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Thread: Attic remodel

  1. #1
    Join Date
    Feb 2013
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    2

    Default Attic remodel

    Our house was built in the 20's and is a brick twin. We have a great attic space with a walk up stair case and we want to convert the space into a master brm and bath. Our area of concern is the floor joist, the joists are only 5 1/2" deep and 1 3/4" thick, the width between each joist varies from 11-14" anyone have any thoughts whether this would pose a real issue and if so ideas of what could be done to make the space suitable to finish. Thanks for any advice.
    Last edited by Rglukens; 02-17-2013 at 02:58 PM.

  2. #2
    Join Date
    Jul 2010
    Location
    SoCal
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    5,081

    Default Re: Attic remodel

    You'll need 2x8 joists at a minimum (if you have 11" between joists), or 2x10 joists for flooring.

  3. #3
    Join Date
    Dec 2007
    Location
    Tennessee
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    1,381

    Default Re: Attic remodel

    It depends on the span between load bearing walls. Typically houses have a load bearing wall running parallel and almost directly under the ridge beam. If you house is 28' wide, the span would be 14'. On a first floor, this would require 2x10 joists. On a second floor, a 2x8 might be allowed. A 2x6 would only be allowed for a span of 8' or less, unless you put more of them in so that the on center spacing is only 6 to 8".

    There are books and charts for this type of thing. The species of wood used in the joists makes a difference too. a good general contractor should be able to advise you.

  4. #4
    Join Date
    Dec 2010
    Location
    Houston Texas
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    2,358

    Default Re: Attic remodel

    What Keith said plus;

    The charts acceptable to your local building authority are public information. Any decent framing contractor will have them in hand. Your big advantage is the age and density of those old boards which are stronger than modern lumber, so you can stretch the limits of the charts.

  5. #5
    Join Date
    Feb 2013
    Posts
    2

    Default Re: Attic remodel

    We had one contractor tell us that we could just put extra thick plywood down as the sub floor- there will be 3/4" thick by 5 3/4" wide original tongue and groove flooring going on as well- still unsure if that would still do it- we're going to get someone else out too before we move forward.

  6. #6
    Join Date
    Jul 2010
    Location
    SoCal
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    5,081

    Default Re: Attic remodel

    You have to follow your local code, so verify this before you start.

    Another thing is: do you have access to bring full sheets of plywood into the attic?

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