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    How to make concrete base for shed?

    Hi guys,

    I need to make a concrete base for a shed to be place on top.
    What materials do I need and how much?
    Area is roughly 3m by 3m.

    Thanks for any help.

    26 Comments

    umm....... you need concrete!

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    ring travis perkins or same and ask them what you need - let them price it up for you

    look around for cheaper - wickes - b & q etc - dont forget Quidco

    Forget about laying concrete it will cost you a fortune. Lay some slabs properly - as long as they're a decent thickness they will do the same job and cost you a tiny amount in comparison.

    Dig foundations about 400mm down then you can get a concrete pour you only pay for what you use. use a long piece of timber then to flatten it all off.

    Banned

    Dellboy182;8702605

    Dig foundations about 400mm down then you can get a concrete pour you … Dig foundations about 400mm down then you can get a concrete pour you only pay for what you use. use a long piece of timber then to flatten it all off.



    400mm? Its a shed FFS not a house!

    For something of that size 6 " or 150mm is the max you would need (You could go down to 100mm or 4" but would recommend sticking with 150mm.). Not saying 400mm wouldnt be better, but its an expense thats completely unnecessary.

    My 4m x 4.5m log cabin will be going up on 150mm. (I wouldnt trust laying paving slabs as suggested, though I agree if the surface is rock solid it will work. My soil wouldnt be a good idea.)

    guv;8702653

    400mm? Its a shed FFS not a house!For something of that size 6 " or 150mm … 400mm? Its a shed FFS not a house!For something of that size 6 " or 150mm is the max you would need (You could go down to 100mm or 4" but would recommend sticking with 150mm.). Not saying 400mm wouldnt be better, but its an expense thats completely unnecessary.My 4m x 4.5m log cabin will be going up on 150mm. (I wouldnt trust laying paving slabs as suggested, though I agree if the surface is rock solid it will work. My soil wouldnt be a good idea.)



    Well is it a brick shed or does he wanna put his lawn mower or Motor bike inside 400 would cover it all, do it right and do it once.

    Banned

    just get some railway sleepers and dig them in ........

    Banned

    Dellboy182;8702705

    Well is it a brick shed or does he wanna put his lawn mower or Motor bike … Well is it a brick shed or does he wanna put his lawn mower or Motor bike inside 400 would cover it all, do it right and do it once.



    ??? Brick shed? You maaaad?

    Do you think if it was, that detail would have been stated? Jeez.... i guess someone somewhere might have built one. I dont know of anyone who has mind! Maybe its a feature in your part of the country.. but it certainly isn't here!

    Banned

    guv;8702756

    ??? Brick shed? You maaaad?Do you think if it was, that detail would … ??? Brick shed? You maaaad?Do you think if it was, that detail would have been stated? Jeez.... i guess someone somewhere might have built one. I dont know of anyone who has mind! Maybe its a feature in your part of the country.. but it certainly isn't here!



    its called a garage......theyre quite the rage you know:)

    casparwhite;8702811

    its called a garage......theyre quite the rage you know:)



    A shed is not a garage :whistling:

    casparwhite;8702811

    its called a garage......theyre quite the rage you know:)



    then surly the op would of said garage and not shed :thumbsup:

    guv;870265

    My 4m x 4.5m log cabin will be going up on 150mm. (I wouldnt trust laying … My 4m x 4.5m log cabin will be going up on 150mm. (I wouldnt trust laying paving slabs as suggested, though I agree if the surface is rock solid it will work. My soil wouldnt be a good idea.)



    u bought it yet?!!!

    Banned

    ding;8702929

    then surly the op would of said garage and not shed :thumbsup:



    awoodhall2003;8702919

    A shed is not a garage :whistling:



    It is to a troll. :thumbsup: Its where he parks his less than 3 metre length car in! :?

    Just ignore like I do. He gets frustrated that way, though unfortunately I often get to see his drivel because it gets reposted as a quote where he thinks he's posted another dig to try for a bite. Shame that HUKD cant filter better.

    Just say No.

    lanc_red;8703156

    u bought it yet?!!!



    LOL... I have it on order... however, I'm toying with cancelling and buying the one my sister bought but didnt use. (Whilst I'm happy enough with my neighbours, it is actually 2.7m in height (ie 20cm higher than it can be so planning permission would be required. It's a risk I wouldnt need to take with her one - which is also cheaper to me (£1200) and 4m x 4m, so just slightly smaller all round. This way I dont need to worry is its dead on 2.5m high, so nothing to be worrying about. Hey... maybe I should park my car in it! :w00t:

    Banned

    awoodhall2003;8702919

    A shed is not a garage :whistling:



    well done....those years at uni are serving you well:thumbsup:

    ding;8702929

    then surly the op would of said garage and not shed :thumbsup:



    the op mentions nothing of bricks, what are you on about?:roll:

    Banned

    guv;8703221

    It is to a troll. :thumbsup: Its where he parks his less than 3 metre … It is to a troll. :thumbsup: Its where he parks his less than 3 metre length car in! :?Just ignore like I do. He gets frustrated that way, though unfortunately I often get to see his drivel because it gets reposted as a quote where he thinks he's posted another dig to try for a bite. Shame that HUKD cant filter better.Just say No. t:



    oh how i laugh.....guv ignoring me yet again but not really, as hes still having to tell me hes ignoring me...how ironic

    im so frustrated at being ignored like this:lol:

    i dont blame him its in his genes.......he cant help it


    just say no:)

    Original Poster

    Thanks everyone for your advice (and others for the humour :)).
    Decided to go for the concrete rather than slabs.
    40cm deep is a bit much and will cost more so probably 15-20cm deep?
    Just placing a wooden shed on top so should be sufficient.

    I will be mixing ballest, cement and water. Does anyone know the ratio/ how much of each I should mix together?
    Thanks for the help so far

    Banned

    ele-font;8704890

    Thanks everyone for your advice (and others for the humour :)).Decided to … Thanks everyone for your advice (and others for the humour :)).Decided to go for the concrete rather than slabs.40cm deep is a bit much and will cost more so probably 15-20cm deep? Just placing a wooden shed on top so should be sufficient.I will be mixing ballest, cement and water. Does anyone know the ratio/ how much of each I should mix together?Thanks for the help so far



    3-2-1

    3 ballast
    2 sharp sand (not soft sand, thats for mortar)
    1 cement

    enough water to make it like thick porridge

    get loads of bricks and big stones and smash them up and put in the bottom of the pit, and smash them down and level them, saves you some concrete
    also if you have any long bits of steel, pipe or thick mesh, or rods, angle iron, put them in too, adds to the strength, and saves more concrete

    make sure nothing is less than 1 inch from the surface though

    make up wood sides, well staked in and make sure they are perfect level, when you have filled with concrete get a long piece of wood, long enough to go end to end, and level it, and it will also make a non slip top due to the line pattern from moving the wood over it (probably need 2 of you to do this)

    you want the edging boards to be 1 inch above the ground level, so the concrete drains and not be a swimming pool when it rains, yo will then have a nice raised concrete platform for the shed
    measure carefully, so the base is 1 inch bigger all round than the shed

    Original Poster

    jubbyme;8704993

    3-2-13 ballast2 sharp sand (not soft sand, thats for mortar)1 … 3-2-13 ballast2 sharp sand (not soft sand, thats for mortar)1 cementenough water to make it like thick porridge….


    Thanks for the detailed guide - very helpful :thumbsup: repped

    Banned

    ele-font;8704890

    Thanks everyone for your advice (and others for the humour :)).Decided to … Thanks everyone for your advice (and others for the humour :)).Decided to go for the concrete rather than slabs.40cm deep is a bit much and will cost more so probably 15-20cm deep? Just placing a wooden shed on top so should be sufficient.I will be mixing ballest, cement and water. Does anyone know the ratio/ how much of each I should mix together?Thanks for the help so far



    15cm is the max you need to go for a wooden shed.

    No problem in DIY.... but I trust you're using a mixer?

    3m x 3m x 15cm is a lot of cement to mix and you need it poured in fast so it can be tamped. (You dont want it part drying on you!)

    Glad you dont have a less than 3min length car BTW. :w00t::thumbsup:

    Banned

    should be just about able to get a mini in there, its like a mini garage:roll:

    Don't forget to put a plastic sheet/membrane on the ground before pouring concrete. IN my opinion concrete is bad idea. Much easier to put down membrane, hardcore, sand then slabs which must be above ground level to prevent your shed getting waterlogged!

    moob;8702546

    Forget about laying concrete it will cost you a fortune. Lay some slabs … Forget about laying concrete it will cost you a fortune. Lay some slabs properly - as long as they're a decent thickness they will do the same job and cost you a tiny amount in comparison.



    +1:thumbsup:

    Banned

    dcx_badass;8715497

    My shed is 12ft x 18ft and made out of breezeblock, has a metal played … My shed is 12ft x 18ft and made out of breezeblock, has a metal played front door, 12 plug sockets, double glazed windows, don't hate.



    got to 1 up you here:

    24x24 ft, all brick, electric, plumbed in sink, two double garage doors (with remote openers) (one each end, can drive out the other side) , 2 folding workbenches one 6ft, one 8ft, insulated ceiling, 12x6ft light tubes, industrial metal clad sockets and switches, 64 amp supply, and fitted cabinets...

    Banned

    dcx_badass;8715518

    That's not a shed if it has garage doors though so I'm still winning.



    its part shed! only a bit of it has my car in it!
    used to be my workshop for hobbies (restoring bikes) nowadays, does very little
    besides, handy for getting big stuff in and out, like my brothers boat over winter
    can also wash the car in it, has a full length floor drain

    How many bags of cement do I need to cover an area 15tx13ft

    mod

    Maryy

    How many bags of cement do I need to cover an area 15tx13ft


    Hi Maryy
    This thread is over 7 years old now; you'd be better to start a new thread

    Sorry, commenting is no longer available on this discussion.

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