R.J. Francis

We are in the middle of a basement remodel, the client chose the acid stain for the floor finish.
The house was built in the 70's their was no sealer or grease on the floor,
We cleaned the floor with 40 grit buffing pads on a machine, then proceeded to mop (almost 8 hours) until the water was clean, the next day we mopped again. Then let the slab dry for 72 hours. We used 2 coats of stain, 2 coats of water based sealer and 3 coats of industrial floor finish all made by H & C, The floor looked great, we let it sit for a week and came and did the millwork, when we taped the floor to spray it took the stain right off to bare concrete, we tested differant areas with differant tapes all with the same conclusion. Sherwins rep came out and did some field tests, they took samples and are saying its going to be 4 weeks until we get results of why its failed.

Has anyone ran into this or have heard anything like this happening
Any input would be great, bc im stressing out over the whole situation

user50444

Don't take this question as insulting,... you nuetralized + washed residue, right? Once I had a similar situation... it all came down to the floor surface being damaged from carbon monoxide poisoning. Blue taped off an area to do phase two of a house floor + pulled up waterborne expoxy + stain. Sherwin has giving me there H & C sample kit, but have not yet tried them out.

R.J. Francis

No offense taken,
We neutrilized both coats with baking soda/water mix, the funny thing is that we did samples in the future bathroom, that is getting tiled and that is laying down fine. I think we got a bad batch. I heard that the acid stain has a shelf life(nowhere in specs) after a certain amount of months you need to add acid that dissapated from sitting in containers

user50444

R.J.
Did you ever find anything new out on your problem?
I did have issues with potentially old stain. Prizm's earthen clay + brickforms maghogany. But on two seperate occasions, 90% of the stain color washed off with residue cleaning.

Tscarborough

Acid stain causes a reaction that can not be pulled up by tape. If the concrete changed colors, then the only thing you could have pulled up is the sealer.

__________________
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Tscarborough

And just as an FYI, household ammonia works much better than baking soda to neutralize acid stain. Much easier to clean up.

__________________
It ain't Rocket Science unless you are building rockets.

user50444

there could be a scenario of a weak surface on floor, stain reacting (as it does), sealer bonding to surface, + tape bonding more to sealer, + when pulled,... coming off with. Ammonia + acid stain mixed together.... rather the off-gas vapors from baking soda.

Wolfgang

Did you do a moisture test on the slab after you thought it was dry? Even then it shouldnt have pulled it bare. TScarborough's answer makes the most sense.

tsb

I run into this pretty often. Never put tape on an acrylic sealed/waxed floor.

here's an article I googled for ya that pertains to stained floors and plasticizer migration: http://gayegoodman.com/archives/041304.html

Sometimes acid stains penetrate and react "deeply", sometimes they don't. I'd be willing to bet that the areas where the stain was "pulled up" still has some color, it just doesn't have the sealer to enhance the color.

So that's what I think happened, how to fix it's a whole 'nother story.