Fence posts and dry mix vs wet mix

Discussion in 'Builders' Talk' started by macadonald, Apr 27, 2009.

  1. macadonald

    macadonald New Member

    Hello,

    I am about to put up a new fence and need to set the concrete fence posts. Can anyone tell me whether I'm better using a dry mix concrete or more of a wet mix (any suggestions on mix quantities would be great)?

    I have heard that dry mix sets harder but takes a bit longer to set, which is fine by me. lastly, is there a suggested depth that the posts need to be buried?

    Thanks guys
  2. N. Green

    N. Green New Member

    Use a wet mix defiantly.
    1 part sand
    2 parts sand
    4 parts stone -that mix is more than strong enough.
    A third of the length of the post in the ground would be over-kill. A quarter is ok. Try to get 6-8 inch of concrete all round the posts.
  3. N. Green

    N. Green New Member

    Use a wet mix definitely
    1 part sand
    2 parts sand
    4 parts stone -that mix is more than strong enough.
    A third of the lengh of the post in thr ground would be over-kill. A quarter is ok. Try to get 6-8 inch of concrete all round the posts.
  4. mjp

    mjp New Member

    you could even put 1 part cement in there . Sorry N Green Couldn't resist
  5. N. Green

    N. Green New Member

    Thats not a bad idea-mjp
  6. joinerjohn

    joinerjohn New Member

    And dont use a wet mix defiantly
  7. joinerjohn

    joinerjohn New Member

    But Definately put some cement in :)
  8. chippie244

    chippie244 Well-Known Member

    Stick 2 foot in the ground.
  9. chippie244

    chippie244 Well-Known Member

    How many posts are you putting up?
  10. ponty01.

    ponty01. New Member

    I have done 2956 posts
  11. ponty01.

    ponty01. New Member

    Sorry, i have done more than I thought, its 3957
  12. Mr. Handyandy

    Mr. Handyandy Screwfix Select

    But Definately put some cement in



    even Definitely! :)


    Mr. HandyAndy - Really
  13. mikejoiner

    mikejoiner Member

  14. Moto Slug

    Moto Slug New Member

    Another tip when setting in new fence posts is not to sit the post on wet concrete, once you have dug the hole to its correct depth, drop in about 1 to 2 inches of small stones or chippings, sit the post on this and then concrete in the normal way.
    What this does is to keep the end of the post off of any damp soil, and should any water find its way down between the post and concrete it can just soak away.
    If the post is encased in concrete around the bottom, then any water finding its way down will just sit at the bottom of the of the post, unable to get out it will rot out the post double quick time.
    Moto Slug
  15. chippie244

    chippie244 Well-Known Member

    Sorry, i have done more than I thought, its 3957

    And all a waste of space :^O
  16. Mr GrimNasty

    Mr GrimNasty Active Member

    Concrete post rot.... whatever next!
  17. macadonald

    macadonald New Member

    Thanks everyone,

    I'm putting in 10 8ft concrete posts btw. So my understanding is a wet mix according to the amounts recommended (with cement :)).

    Thanks

    Kyle
  18. Moto Slug

    Moto Slug New Member

    Durrr, I never raed it properly did I.

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