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Paving

  • 19-08-2009 2:10pm
    #1
    billy-ray
    Registered Users, Registered Users 2 Posts: 17 ✭


    Hi, not sure if i'm in the correct forum but here goes....
    I'm looking to do a small paving job in my back garden, approx. 20sq. mts, and not sure if i can lay the blocks over existing concrete or is it essential to break up the old concrete?
    Thanks in advance for any help.


Comments

  • #2
    Carlow52
    Closed Accounts Posts: 2,389 ✭✭✭Carlow52


    best to dig out old and put down crushed stone, best in long run


  • #3
    aujopimur
    Registered Users, Registered Users 2 Posts: 3,953 ✭✭✭aujopimur


    If existing surface is sound pave over it, bed the slabs on a weak sand/cement mix.


  • #4
    De_man
    Registered Users, Registered Users 2 Posts: 552 ✭✭✭De_man


    aujopimur wrote: »
    If existing surface is sound pave over it, bed the slabs on a weak sand/cement mix.

    i agree with that, only one thing if you are putting the patio to the house and
    slabbing over existing paths -
    ensure you've got an adequate slope from the house and you have a minimum
    150mm distance to your damprove course (dpc)

    i.e. from top of your path allow 20mm mortar screed and say 50mm for slab
    then a 150mm gap


    have a look at www.pavingexpert.com


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