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PL VS Mortar For Pavers

Discussion in 'Hardscaping' started by traderfjp, Mar 18, 2010.

  1. traderfjp

    traderfjp LawnSite Member
    Posts: 63

    I'm installing pavers over a cement patio that is in great shape. This is in NY so there is thawing a freezing. I need to secure the soldier course and then lay the inside pavers on sand. My question is will PL eventually pop - am I better off using mortar or a versabond instead?

    Thanks
     
  2. brickpuller

    brickpuller Banned
    Posts: 62

    The PL should work. Why are you laying the inside pavers on sand?
     
  3. traderfjp

    traderfjp LawnSite Member
    Posts: 63

    Drainage and because there is no chance of them popping up. That's a lot of PL for a 600 sq. ft. patio. My dealer is telling me if I don't seal the joint with mortar and just use PL that water can get under the paver and pop the PL bond. I would prefer to use PL to save time but I want to do the job right.
     
  4. Rex Mann

    Rex Mann LawnSite Senior Member
    Posts: 621

    use a geo textile over the concrete. Next use a setting band of sand. The sand will compensate for and lows and highs in the concrete and any inconsistencies in paver thickness.

    You should also drill at least one hole in the lowest point. 2 inch diameter all the way thru the concrete. fill it with pea gravel cover with the geo textile.
    the edge i would just use PL it is made to be outside in freeze thaw. Just need to get the water out from the setting bed.

    Peace,

    Rex

    http://PaversInstalled.Com
     
  5. traderfjp

    traderfjp LawnSite Member
    Posts: 63

    Have you used PL with success? Do I still have to mortar the joints of the soldier course or can I just sweep sand. Weep holes are a great idea. I've never used a geotextile fabric. What would this do? The concrete is not crackes so I'm not worried about sand migrating out. Thanks again.
     
  6. Rex Mann

    Rex Mann LawnSite Senior Member
    Posts: 621

    geo textile will prevent the bedding sand from migrating down into any future cracks. I would just use sweep sand

    Peace,

    Rex

    http://paversinstralled.com
     
  7. traderfjp

    traderfjp LawnSite Member
    Posts: 63

    The patio is crack free so I don't think I need the fabric. It's my understanding that fabric is mainly used in clay soils / wetter environments to keep the base seperated from the soil it's laying on. I need to use PL for the coping on the pool too. I just would hate to use it and have everything pop.
     
  8. bigviclbi

    bigviclbi LawnSite Senior Member
    from nj
    Posts: 894

    You are supposed to use fabric. Go to ICPI and look up a concrete overlay schematic you can print it out.
     
  9. bigviclbi

    bigviclbi LawnSite Senior Member
    from nj
    Posts: 894

    You are supposed to use fabric. Go to ICPI and look up a concrete overlay schematic you can print it out.
     
  10. paponte

    paponte LawnSite Silver Member
    Posts: 2,366

    Like Rex said I would use the fabric also, and flip it up against your soldier course to keep sand from migrating through your pavers. If you are talking about PL'ing to existing concrete you can do that, but I would not PL to the steel pool wall itself. Any flex in the wall will pop your coping. your also going to want to leave a 1/2" gap between your coping and your paver field and fill with caulking to keep your pavers from popping the coping when they heave in winter.
     

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