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6 inch cavity ok?

  • 28-02-2011 3:35pm
    #1
    Selfbuilderx
    Registered Users, Registered Users 2 Posts: 27 ✭


    Can anyone tell me if a 6 inch cavity is ok in a new build dormer , would i have problems down the road structurally. I plan on pumping in insulation.
    Thanks


Comments

  • #2
    DOCARCH
    Moderators, Home & Garden Moderators, Science, Health & Environment Moderators Posts: 18,452 Mod ✭✭✭✭DOCARCH


    120mm would be the maximum size for a 'standard' cavity, using 'standard' wall ties, lintels, cavity closers, etc., etc. A cavity any wider than 120mm generally needs the input of a structural engineer to look at and specifiy wall ties, etc.


  • #3
    kboc
    Registered Users, Registered Users 2 Posts: 458 ✭✭kboc


    i built 150 mm cavity, no struct eng needed for me just heavier wall tiles. Why stop at 150mm I intended to do 200mm but building control (in NI) didn't like sound of it, because they are in dark ages!!


  • #4
    ELP
    Registered Users, Registered Users 2 Posts: 180 ✭✭ELP


    Hi kboc

    Im putting my plans into building control NI next week.
    I have a 200mm cavity- what ya think of my chances?


  • #5
    donalabu
    Registered Users, Registered Users 2 Posts: 44 ✭donalabu


    you just need to get longer and stronger wall ties, you can Google <snip> for more info

    please pm any suggested products, in accordance to forum rules

    sydthebeat


  • #6
    kboc
    Registered Users, Registered Users 2 Posts: 458 ✭✭kboc


    ELP wrote: »
    Hi kboc

    Im putting my plans into building control NI next week.
    I have a 200mm cavity- what ya think of my chances?

    They should be ok at this stage. Better check before you start though


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