Concrete residue on Pavers?

Discussion in 'Landscape Architecture and Design' started by RwADesigner, Dec 12, 2002.

  1. RwADesigner

    RwADesigner LawnSite Member
    Messages: 107

    For any of you that lay pavers...Have you ever installed pavers that had a light white concrete residue on the top of them? We installed 6 pallets and one pallet had that residue on them. We called the Pavestone company and asked them about it and they told us that it will eventually wear off after about 4-6 months. Or just use some efflorescence cleaner they sell. We bought the cleaner and used as described, but didnt even budge the residue. If any of you have ran into this problem before and know the solution please help

  2. devildog

    devildog LawnSite Senior Member
    from sc
    Messages: 270

    Yes, and listened to the customer complain (2 months) to the point we just brought in others and ate the redo. Our vendor worked it out with us. They've never shipped (us) a bad pour since then. With Regards... devildog
  3. Stonehenge

    Stonehenge LawnSite Bronze Member
    from Midwest
    Messages: 1,276

    The residue you saw is called efflorescence - hence the efflorescence cleaner.

    The cleaner is an acid, and usually a diluted one. Too strong and it will eat right through the paver. Too weak and it doesn't clean.

    They were right, that usually it just wears off. Sometimes in a month, sometimes in 2 years.

    Some paver mfgs have a harder time with this than others, and it doesn't matter if it's clay or concrete - they both can get it. Thy puyt chemicals into the works when they mfg the pavers to cut down on this, but sometimes it still comes through.

    Your best bet is to look the pavers over when they are delivered, or when you pick them up. Don't accept the ones with the residue.

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