3/4" Hardwood stapled over chipboard / particle board

[Danny Ferguson]

Originally Posted by Danny Ferguson Kman, why do they want the screws to go into the floor joists?

Sorry, I wanted to say "Why do they NOT want screws in the floor joists"?

[Kman]

Here is a link to an article about installing a second layer of subfloor. It's directed toward a tile installer, but works for anything else.



http://www.tile-assn.com/tileletter/...oeste-0604.pdf

[Curt Durand]

Danny, you want the subfloor and underlay to stay together and tying them to a joist just ups the chances that movement in the joists will create trouble.

[Danny Ferguson]

Thanks Curt.