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    rbackmann's Avatar
    rbackmann Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Nov 13, 2009, 12:40 PM
    OSB subfloor
    I am laying hardwood. I had Particle board am replacing with OSB. I laid 3 sheets with cuts. Then I saw the THIS SIDE DOWN pinted on the boards. :mad::o

    My 3 borads are shiny side up. Is this going to cause a problem or should I remove and re-attach.

    I am working on a remodel and need to move stuff around to do this and live?
    EPMiller's Avatar
    EPMiller Posts: 624, Reputation: 37
    Senior Member
    		  
    #2

    Nov 13, 2009, 07:21 PM

    I was told that "this side down" only really applies to roofing where traction for walking is a safety issue. It works the same otherwise.

    EPM
    ballengerb1's Avatar
    ballengerb1 Posts: 27,378, Reputation: 2280
    Home Repair & Remodeling Expert
    		  
    #3

    Nov 14, 2009, 10:22 AM

    Best to check with the manufacturer since THIS SIDE DOWN is part of their subfloor installation instruction for most brands I have seen. http://osbguide.tecotested.com/pdfs/en/el813.pdf OSB is a bit touchy and edges should not touch each other because this stuff expands and contracts with humidity.
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