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Double slabbed?

  • 15-10-2014 10:42pm
    #1
    del_c
    Registered Users, Registered Users 2 Posts: 142 ✭✭


    I'm fitting 100mm insulated slabs on the exterior walls on my house. There are 2 walls, built more recently, that already have 32mm cosy board fixed. I would like to bring these up to a modern standard, and was thinking of screwing a further 50mm board on top of the existing slabs to bring the aggregate up to standard - any drawback to this approach?


Comments

  • #2
    sydthebeat
    Subscribers Posts: 42,172 ✭✭✭✭sydthebeat


    What fixings are you using?


  • #3
    del_c
    Registered Users, Registered Users 2 Posts: 142 ✭✭del_c


    Contacted one of the suppliers, they said to keep the existing ones in place and fix 80 mm board on top with mushrooms...


  • #4
    sky6
    Registered Users, Registered Users 2 Posts: 1,444 ✭✭✭sky6


    Have the previous boards been skimmed. If they have you could be inviting problems.


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