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ICF Build..are there many out there?

  • 26-01-2009 3:51pm
    #1
    Registered Users, Registered Users 2 Posts: 68 ✭✭


    Hi All,

    I'm considering an ICF construction for my new build and am just wondering if there are many of ye out there who have used it and how is it performing.

    Many thanks,

    BB


Comments

  • Posts: 31,118 ✭✭✭✭ [Deleted User]


    I've built using an ICF system and are very happy with the results.

    The house is very easy to heat with very good insulation, rollow the link in my sig to see the self build in progress.


  • Registered Users, Registered Users 2 Posts: 46,547 ✭✭✭✭muffler


    Moved to main C & P forum


  • Registered Users, Registered Users 2 Posts: 68 ✭✭Bobbiblu


    I've built using an ICF system and are very happy with the results.

    The house is very easy to heat with very good insulation, rollow the link in my sig to see the self build in progress.

    great! thanks will check that out. :)


  • Closed Accounts Posts: 2,389 ✭✭✭Carlow52


    I have looked at ICF for a couple of years at this stage and would make the following comments. [ This is not a pro/bash{ ICF} exercise, just a few thoughts. ]

    The main thing that concerns me is the expense attached to getting an IAB approved render applied properly. [ This issue also applies to the trend to externally insulate houses. ]

    The second thing that makes me reluctant to use it is the issue of thermal mass if ICF is used for all internal walls
    High thermal mass lends itself to having a more even internal temperature and is adopted in the 'Passiv Haus' design with the south facing glass atrium.

    [Internal dry lining creates the same low thermal mass issue as ICF.]

    IMO opinion, having solid fuel heating systems such as multi-fuel stoves or wood pellet boilers work better with a higher thermal mass.


  • Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    Carlow52 wrote: »
    The second thing that makes me reluctant to use it is the issue of thermal mass if ICF is used for all internal walls
    High thermal mass lends itself to having a more even internal temperature and is adopted in the 'Passiv Haus' design with the south facing glass atrium.

    I only found out today that the first Irish PHI certified passive house built using an ICF system was certified in December. There are only 5 or 6 certified passive houses here at the moment. The internal walls are all quinnlites. Concrete first floor also adds to the thermal mass.

    The ICF system used has 50mm EPS on inside, 250mm EPS on the outside.


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  • Registered Users, Registered Users 2 Posts: 68 ✭✭Bobbiblu


    Carlow52 wrote: »
    I have looked at ICF for a couple of years at this stage and would make the following comments. [ This is not a pro/bash{ ICF} exercise, just a few thoughts. ]

    The main thing that concerns me is the expense attached to getting an IAB approved render applied properly. [ This issue also applies to the trend to externally insulate houses. ]

    The second thing that makes me reluctant to use it is the issue of thermal mass if ICF is used for all internal walls
    High thermal mass lends itself to having a more even internal temperature and is adopted in the 'Passiv Haus' design with the south facing glass atrium.

    [Internal dry lining creates the same low thermal mass issue as ICF.]

    IMO opinion, having solid fuel heating systems such as multi-fuel stoves or wood pellet boilers work better with a higher thermal mass.


    Carlow52, I hadn't even considered the cost of external render - thanks for that and I hadn't decided about whether or not to use ICF internally but you've made good points about thermal mass so I'll check that out too - definitely lots to think about so thanks for your input :)


  • Registered Users, Registered Users 2 Posts: 68 ✭✭Bobbiblu


    sas wrote: »
    I only found out today that the first Irish PHI certified passive house built using an ICF system was certified in December. There are only 5 or 6 certified passive houses here at the moment. The internal walls are all quinnlites. Concrete first floor also adds to the thermal mass.

    The ICF system used has 50mm EPS on inside, 250mm EPS on the outside.

    Hi SAS, thanks for your input also, any chance you can let me know where I'd find more info about the house you've mentioned?? Cheers :)


  • Registered Users, Registered Users 2 Posts: 1,504 ✭✭✭BarneyMc


    sas wrote: »
    The internal walls are all quinnlites. Concrete first floor also adds to the thermal mass.

    Just wondering why use Quinnlites for the internal walls? Surely standard concrete blocks would have greater thermal mass?
    sas wrote: »
    The ICF system used has 50mm EPS on inside, 250mm EPS on the outside.

    Seems like a lot of external insulation which is good. Who is the ICF company?


  • Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    BarneyMc wrote: »
    Just wondering why use Quinnlites for the internal walls? Surely standard concrete blocks would have greater thermal mass?

    He was under the impression that they are better from a sound proofing point of view. I would have imagined that the quinns had better thermal mass, no idea why though!
    BarneyMc wrote: »
    Seems like a lot of external insulation which is good. Who is the ICF company?
    PM sent


  • Registered Users, Registered Users 2 Posts: 1,282 ✭✭✭sas


    Bobbiblu wrote: »
    Hi SAS, thanks for your input also, any chance you can let me know where I'd find more info about the house you've mentioned?? Cheers :)

    Sorry, only saw this now. PM sent.


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