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Pumped Cavity Insulation - Drylining a good idea?

  • 30-06-2010 02:37PM
    #1
    Bitten & Hisses
    Registered Users, Registered Users 2 Posts: 1,198 ✭✭✭


    Hi guys, we're progressing nicely with our blockwork up to first floor level at present. We have a 150mm cavity which will be pumped with platinum bead insulation. We also intend using a 2" insulated plasterboard on the inner leaf of our cavity wall. Is there any reason why this wouldn't work, or why it would be a bad idea, or are we going the right direction? Any opinions on this are much appreciated.


Comments

  • #2
    Bitten & Hisses
    Registered Users, Registered Users 2 Posts: 1,198 ✭✭✭Bitten & Hisses


    Anyone? :confused:


  • #3
    [Deleted User]
    Posts: 0 ✭ [Deleted User]


    Im going with a similar cavity wall to you. insulate insulate and insulate some more. Check with your engineer what u-value this insulation gives you and will it help towards a high energy rating. Read up on whats required for an A1 energy rating. It will give you specs on the cavity wall u-values you need among other things.


  • #4
    clint_eastman
    Registered Users, Registered Users 2 Posts: 308 ✭✭clint_eastman


    I've the same wall spec. If you do a search, there are a load of threads on here discussing the pro's and cons of dry-lining on a new build. Search for dry-lining, insulated plasterboard, condensation....


  • #5
    beyondpassive
    Registered Users, Registered Users 2 Posts: 558 ✭✭✭beyondpassive


    Drylining will improve your BER but do nothing for the thermal comfort. You'd be better to concentrate on eliminating your thermal bridges at eaves and chimneys etc and improving airtightness.


  • #6
    Bitten & Hisses
    Registered Users, Registered Users 2 Posts: 1,198 ✭✭✭Bitten & Hisses


    beyondpassive wrote: »
    Drylining will improve your BER but do nothing for the thermal comfort. You'd be better to concentrate on eliminating your thermal bridges at eaves and chimneys etc and improving airtightness.

    Pardon my ignorance, but could you explain this to me like you would to a five year old? :)


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  • #7
    beyondpassive
    Registered Users, Registered Users 2 Posts: 558 ✭✭✭beyondpassive


    see my post in this thread

    http://www.boards.ie/vbulletin/showthread.php?t=2055945236&page=2


  • #8
    Bitten & Hisses
    Registered Users, Registered Users 2 Posts: 1,198 ✭✭✭Bitten & Hisses


    So, in a nutshell, you recommend a 200 to 250mm cavity and a focus on airtightness?


  • #9
    Viking House
    Registered Users, Registered Users 2 Posts: 551 ✭✭✭Viking House


    Your decision to dryline or not would also depend on whether you have dealt with the wall/floor cold bridges.


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