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Stamped concrete possibly put solvent sealer over water based sealer. What to do

Stamped concrete possibly put solvent sealer over water based sealer. What to do

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  #1  
Old 03-02-18, 04:26 PM
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Stamped concrete possibly put solvent sealer over water based sealer. What to do

Long story short, I had a stamped concrete patio poured 2yrs ago this May. The contractor stamped it too late so some areas had some crumbling. It looked fine for the first year, but over the first winter, some areas started to break away. I was pretty busy with project last summer and didn't want to reseal the patio until I was done. I ended up finishing up most of the projects and laying sod around October. So essentially I ran out of time, to do probably one of the easier jobs.

With the cold weather approaching I paid one of the workers who tar'd my driveway to come back and spray wet look solvent sealer over the patio to fill the cracks, and protect it from the winter and do any further damage. It was 60 degrees that day. He came back the next day when I was at work and it was high 30's low 40's and did it. So I am not sure if it looks milky/cloudy because it was done in the cold weather, or because the original sealer was water based...

I would like to fix it this summer, and looking over how to remove the sealer, there are different methods for solvent vs water based. So now I am not sure what the original sealer was.

What is the best approach for stripping the sealer off?


 
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  #2  
Old 03-03-18, 04:06 AM
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With the possibility of damaging the concrete or color I think I would just let time take it's course!
 
  #3  
Old 03-03-18, 04:16 AM
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It's not uncommon for water based sealers to turn cloudy/milky when wet but they go back clear when dry. I'm guessing that the solvent based sealer is trapping moisture in the water based sealer. I agree with Marq - leave it alone and see how it does.
 
  #4  
Old 03-06-18, 10:48 AM
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I noticed the other day when the weather was warmer and I was in tge backyard, it looks like those cloudy areas are flaking.
 
  #5  
Old 03-06-18, 01:16 PM
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The moisture in/under the waterbased sealer may have prevented the solvent based sealer from adhering properly.
Have you contacted the guy that originally did the stamp work for advice?
 
  #6  
Old 03-08-18, 08:39 AM
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Yea, he knows he did a shotty job. Ignored my phone calls and had a few no shows. So unless I intended to pursue him in court he is out of the picture.

wondering it s good power washing will knock off the flakey parts. I did see a youtube video of a guy who resealed his stamped patio mentioned the sealer used would dissolve the old one while
applyinga new coat. Sounds like a perfect solution, but I can't find much info on this type of product.

*I appologize for delayed responses. I am not getting the email alerts for new replies.
 
  #7  
Old 03-08-18, 01:07 PM
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There are solvent bases stains and sealers that partially dissolve the underlying coat creating a good bond BUT I don't know if that works for dissimilar coatings.

Pressure washing should remove the loose stuff.
 
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