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Ventilation for zinc dormers in roof

  • 20-09-2018 9:56pm
    #1
    johnpool24186
    Registered Users, Registered Users 2 Posts: 6 ✭


    Looking for advice on zinc dormers on roof! Firstly is it better to frame out with 9x2 (more room for insulation between studs) and secondly does it need ventilation ? It will have a flat roof on top! Advice greatly appreciated on other aspects too as roofer is old school and hasn't much experience with zinc!


Comments

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


    Yes & yes

    Couldn’t afford detailed drawings, but can afford zinc?

    Note building regulation A,B,C & L - best to figure out compliance before you start.


  • #3
    Gumbo
    Moderators, Society & Culture Moderators Posts: 40,800 Mod ✭✭✭✭Gumbo


    johnpool24186 wrote: »
    Looking for advice on zinc dormers on roof! Firstly is it better to frame out with 9x2 (more room for insulation between studs) and secondly does it need ventilation ? It will have a flat roof on top! Advice greatly appreciated on other aspects too as roofer is old school and hasn't much experience with zinc!

    Can’t he just look at the construction drawings?
    Will the window open? Will it comply with part b fire safety?


  • #4
    johnpool24186
    Registered Users, Registered Users 2 Posts: 6 ✭johnpool24186


    Thanks for reply! Just looking for advice (not sarcastic comments)


  • #5
    johnpool24186
    Registered Users, Registered Users 2 Posts: 6 ✭johnpool24186


    johnpool24186 wrote: »
    Thanks for reply! Just looking for advice (not sarcastic comments)

    Yes the window will open!
    Construction drawings are not the clearest I’m afraid!
    Thanks for reply


  • #6
    Gumbo
    Moderators, Society & Culture Moderators Posts: 40,800 Mod ✭✭✭✭Gumbo


    johnpool24186 wrote: »
    Yes the window will open!
    Construction drawings are not the clearest I’m afraid!
    Thanks for reply

    You need to go back to your Professional in that case is the best way forward.
    You are carrying out works which effect every person that lives in the dwelling, it should be done correctly.

    Who is signing off on the works as compliant with Planning and Building Regulations?


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  • #7
    johnpool24186
    Registered Users, Registered Users 2 Posts: 6 ✭johnpool24186


    kceire wrote: »
    You need to go back to your Professional in that case is the best way forward.
    You are carrying out works which effect every person that lives in the dwelling, it should be done correctly.

    Who is signing off on the works as compliant with Planning and Building Regulations?

    Our architect has drawing up spec on dormer but doesn’t show ventilation and also shows 4x2 for form work! Currently pricing 2 company’s for the zinc cladding and either won’t send on there detail until they have got the job!
    So at a stand still until I receive quotes!


  • #8
    Gumbo
    Moderators, Society & Culture Moderators Posts: 40,800 Mod ✭✭✭✭Gumbo


    johnpool24186 wrote: »
    Our architect has drawing up spec on dormer but doesn’t show ventilation and also shows 4x2 for form work! Currently pricing 2 company’s for the zinc cladding and either won’t send on there detail until they have got the job!
    So at a stand still until I receive quotes!

    I wouldn't blame those companies, that's the norm.
    Your Architect needs to detail this, or at least whoever is inspecting and certifying the works.


    The zinc clad companies will then send the detail of how their system connects to your arch/eng structure.


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