1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Building a single skin garage, some questions

Discussion in 'Building' started by Danturboc, 2 Dec 2015.

  1. Danturboc

    Danturboc

    Joined:
    26 Apr 2015
    Messages:
    95
    Thanks Received:
    2
    Location:
    Cheshire
    Country:
    United Kingdom
    I'm currently in talks with my mate whos going to be building me a garage.

    I want the garage to be roughly 22ft x 12ft, if I have read it correctly then no planning persmission is needed so long as the walls are no higher than 2.5m which is fine.

    I want it made from concrete blocks and then rendered on the outside. He is telling me that he cannot get hold of the right size blocks to do it single skin and so he needs to do it double skin with a cavity? I don't see why, is he right?

    Also the concrete base/foundations, I think he said he would have to dig down 550 (mm?) and that hes had a quote for the concrete for around the £1000 mark. Does this sound about right?

    Ive told him to just build me the shell for the garage and I will do the rest ie. doors and roof etc.. as I don't mind doing those bits myself.

    Any info on this? He hasn't given me a full price yet and I'm not sure what its going to be.
    Im in Manchester (HYDE) if that makes any differance
     
  2. Sponsored Links
  3. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    33,936
    Thanks Received:
    4,607
    Location:
    West Mids
    Country:
    United Kingdom
    Are you sure that your mate is a builder?

    You can build the garage in a single 100mm block wall

    There is a jolly northerner on here who can comment on the price.
     
  4. kazuya

    kazuya

    Joined:
    13 Sep 2012
    Messages:
    308
    Thanks Received:
    60
    Location:
    Nottinghamshire
    Country:
    United Kingdom
    is there a block shortage where you are ?
    around here, notts, £1000 will get you around 10 cubic meters of concrete, thats about 6x more than he needs for the footing
    unless of course hes filling the trench to the top and casting the garage floor with it as well
     
  5. noseall

    noseall

    Joined:
    2 Feb 2006
    Messages:
    43,428
    Thanks Received:
    2,684
    Location:
    Staffordshire
    Country:
    United Kingdom
    If the concrete price includes a pump, then £1k sounds high end but ok. You will need aboot 5m³ for the trenches and you should be paying anywhere between £80 and £120 per cube.
     
  6. RonnyRaygun

    RonnyRaygun

    Joined:
    4 Apr 2008
    Messages:
    1,813
    Thanks Received:
    257
    Location:
    Hertfordshire
    Country:
    United Kingdom
    If you are planning to do 450mm wide by 225mm deep strip footings then you will only need about two cubic metres of concrete. If building 1/2 brick thick I wouldn't go any less thick than 225mm depth of concrete.

    You can go as thin as 90mm blockwork for the walls but if less than 190mm wall thickness then you have to have piers at maximum 3 metre centres.
     
  7. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    33,936
    Thanks Received:
    4,607
    Location:
    West Mids
    Country:
    United Kingdom
    Those must be the blocks that the OP's mate can't get. :rolleyes:
     
  8. RonnyRaygun

    RonnyRaygun

    Joined:
    4 Apr 2008
    Messages:
    1,813
    Thanks Received:
    257
    Location:
    Hertfordshire
    Country:
    United Kingdom
  9. Sponsored Links
  10. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    33,936
    Thanks Received:
    4,607
    Location:
    West Mids
    Country:
    United Kingdom
    Blimey I've not seen anything less than 100mm for years. I can't think of any reason to actually make any that thin.
     
  11. RonnyRaygun

    RonnyRaygun

    Joined:
    4 Apr 2008
    Messages:
    1,813
    Thanks Received:
    257
    Location:
    Hertfordshire
    Country:
    United Kingdom
    I know someone who used 75mm blocks to save space on his extension...
     
  12. Danturboc

    Danturboc

    Joined:
    26 Apr 2015
    Messages:
    95
    Thanks Received:
    2
    Location:
    Cheshire
    Country:
    United Kingdom
    I dont think hes an actual builder, he is just one of them that has done it all before and apparently knows what hes doing.

    I do want the garage floor as concrete too so maybe the £1000 is including the concrete slab too. At least the price for concrete is about right. Hes meant to be giving me a full price in the next few days so will see.
     
  13. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    33,936
    Thanks Received:
    4,607
    Location:
    West Mids
    Country:
    United Kingdom
    This could be fun.
     
  14. Danturboc

    Danturboc

    Joined:
    26 Apr 2015
    Messages:
    95
    Thanks Received:
    2
    Location:
    Cheshire
    Country:
    United Kingdom
    Well he has been back on today with a price. He has said £3300 to build me a "shell" which is what I asked for. ie. the footings with steel mesh(not sure on the depth hes doing them), concrete pad too and a bare shell with double skin using 4" concrete blocks.

    Now I didn't think this was too bad and was expecting that sort of money. But I have told him what you guys said about doing it single skin with pillars and hes gonna look into it. Might save me abit of money on blocks.

    I haven't agreed anything yet. What do you lot think? I have thought about just getting the footings done and doing the rest myself but not sure.
     
  15. loply

    loply

    Joined:
    11 Jun 2013
    Messages:
    288
    Thanks Received:
    29
    Country:
    United Kingdom
    I'd say not that much point in having it double skin unless you're insulating the roof & door too, as there won't be any real thermal benefit. Just uses twice as many blocks and takes twice as long. Plus you loose about 20cm of space all around.
     
  16. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page