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Should party wall be insulated in a semi-detached house?

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  • 16-10-2016 10:36pm
    #1
    bmay529
    Registered Users Posts: 400 ✭✭


    Family member is planning to have internal insulation fitted in a semi-detached house. They are thinking of not insulating the party wall... should it be insulated? Is it necessary if they want to apply for the grant? They may not go for the grant as their finances may force them to do the insulation in several stages or they may go for an insulation thickness that is less thick than the 5/6" insulation boards required for the grant so save loosing space.


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    #2
    _Brian
    Registered Users Posts: 18,569 ✭✭✭✭_Brian


    If it were me I'd consider doing it to reduce sound transfer if nothing else.


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    #3
    P. Breathnach
    Registered Users Posts: 12,089 ✭✭✭✭P. Breathnach


    The assumption is that both houses are heated to about the same temperature, so heat loss to the other house is insignificant.


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    #4
    Gumbo
    Moderators, Society & Culture Moderators Posts: 39,400 Mod ✭✭✭✭Gumbo


    bmay529 wrote: »
    Family member is planning to have internal insulation fitted in a semi-detached house. They are thinking of not insulating the party wall... should it be insulated? Is it necessary if they want to apply for the grant? They may not go for the grant as their finances may force them to do the insulation in several stages or they may go for an insulation thickness that is less thick than the 5/6" insulation boards required for the grant so save loosing space.

    There is no Building Regulation requirement to insulate the party wall.
    It may be wise to put a smaller board on it if space allows to help with heat retention and noise transfer but if next doors joists are built into the party wall, noise will not be reduced anyhow.


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