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New Jersey
home inspection NJ home
inspectors perform
Certified New Jersey home
inspections in NJ.
EXCESSIVE ROOF OR SUB FLOOR
SHEATHING SPAN:
Plywood sheathing usually has a stamp on its
bottom side which indicates the maximum span
allowable for the particular piece. Almost
universal is the 16/32 stamp on 1/2"
plywood or Orientated Strand Board (OSB)
sheathing. This indicates up to 32" span
(length wise) for most light weight loads.
1" x 6" roof sheathing should not be
spanned more than 24" under most
circumstances. In older construction 1" x
6" roof sheathing will often be spanned up
to 32". If the over-span proves to be a
problem, such as when sagging or draped roofing
or sagging draped floors are noted, rafters or
joists may need to be added. It may also suffice
to install blocking between the rafters or
joists also. Contact a General Contractor for
additional information and assistance.
The above information was provided by TWI Systems Copyright 1995-2005 1-800-553-5660 |