yeah I guess that makes sense, must be tired! Lol.