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Old 04-08-2007, 09:27 AM   #1
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properly nailing down 1/2" osb sheeting over lath


i am preparing to reroof my house that currently has wood shake shingles.i am removing the wood shake down to the lath.my question is how to nail down osb sheeting properly. the building dept says nail edges every 6" and 12" in the field. my problem is the wood lath or slats on the roof are 1" x6" with 6" spaces in between.this means that some of the edge nails would hit in between the 3/4" thick slats creating a 3/4" gap between osb sheeting and roof truss.how do roofers handle this problem. anybody's advice on this question would be greatly appreciated.

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Old 04-08-2007, 12:20 PM   #2
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properly nailing down 1/2" osb sheeting over lath


We cut each sheet of 1/2" exterior cdx to size to vertically align with the rafters. Then we snap chalk lines vertically to correspond with each interim rafter.

Each perimeter side edge gets nailed ever 6" oc and the inner rafter lines get nailed 12" oc.

Ed

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Old 04-08-2007, 12:49 PM   #3
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properly nailing down 1/2" osb sheeting over lath


do yourself a big favour and dont use OSB. 5/8" CDX plywood is best for roofs.

RooferJim
www.jbennetteroofing.com
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