Concrete Sealer, Bad Mixture

bosshog27

I recently re-sealed a job and had a bad result. The job is a stamp job that was sealed with J-25 and I followed directions from a salesman (bad idea) and mopped the concrete with xylene which mad it look great. I then applied a product call glaze n seal, which is a laquer product that I have used many times and had no problem. However this was the first time I applied it over a different product, and it looked great at first, but very soon began to turn white and is continually getting worse. Does anyone know any techniques and or products that will help me perminantly fix my problem. I understand that it will require maintenance and would love advice on products for that as well.

genecarp

you must chemically strip the sealer, no quick fix.

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JBBS

Next time use a real sealer

tom connelly

Did you thoroughly remove the xylene from the surface before you applied the new sealer.

You always want to make sure that sealers are compatable with one another before double coating, otherwise you will need to completely strip the existing sealant off. It's never a bad idea to strip the masonry sealant off anyhow, especially since you already used xylene, why not finish the job and pressure wash it off completely. Using a solvent on sealed masonary surfaces will cause blushing as it dissolves the seal, or if the sealant is not breathable or doesn't adhere properly you may have blushing and discoloration, as well as some peeling up with a little time.

What type of sealant was used? Siloxane based, Silane based, Silicate based, and so on and so on? Water or Solvent?

How long of a dwell time did you apply the xylene?

Laquer? I wouldn't use a laquer on concrete. Do you mean an acrylic polymer?

We recomend using only breathable sealants that have been lab tested and field proven, otherwise you may be asking for trouble down the road.

ProSoCo makes real good masonry sealants.
www.prosoco.com

Hydrozo from BASF also makes some good ones.
Tech. Support: 1-800-243-6739

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Hickory NC

bigbadjim

I had the same thing happen at a job last fall. It was stamped concrete and I applied stampsheen sealer at around six in the evening on a fairly warm september day. The next afternoon I came to the job site and couldn't believe my eyes! The slab had turned white all over it. It almost looked like a layer of icing on a cake.

I ended up using a product called Resolve. It contains xylene and is pretty strong smelling stuff. It softens the sealer and drives it into the concrete so a new layer of sealer can be applied. I applied it with a pump sprayer, you just wait until it evaporates. Then there was a white crusty layer of dried sealer left after it was done evaporating. I preasure washed that off and reapplied a second coat of sealer. Worked well for me. The second application of sealer turned out good.

I still don't really know what made the sealer turn white though. Over applicating?? Froze over night?? Don't know?

Concrete Firm

I'm not familiar with stampsheen, But I'm guessing it is a membrane sealer, Being september when you sealed it, I would say there was still moisture in the slab when you sealed it, So the moisture had nowhere to go with a layer of sealer on the surface. Causing the moisture to gather under the membrane.

A good stripper is Orange Peel, works great for removing Membrane sealers. As far as mopping Xylene on the surface, that is a not a good strategy, Xylene should only be mixed IN the sealer.

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concretegirl1

Seen it a thousand times; usually it's just moisture trapped. Give it a few hot sunny days and it usually goes away.
Concrete Decor magazine this month has a good article on sealers.

6stringmason

I would agree with this. Theres been a couple times where I sealed countertops too early and the result was my sealer would start turning white. For my case I sanded it off and waited a while longer and resealed./

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Kamps Masonry & Concrete Countertop Design Green Bay, WI
920-680-3195
Visit our website @
http://www.concretecountertopsdesign.com/

Sealworks

Contact sealworks all your concrete sealing and waterproof needs. just use au at end of website address

MasterBlaster

I do a lot of stamped concrete sealer removal with our wet abrasive blasting process.... hey it pays the bills.


Stamped concrete sealer removal on walkway before


Stamped concrete sealer removal on walkway after


After stamped concrete was resealed


Note how the sealer looks like paint after more than four coats


Stamped concrete sealer removed from walkway


After stamped concrete was resealed


Note how the stamped concrete sealer failed and started chipping


This is what it looked like with all sealer removed


After stamped concrete was resealed

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AtlanticGreenPro.com Surface Restoration
Surface Coating Removal Metal | Concrete | Stone | Brick | Wood | Composites | All Sealed Surfaces NJ, DE, PA, NY CT and MD
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MasterBlaster

This is another Stamped Concrete job we recently stripped the sealer from... note it was resealed before I was able to take the stripped surface photos... but it still turned out nice and looks brand new again.


Stamped concrete sealer before we removed it.


Stamped concrete resealed (note no photos of the surface stripped.


Stamped concrete sealer before we removed it.


Stamped concrete resealed (note no photos of the surface stripped.


Stamped concrete sealer before we removed it.


Stamped concrete resealed (note no photos of the surface stripped.


Stamped concrete sealer before we removed it.


Stamped concrete resealed (note no photos of the surface stripped.

When resealed the stamped concrete looks as good as new.

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AtlanticGreenPro.com Surface Restoration
Surface Coating Removal Metal | Concrete | Stone | Brick | Wood | Composites | All Sealed Surfaces NJ, DE, PA, NY CT and MD
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