Pavers on Top of Existing Concrete

Discussion in 'Hardscaping' started by LandscapeMember, Aug 8, 2007.

  1. LandscapeMember

    LandscapeMember LawnSite Member
    from NJ
    Posts: 32

    I am not a big fan of placing pavers on top of concrete... I normally place one inch of concrete sand, then proceed as normal when dealing with existing concrete.

    I have a customer who wants their concrete patio which is only a year old (25 x 30 = 750 square feet) topped with pavers... his concrete guy said it would be cheaper to get the concrete pad and in the future get pavers on top. Interesting line of thinking. His concrete steps are another problem... I have to deal with them too.

    I want to price this accordingly... Do you have any thoughts of a good price. My paver pricing depends on the job, I do not square foot price, but was thinking for this job, $8.50 - $9.00 a square foot would be fair. (this includes all materials and labor). They are requesting EP Henry Brickstone... The concrete is in great shape.

    Do you see any problems this customer will have in the future? With concrete moving/cracking?. The house is less then 2 years old and the ground still may be settling. I have only done a couple jobs with pavers over concrete and this will be the biggest one yet.
     
  2. MILSINC

    MILSINC LawnSite Member
    Posts: 175

    just don't guarantee it. tell them why. do the job, get paid when it needs to be repaired (and it will).
     
  3. zedosix

    zedosix LawnSite Silver Member
    Posts: 2,636

    I would just bond the pavers to the border of the patio and install the rest as normal. Place my sand and away you go. Even if the patio cracks I think it would be an easy fix. Another way would be to bond a thicker stone to the outside edge and place a small amount of sand then pavers. This way there is some room for adjustment in the future if required.
     
  4. neversatisfiedj

    neversatisfiedj LawnSite Bronze Member
    Posts: 1,028

    Just screed 3'4 inch sand in the field. Install and glue 3" PAVERS FOR BORDER. hAVE FUN ;)
     
  5. senatorcongressman

    senatorcongressman LawnSite Member
    from WDC
    Posts: 40

    Zedo6, NSJosh and all... If you bond the border course and dry-lay the field do you need to provide weep holes in the border course or some other way for rain water to escape? Or do you rely on the poly sand in the joints to direct head flow off the patio?
     
  6. neversatisfiedj

    neversatisfiedj LawnSite Bronze Member
    Posts: 1,028

    take a 12 inch wide piece of soil seperation matting (marafi) and put between the pavers and concrete before you screed sand. Ohh and yeah run your PL glue for the border course parallel to your soldier brick for drainage.
     
  7. Drew Gemma

    Drew Gemma LawnSite Bronze Member
    Posts: 1,510

    glue them all then poly sand I just looked at a job where they glued border then laid the rest on sand bed it all washed out over time less than one year
     
  8. neversatisfiedj

    neversatisfiedj LawnSite Bronze Member
    Posts: 1,028

    It won't wash out if you use fabric as I suggested. Say pricipal applies to a pavement butting to a seating wall. If you don't contain the sand with fabric, it WILL wash out. You could certainly use poly as well .
     
  9. zedosix

    zedosix LawnSite Silver Member
    Posts: 2,636

    What washed out? The sand?

    Use a good read (expensive) polymeric xp sand and like neversatisfied says run the glue parallel with the brick to let the water seep out. There should not be any problems with that method. When I first started bonding to concrete back in the days of "stonebond" we used to bond every brick to the porch, what a job that was. Now we bond just the border and there really are no problems.
     
  10. senatorcongressman

    senatorcongressman LawnSite Member
    from WDC
    Posts: 40

    Does this sketch roughly represent what you describe?

    (Notes: Green=soldier pavers, blue-gray=field pavers, blue=glue, black=fabric, brown=existing grade and joint sand is not shown)

    I recently replaced a concrete patio with a larger clay paver one, but the walk to the front of the house is in decent shape, so I was planning to lay right over it (once the weather cools off a bit :dizzy: )

    Walk layout.png
     

Share This Page