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Box profile cladding.

  • 30-09-2019 10:29pm
    #1
    buky
    Banned (with Prison Access) Posts: 66 ✭✭


    Hi folks,

    I wonder can I lay this on a plywood roof deck if I put felt underneath it?

    Many thanks.


Comments

  • #2
    the_pen_turner
    Registered Users, Registered Users 2 Posts: 7,596 ✭✭✭the_pen_turner


    i wouldnt. i would rather counterbatten to allow airflow


  • #3
    buky
    Banned (with Prison Access) Posts: 66 ✭✭buky


    thanks for the reply.

    I've seen this done elsewhere without problems, although not in this country.

    Most of the reason I wanted to do it the way I said is because of noise.


  • #4
    the_pen_turner
    Registered Users, Registered Users 2 Posts: 7,596 ✭✭✭the_pen_turner


    buky wrote: »
    thanks for the reply.

    I've seen this done elsewhere without problems, although not in this country.

    Most of the reason I wanted to do it the way I said is because of noise.

    You could still put the ply on the roof. It will definitely help noise but I think you would be better off having air movement under the sheeting. Doing both would be a good thing but leave vents to let any moisture and air out


  • #5
    buky
    Banned (with Prison Access) Posts: 66 ✭✭buky


    appreciate the reply. The ceiling will be about 1 metre below the roof and will be well insulated at ceiling level..
    I can't say for certain, but I wouldn't think condensation would not be a problem once the air in the building can't hit the sheeting directly.
    Anyway I have seen the cladding laid directly on sheathing with no probs, in other countries, although have not seen it yet here. In theory, as the cladding is on the ply, there will be no condensation as there is not a drastic temperature difference. It's kinda like having the cladding insulated.
    Also, if you think about it, there are vents in the cladding as it's not completely flat but has many raised sections.
    As for the noise, theory states that if the plywood is butted up against the cladding the noise is dulled and deadened significantly, if it rains. However, if there is an air gap, the noise will not really be dulled, and might even be magnified.
    Thanks for your comments.


  • #6
    the_pen_turner
    Registered Users, Registered Users 2 Posts: 7,596 ✭✭✭the_pen_turner


    buky wrote: »
    appreciate the reply. The ceiling will be about 1 metre below the roof and will be well insulated at ceiling level..
    I can't say for certain, but I wouldn't think condensation would not be a problem once the air in the building can't hit the sheeting directly.
    Anyway I have seen the cladding laid directly on sheathing with no probs, in other countries, although have not seen it yet here. In theory, as the cladding is on the ply, there will be no condensation as there is not a drastic temperature difference. It's kinda like having the cladding insulated.
    Also, if you think about it, there are vents in the cladding as it's not completely flat but has many raised sections.
    As for the noise, theory states that if the plywood is butted up against the cladding the noise is dulled and deadened significantly, if it rains. However, if there is an air gap, the noise will not really be dulled, and might even be magnified.
    Thanks for your comments.

    hard to tell without trying it


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