Block Adhesive

Discussion in 'Hardscaping' started by DVS Hardscaper, Jun 14, 2007.

  1. Stillwater

    Stillwater LawnSite Platinum Member
    Posts: 4,834

    Awhile ago I tested liquid nails on some Pennsylvania field stone it was impossible to seperate the stone without destroying it, impressed I soaked the glued stone in water for a week or 2 still destroyed the stone getting it apart. The stuff is tenacious.
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  2. scagrider22

    scagrider22 LawnSite Bronze Member
    Posts: 1,272

    We use PL poly in the 29 oz tubes, a case of 12 is around $90.00 I've tried the gator glue and it didn't hold as well and cost more than the PL poly. The PL poly is also stronger than the PL landscape block adhesive.
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  3. amscapes03

    amscapes03 LawnSite Senior Member
    Posts: 398

    I agree, the Basic PL is stronger than the PL Landscape Adhesive. The only difference I've found between the two (aside from strength) was the Landscape PL doesn't ooze and run like the regular PL does when you stop squeezing the trigger and release the catch.
     
  4. jmkr02

    jmkr02 LawnSite Senior Member
    Posts: 264

    is the pl the stuff made by locktite? We switched to srw after the I think it was the pl that went to a low voc non stick formula.
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  5. jmkr02

    jmkr02 LawnSite Senior Member
    Posts: 264

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  6. scagrider22

    scagrider22 LawnSite Bronze Member
    Posts: 1,272

    I don't know anything about the formulas but I do know many of the block adhesives dry hard causing them to pop loose during freeze and thaw cycles. The PL polyurethane doesn't dry hard so it can shift without coming loose. I'm no scientist but this is what I have learned after years experience.
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  7. dnc19694339

    dnc19694339 LawnSite Member
    Posts: 208

    We use PL Premium. Have to get the premium. Get it at Lowes by the case its about $6/tube.
     
  8. jmkr02

    jmkr02 LawnSite Senior Member
    Posts: 264

    I agree with the pliability pulling walls apart after 15 to 20 years to make way for additions the pliable stuff holds.
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