Fixing centres for roofing OSB

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Hi

Can someone help me please with a simple question?

At what spacing should I fix the 8 x 4 sheets of 18mm OSB to my garage roof?

The joists are at 400mm centres across the roof, so that's a given in one direction, but what about spacing along the joists?

The total area is approx 6m x 6.5m

Many thanks

Dave
 
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200 to 300mm centres at edges, and 400 to 500mm centres elsewhere.

More if in a high winds area

3mm annular grooved, flat headed nails, minimum 2.5x the board thickness long, and minimum 9mm in from board edges
 
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Thanks Foxhole

Does that mean stagger across the roof with them or lay in a staggered pattern? :LOL:

Dave
 

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