I've been pricing my roofing for my SIPS build.
As it's a SIPS roof, I had been looking for membrane, counter batons running vertical then normal batons so I had the ventilation space. I will be using a slate roof (Cupa heavy 3) in Scotland.
Now one roofer has said Batens are harder than sarking to fix slates on and hence says, I should do the counter batens, but then fit sarking (22mm thick, 150 wide, etc) and that would be better and reduce costs for labour install.
I need to check cost implications but thoughts anyone from a technical (or any other) perspective???