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Garage Conversion Roof query

Discussion in 'Building' started by Jim1026, 27 Sep 2021.

  1. Jim1026

    Jim1026

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    Hi Everyone,

    I'm planning on converting my garage in to a habitable room which I also plan to extend by 2.6 meters at the rear of the existing attached garage to maintain a small garage.

    The original plan was to build a timber stud wall (insulated and with vapour barrier) to form a cavity in the garage which is currently single skin which seems to be a popular choice for garage conversions. The garage currently has a flat roof which would be changed to a pitched roof (hopefully vaulted inside).

    My question is, would it be possible to have the rafters of the new roof resting on top of the newly installed timber stud work and if so, would I need a Structural engineer to make sure there isn't too much weight on the timber stud wall? Or;

    Would it be better to dig foundations inside the garage and build a new block inner skin and tie it in to the existing garage wall? If this is a better way of doing it, can I use a narrow foundation (but still go down a meter) so that is doesn't impact on the garage wall that would remain in situ?
    I hope this makes sense and any information would be greatly appreciated.

    Thanks in advance
    Jim
     
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  3. ^woody^

    ^woody^

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    If you put the roof on a new inner leaf, timber or masonry, then that leaf should be on a suitable foundation.

    So put a wallplate and the rafters on the external wall.
     
  4. Jim1026

    Jim1026

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    Perfect, Thanks Woody I've been trawling the internet for the answer so that's much appreciated!
     
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