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Insulated Slab on inside of External Walls

  • 17-07-2021 8:50am
    Registered Users Posts: 580 ✭✭✭ Cushtie


    Currently building new build. Our Engineer has specified 200mm pumped cavity on external walls. I was thinking I might also add an insulated Slab to the inside of the external walls. It's adding about 3k to price of build. Not a huge sum in the grand scheme of things. The builder although happy out to do it thinks its overkill, house will be too hot and no need for it. Any thoughts?

    I just have this thing about putting in as much insulation as possible.

    (House is A2 rating with Heatpump / UFH and MHRV)