Revisions log for question
How to lay OSB in the rafters without purlins?

Disperse the doubts. I have two questions:

1. When installing OSB in the rafters without purlins (step 62.5 cm on the axes. 57.5 inner, 50x200), how best to lay it? Along the rafters or across?

2. Is it necessary to make a gap between the boards or place them flush?

• roof
• osb