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    what size new cavity wall on top of existing cavity wall

    ta oldun I didn't realise that i had mentioned the trees here I thought I had lost the email on the pc so I started again - I must have posted it. - only just seen it, as the comment about internal insulation had answered my original question. thanks I am slowly finding my way around...
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    Leylandii hedge effect on proposed 2 storey extension

    Sorry oldun I do apologise, I didn't realise that I had to list all of the potential build problems in one post. I didn't know at the time the Leylandii may cause a problem it is not a boundary hedge and it only affects my property. Unfortunately I do not have a crystal ball to foresee...
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    Leylandii hedge effect on proposed 2 storey extension

    I have a Leylandii hedge 3m tall about 6m from where I intend to build on top of an existing extension - A builder I contacted said I would need to have 2m deep footings - the existing house has only 1m footings . I don't want to involve the council planning / building regs people just yet...
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    what size new cavity wall on top of existing cavity wall

    A good answer - I mentioned my problem to a builder and said about internal insulation - he came up with same answer BUT gave me another problem I have a Leylandii hedge 3m tall about 6m from where I intend to build - He said I would need to have 2m deep footings - the existing house...
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    what size new cavity wall on top of existing cavity wall

    Thanks for the info above guys could I acheive the same effect by incorporating a lintel ? or by a layer of horizontal / cut celcon blocks on the inner wall ?
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    what size new cavity wall on top of existing cavity wall

    Whoops I am CAD mode so text was in capitals sorry
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    what size new cavity wall on top of existing cavity wall

    GOOD POINT - THEY ARE ONE METRE DEEP 18 OR 24" WIDE CONCRETE STRIP ON SANDSTONE ! WAS TOLD BY THE BUILDING INSPECTOR WHEN I QUERIED WHY IT HAD TO BE THAT DEEP (AS I DIDN'T LIKE CHOPPING THE SANDSTONE THAT STARTED AT ABOUT 300mm DEEP) - HE EXPLAINED THAT IT MEANT IF A SUBSEQUENT OWNER...
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    what size new cavity wall on top of existing cavity wall

    I have an existing extension built in the 1980s with what I term a standard 11 inch wall i.e 100mm brick outer, 50mm cavity (rockwool filled ) and 100mm celcon inner layer with 12mm plaster scim . I now want to build above this extension ( and carport ) and need to know what dimensions the...
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