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Flat Roof Waterprofing

  • 10-01-2008 12:40pm
    #1
    pete6296
    Registered Users, Registered Users 2 Posts: 351 ✭✭


    Hi all,
    In a few weeks, i will have a flat roof over conservatory. It will be a concrete balcony with Kingspan TR27 below 50mm screed. On top of the screed i was thinking of Asphalt Torching to waterproof flat roof. Has anyone experience in this and could recommend an experienced installer for the asphalt. It is critical that i get it right, build is in Galway.
    Thanks,
    Pete


Comments

  • #2
    AckwelFoley
    Registered Users, Registered Users 2 Posts: 12,555 ✭✭✭✭AckwelFoley


    you are correct it is very important to get this right.

    I need to do a little research and muddleing around on this to check a few things that im not certain on. I'l try and get back to you this evening


  • #3
    Mellor
    Registered Users, Registered Users 2 Posts: 39,900 ✭✭✭✭Mellor


    There are better modern products available as an alternitive to torch on felt.


  • #4
    AckwelFoley
    Registered Users, Registered Users 2 Posts: 12,555 ✭✭✭✭AckwelFoley


    Mellor wrote: »
    There are better modern products available as an alternitive to torch on felt.

    Yes, there is a silicate based paint product.

    My biggest concern is where the barge connects to the main house...

    Any settle in the foundation would pull the barge away.. so flashing is needed ... but im not familiar with the detail of barge roofs.. yet ;)


  • #5
    Mellor
    Registered Users, Registered Users 2 Posts: 39,900 ✭✭✭✭Mellor


    I think you mean abbutment not barge. The barge is the pitch edge of a roof above a gable.

    I wasn't refering to paint products btw, was talking about polymer based membranes such as trocal or similar. These are generally better than older bitumen based ones.


  • #6
    pete6296
    Registered Users, Registered Users 2 Posts: 351 ✭✭pete6296


    Hi Mellor,
    What products would you suggest as being a better option to asphalt. I appreciate your help. Any installer, company would be great.
    Thanks,
    Pete


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  • #7
    muffler
    Registered Users, Registered Users 2 Posts: 46,545 ✭✭✭✭muffler


    Mellor wrote: »
    The barge is the pitch edge of a roof above a gable.
    no no no. The barge is what you have to do to get through the crowd and up to the bar counter on a busy Saturday night down in the local bar.


    sorry i count resist that :D


  • #8
    Mellor
    Registered Users, Registered Users 2 Posts: 39,900 ✭✭✭✭Mellor


    pete6296 wrote: »
    Hi Mellor,
    What products would you suggest as being a better option to asphalt. I appreciate your help. Any installer, company would be great.
    Thanks,
    Pete
    There are polymer based membranes such as trocal, these don't suffer from thermal or UV degradation, these can cause the felt to fail over time. They are also "cleaner", no transfer residue to clothes in hot weather (important if roof access is required). These polymer based membranes are normally air welded, instead of gas welded. A downside to this is the fact that the average builder (fpr an extension) may not have worked with it before, its more large scale at the moment.


    Its worth pointing out that one of the best (if not the best) ashphalt membranes is made my moy materials. It works and performs better than standard ashphalt, less degradation etc. This is likely due to the fact that it is not simply ashphalt but a bitumen/polymer mix. Sort of a halfway point


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