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    Cavity Wall

    Does anyone know if British Gas or B&Q will do this on stone walls?

    Just had a local company out and they've kindly informed me they won't do it and I should have mentioned my house was stone on the phone before they came out.

    Not impressed!

    21 Comments

    Do you actually have a cavity wall?

    the gap between the outside brick and the inside brick is the cavity, do you have one ?
    ]wikipedia info on Cavity walls

    Banned

    You probably dont have a cavity wall

    what are you trying to get done?

    Original Poster

    We had a builder relative have a look and he said we needed cavity wall insulation because we're losing a lot of heat. It's a real cold house.
    It's an end terrace stone house, not a small little stone cottage lol.
    As far as I'm aware we can have it done but I didn't know why this company said they couldn't do it on a stone wall.

    Google it,there's loads of info about stone walls and cavity insulation.

    Banned

    spider1986;4608925

    We had a builder relative have a look and he said we needed cavity wall … We had a builder relative have a look and he said we needed cavity wall insulation because we're losing a lot of heat. It's a real cold house.It's an end terrace stone house, not a small little stone cottage lol.As far as I'm aware we can have it done but I didn't know why this company said they couldn't do it on a stone wall.



    I didnt think stone walls had cavitys, did you not ask why? Or maybe they have to use different fillings that the said company dont use

    ]http//fo…441

    people discussing the same thing, hope it helps.

    apparently damp problems plague stone walls when insulated so it cannot be guaranteed therefore it can't be done.

    if B&Q can do it it will be around £198

    Original Poster

    ding;4608985

    if B&Q can do it it will be around £198



    That seems to be the price that British Gas and this local company would do it for. We just rang the local one bacase he could come and survey quicker.

    Original Poster

    sassie;4608934

    I didnt think stone walls had cavitys, did you not ask why? Or maybe they … I didnt think stone walls had cavitys, did you not ask why? Or maybe they have to use different fillings that the said company dont use



    I'm not in the house, I'm at work. When I get home I can find out exactly what he said.

    Banned

    Alfonse;4608962

    ]http://forums.moneysavingexpert.com/showthread.html?t=1175441people … ]http://forums.moneysavingexpert.com/showthread.html?t=1175441people discussing the same thing, hope it helps.apparently damp problems plague stone walls when insulated so it cannot be guaranteed therefore it can't be done.



    thanks for that alfonse, you learn something new every day :thumbsup:

    after reading around its as alfonse said, damp is the reason why they dont do it on stone

    Banned

    informed me they won't do it and I should have mentioned my house was stone on the phone before they came out.
    If you knew enough to tell them that you probably woulfd know enough to do the job yourself. lol

    most houses built from stone are made of porous stone which absorb moisture and require airflow round to breath, hence the damp problems associated with "loose infill" stone walls.
    another alternative would be to dry line the walls with an heat insulated plaster board.

    Original Poster

    maddogb;4609119

    most houses built from stone are made of porous stone which absorb … most houses built from stone are made of porous stone which absorb moisture and require airflow round to breath, hence the damp problems associated with "loose infill" stone walls.another alternative would be to dry line the walls with an heat insulated plaster board.



    We're having some damp problems in a corner of an upstairs bedroom and that's without the cavity wall being done!
    Is dry lining as simple and quick as cavity wall?
    Thanks for advice.

    spider1986;4609139

    We're having some damp problems in a corner of an upstairs bedroom and … We're having some damp problems in a corner of an upstairs bedroom and that's without the cavity wall being done!Is dry lining as simple and quick as cavity wall?Thanks for advice.



    check your gutters or down pipes for any leaks in the affected area

    spider1986;4609139

    We're having some damp problems in a corner of an upstairs bedroom and … We're having some damp problems in a corner of an upstairs bedroom and that's without the cavity wall being done!Is dry lining as simple and quick as cavity wall?Thanks for advice.


    dont think it would be a good idea to dry line over dampness it would pay to see what was the cause and treat first

    Banned

    spider1986;4609139

    We're having some damp problems in a corner of an upstairs bedroom and … We're having some damp problems in a corner of an upstairs bedroom and that's without the cavity wall being done!Is dry lining as simple and quick as cavity wall?Thanks for advice.



    i have the same problem in a brick house that has cavity wall insulation, had plaster ripped off and redone but still no idea why it was a problem, you will need to sort the problem out 1st before doing anything

    Original Poster

    Thanks for all the advice everyone, I'm going to get my builder uncle to come round again before I do anything!

    From my experience of a stone wall house with cavity, the inside of the stone work needs to be level i.e. none of the stone sticking into the cavity. Otherwise the foam stuff (technical term I believe) wont fill it properly. That was what the company told me as an excuse for not doing it anyway.
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