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Thin external insulation for shared side passageway

  • 02-11-2019 8:16pm
    #1
    StGriffen
    Registered Users Posts: 33 ✭


    Considering external insulation on the house but house is midterrace with a shared side passageway running through the house and the house next door (see Edenmore Cresent on Google Street view for what the setup looks like).

    Because of this the groundfloor has an external wall at the sidepassage. The normal thickness of external insulation plus finish (150mm+) is a problem here. Can you get thinner external insulation boards for this situation? I imagine it would be more expensive if it exists but would be okay for the relatively small area. Anyone had a similar issue? Cheers.


Comments

  • #2
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,140 Mod ✭✭✭✭BryanF


    Aerogel


  • #3
    selfbuild17
    Registered Users Posts: 125 ✭✭selfbuild17


    PIR insulation Bord will provide a much better thermal resistance than EPS. You should be able to bring the width down to 100mm or less and achieve similar u values


  • #4
    caycro
    Registered Users Posts: 261 ✭✭caycro


    BryanF wrote: »
    Aerogel

    Sorry to resurrect an old post but do you have any details on aerogel? I’m looking at using it and I am hoping to get some feedback from someone who’s already taken the plunge. Thanks


  • #5
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,140 Mod ✭✭✭✭BryanF


    What do you want to know?


  • #6
    caycro
    Registered Users Posts: 261 ✭✭caycro


    I’ve read that a Swiss firm is selling external plaster /render with Aerogel additives. They are also selling additives to paint which can be rolled on or applied with a paint gun. I have a cavity wall house and am too late in the renovation process to apply a standard external insulation System so I am investigating this as a solution, im thinking of using it both externally and internally on the outside walls. I was wondering if anyone had used it similarly and had feedback on both the experience and results. Also, what kind of price point it sells for? Thanks


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  • #7
    BryanF
    Moderators, Home & Garden Moderators Posts: 10,140 Mod ✭✭✭✭BryanF


    Never heard of this. Sounds a bit gimmicky. The aerogel I used was a 10mm sheet, it’s a silicate based matting type material with great insulation properties, ie 10mm if aerogel is ~equal to 50mm polystyrene (don’t have exact figures to hand). Btw any ‘insulation’ paint system I’ve seen to date has been complete BS.

    Send me the link via PM and I’ll look into it.

    Why is too late for EWI?


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