Cleaning glue from brick face

Discussion in 'Hardscaping' started by Outdoors_Unlimited, Apr 14, 2011.

  1. Outdoors_Unlimited

    Outdoors_Unlimited LawnSite Senior Member
    Posts: 449

    I have a client who has a wall in which the cap was glued to the retaining wall blocks. Whatever glue they used has left a stain on the face of the block.

    They have tried pressure washing, and it didn't work. What chemical could be used to clean this?

    I have pictures on my phone, if anyone knows how to upload pics from an android device.
    Posted via Mobile Device
     
  2. DVS Hardscaper

    DVS Hardscaper LawnSite Fanatic
    Posts: 6,412

    Is it smeared glue (from someone trying to clean it off with their fingers) or did color leach out of the glue?

    .
    Posted via Mobile Device
     
  3. rlitman

    rlitman LawnSite Bronze Member
    Posts: 1,539

    I'm trying to picture this.
    Was the glued down, and the glue left a stain on the top surface, opposite the glue?
    Or did glue drip down on the wall face? Or something entirely different.
     
  4. Outdoors_Unlimited

    Outdoors_Unlimited LawnSite Senior Member
    Posts: 449

    The glue color leached out from underneath the cap, and ran down the face of the wall.

    Thanks for your help guys!
    Posted via Mobile Device
     
  5. DVS Hardscaper

    DVS Hardscaper LawnSite Fanatic
    Posts: 6,412

    Email your pictures from your phone to your PC or laptop, and upload from there.

    .
    Posted via Mobile Device
     
  6. Outdoors_Unlimited

    Outdoors_Unlimited LawnSite Senior Member
    Posts: 449

    [​IMG]

    [​IMG]

    Pic upload?
    Posted via Mobile Device
     
  7. zedosix

    zedosix LawnSite Silver Member
    Posts: 2,629

    Sorry dude thats not glue, thats efflorescence. Pressure washing with hot water will reduce the effect.
     
  8. Outdoors_Unlimited

    Outdoors_Unlimited LawnSite Senior Member
    Posts: 449

    At first I thought it was efflorescence, but why is it only towards the "point" of block, and mostly near the top?

    I will try efflorescence cleaner with hot water pressure washing.
    Posted via Mobile Device
     
  9. zedosix

    zedosix LawnSite Silver Member
    Posts: 2,629

    Your first thought was correct. 2 things.....

    Likely a permacon product or belgard right?
    The back fill directly behind block is leaching thru the block, try putting clear stone directly behind the block and a layer of non woven. Cover with clay to direct water off the top and not behind.
     
  10. STL Ponds and Waterfalls

    STL Ponds and Waterfalls LawnSite Bronze Member
    Posts: 1,177

    This might be a dumb idea, but has anyone ever tried a water based concrete stain on something like this? Assuming you can get a stain in the same general colors.
     

Share This Page