From: vze8f3tq@verizon.net (v)
Newsgroups: misc.consumers.house
Subject: Re: Baby Grands and ceramic floors
Date: Wed, 19 Jan 2005 19:28:41 GMT

On 19 Jan 2005 07:25:56 -0800, someone wrote:

>The flooring itself is particle board from the 70's right now. We are
>planning on ripping that up and replacing it with plywood, probably
>3/4" or two layers, one 1/2" and one 1/4" to overlap the seams.
>
1/2 + 1/4 is NOT as strong or stiff as one layer of 3/4.

They make 3/4 T&G just for this purpose.

My house has 2 layers of 5/8, even though the joists are only 16" O.C.
Spec changed at Contractor's request from the 3/4 T&G originally
spec'd.  We also have 2x10 joists even though the house is only 25 ft
from front to back, with a center beam (it is a very stiff house).

Are you sure the house is actually using "particleboard" to span
between joists?  Particleboard (the fine grained stuff) is usually
only a non-structural underlayment.  Chip boards like "Aspenite" can
span, but they differ from particleboard.

 


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