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RSJ needed in attic?

  • 27-04-2014 2:13pm
    #1
    Dublimax
    Registered Users, Registered Users 2 Posts: 30 ✭


    Hi there,

    I am looking to floor the attic. The attic is not big enough for a room hence will only be used for storage. Size is ~5m x 3m with max height 0.95m.

    There is already insulation between the joists. Since this is only for storage I was wondering if I could simply put 18mm OSB or chipboard on top of the joists or if I needed a RSJ.
    Joists are 35 to 40mm wide with 250 to 300 gap between them.

    Any advice on OSB vs chipboard?

    Thanks


Comments

  • #2
    dodzy
    Registered Users, Registered Users 2 Posts: 10,153 ✭✭✭✭dodzy


    Dublimax wrote: »
    Hi there,

    I am looking to floor the attic. The attic is not big enough for a room hence will only be used for storage. Size is ~5m x 3m with max height 0.95m.

    There is already insulation between the joists. Since this is only for storage I was wondering if I could simply put 18mm OSB or chipboard on top of the joists or if I needed a RSJ.
    Joists are 35 to 40mm wide with 250 to 300 gap between them.

    Any advice on OSB vs chipboard?

    Thanks
    No RSJs needed. Floor away. OSB will do fine. I personally avoid T&G in attic as if there is a need to lift a board for access in the future, it causes problems.


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