sub floor

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orna

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Is it true that we need to replace the particle board sub-floor in order to install a hard floor? ply wood sub floor will be much better?
 
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Particle board will not hold on to a fastener all that readily when under foot daily.:)
 
Sub floor bracing is provided to transfer sideways loads down to the ground.
Bracing needs to be provided at all levels to work. Imagine a building in a wind that had bracing to resist the wind at the roof and wall levels, but not at the sub floor level.
 
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