Revisions log for Answer #2054
This is the answer to the question How to lay OSB in the rafters without purlins?
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2022‑09‑09 07:45
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When laying without purlins, the thickness of the osb should be bigger. So it is cheaper and more convenient to lay osb on the purlins.
Lay with a gap of 3 mm – summer, 5 mm – autumn, winter, spring.
Purlins are laid across the rafters, along the rafters are nailed counter-battens, which makes the air gap.