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Insulation

  • 21-06-2021 8:50pm
    #1
    Registered Users Posts: 3,004 ✭✭✭ C__MC


    Just a question
    Currently house building
    Plan was to bead house with internal slab of insulation to meet U Value

    Is this the most cost effective way or is it better to put boards inbetween cavity.


Comments

  • Registered Users Posts: 2,544 ✭✭✭ MicktheMan


    That's a poor spec'ed wall and a strange question to be asking mid build:eek:
    Would you not have figured this out long before a hole was dug on site?
    What does your arch / eng / other professional(s) advise?


  • Registered Users Posts: 3,004 ✭✭✭ C__MC


    House isn't built yet
    Architect preferred boards between cavity but given the hectic and busy climate out there, there is a delay and shortage on manufacturing them

    The other option was the one I mentioned bead cavity with internal slab, my question was which is the cheaper method?


  • Subscribers Posts: 36,251 ✭✭✭✭ sydthebeat


    C__MC wrote: »
    House isn't built yet
    Architect preferred boards between cavity but given the hectic and busy climate out there, there is a delay and shortage on manufacturing them

    The other option was the one I mentioned bead cavity with internal slab, my question was which is the cheaper method?

    cheaper certainly doesnt mean best

    in your case id go with a 200mm cavity (MINIMUM) and pump bead


  • Registered Users Posts: 10,926 ✭✭✭✭ Calahonda52


    4" solid on flat, with EWI, windows hung on outside so reduced thermal bridges,
    make inner face airtight, 50 mm service cavity: job done


  • Moderators, Home & Garden Moderators Posts: 10,101 Mod ✭✭✭✭ BryanF


    sydthebeat wrote: »
    cheaper certainly doesnt mean best

    in your case id go with a 200mm cavity (MINIMUM) and pump bead

    +1


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