Appropriate Fastener for Underlayment

Old 07-29-07, 08:02 PM
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Appropriate Fastener for Underlayment

I'm getting ready to install a nailed, 5/8" engineered maple floor in my 1969 era home I recently bought. This will be my first nailed floor install after doing a couple different types of floating laminates.

The subfloor is 1" x 6" T&G planks on joists 4 feet on center. The original floor was all carpet so the house has 3/8" underlayment grade particle board from 1969.

A local installer has recommended I replace that particle board with 3/8" CD exterior grade plywood to reduce the chance of squeaks developing later. It's A LOT OF WORK because that old particle board is down with thousands of staples.

But once I've got it pulled up, what type of fastener should I use to put down the new plywood? Nails or staples? What type? What about the nailing pattern?

Any thoughts or suggestions are welcome! And thanks in advanced!
Old 07-29-07, 10:46 PM
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I use a 7/16ths crown staple and space the fasteners every four inches on the perimeter and every six inches in the field.

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