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Internal or external insulation?

  • 12-02-2013 3:58pm
    #1
    Theimprover
    Registered Users, Registered Users 2 Posts: 332 ✭✭


    Which is a better job if you had a choice, internally insulating your external walls or pumping the cavity? Not to sure what root to take.
    Internally I would be using 50mm insulation, pro-clima barrier and 12.5mm slab, how good is having the cavity pumped?


Comments

  • #2
    topcatcbr
    Registered Users, Registered Users 2 Posts: 1,477 ✭✭✭topcatcbr


    Theimprover wrote: »
    Which is a better job if you had a choice, internally insulating your external walls or pumping the cavity? Not to sure what root to take.
    Internally I would be using 50mm insulation, pro-clima barrier and 12.5mm slab, how good is having the cavity pumped?
    Between the two choices the better thermal u value will be got from the internal insulation (dry lining). However the best option if you can do it is external insulation (insulation outside the external wall) this is what I thought you were asking in your thread tittle.
    From reading your post your asking about internal vs pumped cavity. Both has its merits and demerits.


  • #3
    Theimprover
    Registered Users, Registered Users 2 Posts: 332 ✭✭Theimprover


    I got a price of €900 for cavity insulation 200m2 so I think I might go with both and make sure I get it right first time but I spoke with a company that do the pump system and he said I will not need to use a barrier (air tight system) in my drylining if I pump the cavity??


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