Raised Patio on a existing concrete slab

Discussion in 'Hardscaping' started by jmkr02, Oct 3, 2012.

  1. jmkr02

    jmkr02 LawnSite Senior Member
    Posts: 264

    Customer called wants a 6-8" raised patio over the existing concrete pad. I need to meet the customer and see what they are looking at doing. "Other "experts" say good to go, but the concept to me makes me cringe. I say there is a chance of drainage issues, void space under slab... freeze thaw issues...

    I guess the base from a compressive stand point would be strong, but a raised paver patio is more permeable then the concrete.

    Then there is the intrest in using a wall block either on the slab ori around the perimeter.

    Arguments Please!
     
  2. alldayrj

    alldayrj LawnSite Gold Member
    Posts: 3,768

    Punch some holes in the slab with a jackhammer or hammerdrill. Or just rip it out. How big is it
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