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Side return/rear extension using existing garden wall

Discussion in 'Your Projects' started by samtaylor, 7 Aug 2019.

  1. samtaylor

    samtaylor

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    Hi i have a garden flat in a victorian terrace and am about to undertake a single story side/rear extension. A builder told me we can build using the existing brick garden wall.
    i have a couple of queries:
    1. I presume he doesn't mean just insulate the garden wall. is this even possible? I'm guessing a cavity and block-work is required no?
    2. The existing garden wall obviously doesn't have a DPM. How will this work without one?

    I have added a few pictures and a drawing for clarity,
    any advice greatly appreciated.
    Cheers Sam
    I
     

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  2. jonbey

    jonbey

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    Sounds a bit dodgy to me for the reasons you mention, plus foundation depth will probably not please building control.
    Get a 2nd, 3rd, 4th opinion..... ask them how they'd build around the wall. I should think most will probably say they need to remove it first.
    But I am no builder so cannot say for sure!
     
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  3. samtaylor

    samtaylor

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    Hi Jonbey, i would tend to agree but the structural engineer seem to think its fine. Sam
     
  4. samtaylor

    samtaylor

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    thinking of doing this?
     

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  5. jonbey

    jonbey

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    Well, if the structural engineer says it is ok, then it must be! Although, surely you will have a cavity and inner wall too?
    Did the structural engineer dig down by the wall to see how deep the foundation is?
     
  6. samtaylor

    samtaylor

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    yes we did about 600mm (with 100mm from the face of the wall to the edge of the corbel)
     
  7. HERTS P&D

    HERTS P&D

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    Get a new builder, this one is cutting corners before he has even started.

    Andy
     
  8. samtaylor

    samtaylor

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    i don't think so Andy , the neighbours on both sides don't want the wall touching so I'm kind so I'm kinda stuck for options
     
  9. HERTS P&D

    HERTS P&D

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    Ok, crack on and good luck.

    Andy
     
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