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Re: 16 ga staples for Roof Sheathing

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Patricia,

You wrote:
>Our firm has recently discovered that many of the builders in our area have
>been substituting 8d common nails at the roof sheathing with 16 ga staples
>(without our approval).  These are not equivalent.  The closest equivalent is
>a 14 ga staple, which is in the ICBO report but no one manufactures.  The
>inspectors don't seem to be catching that they are using staples.  Just
>thought I would let you all know what we have encountered.

When I have contractors that wish to use staples instead of nails  I change
the spacing to 1/2 that of the nails.  Additionaly only 10 - 20% of the staple
crowns can penetrate the skin of the sheathing. 

Hope this helps.

Jay L. Crawford, P.E.