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  1. #1
    Join Date
    Oct 2011
    Posts
    20

    Default Subfloor Not installed perpendicular to joists

    Bathroom was gutted. Existing subfloor was 1/2" plywood so I requested my handyman to purchase grade BC 3/4" inch plywood to lay over the 1/2" plywood to prepare for tiling. Rather than lay the one sheet with the grain perpendicular to the joists he cut the board in half with the grain running parallel and nailed them into the joists.

    Do I need to rip these out and have him do it over again?
    Last edited by Mauiblue; 03-07-2012 at 05:53 AM. Reason: clarification

  2. #2
    Join Date
    Mar 2009
    Posts
    1,387

    Default Re: Subfloor Not installed perpendicular to joists

    No but this may allow cracking of the tile an or grout. Is there enough room to allow you to install an tile underlayment on top perpendicular to the joists to stiffen the floor?
    Any an all of my comments are just my opinion and not to be confused with facts.

  3. #3
    Join Date
    Jul 2010
    Location
    SoCal
    Posts
    5,436

    Default Re: Subfloor Not installed perpendicular to joists

    Just a reminder:

    Make sure that your existing joists will be able to support the added weight you intend to put on them.

  4. #4
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,503

    Default Re: Subfloor Not installed perpendicular to joists

    I tried to post the link but it failed.

    In the John Bridge Tile Forum library there is a section on plywood. Read the bits about face grain orientation and the next one by Frank Woerst (sp) about the installation of the second layer.

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