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Metal Ceiling option ?

  • 03-04-2018 1:00pm
    #1
    Ascii
    Registered Users, Registered Users 2 Posts: 387 ✭✭


    I am doing a home build project myself. Rectangular block onto the back of the house. Internal dimensions are 5200 wide and 4600 deep. Being over cautious about the 5200 metre span I put in a steel beam to split it. Notched the 9x2’s to sit into the web. Solid bridging and then sheeted the whole lot with ¾” marine ply. Roof pitch is 4 degrees. Using a fatra membrane as the finished covering. Ever connection screwed as opposed to nailed. My question is would you hang a false metal stud ceiling underneath in a bit to reduce the potential for cracks in the ceiling when compared to fixing plasterbaord straight to the underside of the 9x2’s. Roof is extremely rigid with very little deflection but I am slightly fearful that in time with movement and loading it will lead to hairline joint cracks on the ceiling throughout. Maybe I am just being OTT. Any advice welcome.


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,146 Mod ✭✭✭✭BryanF


    I’d be more concerned about insulation continuity, roof ventilation and air-tightness before worrying about plasterboard deflection/cracking


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