Tenon Concrete & Masonry Dissolver - Remove Concrete, Cement, Mortar, Grout, Stucco, and Masonry from Tools, Mixers, Wood, Plastic, and Aluminum, Ready-to-Use, Non-Toxic (28 Ounce)

Works great on tin came off easy

After 8 years of renters it's time to replace the ceramic tile, that's beginning to resemble mosaic. I'm lucky that the sub-floor in this house is quality, solid plywood. I want to remove all the mortar & I was looking at 3 days of knee torture. This stuff popped up while I was looking for an air-scraper.I poured some of this liquid in a smaller container, the brushed it right on top or the mortar. I brushed this stuff on about a square foot of mortar, which soaked it up quickly. I was hoping it would soak through to the mortar in contact with the floor, so I put up some strong resistance to follow the man-code of not waiting, and just start wailing on the grout with my framing hammer (á la the opening scene of "2001 A Space Odyssey"). After a while the mortar was a kind of chalky-white, and when I hit my 1½" chisel, the mortar started coming off in pieces up to palm-sized.This stuff isn't exactly cheap, but it's a heck of a lot cheaper than two new knees.

When my new porch was poured, residue got on the house siding. This product removed it without damaging the siding. I will need to retouch the paint but it looks better.

Bought this product because it was recommended to have a product on hand after pouring concrete. Used product just as label said. Used nearly entire bottle, and only result I got was it dulled the paint finish. Didn’t even work on glass.

I was shocked at how fast it dissolved big clumps of concrete that had been on my truck for months, without damaging the paint.

I bought this to clean my masonry tools but it just creates a white gunk on the top of the mortar and is hard to clean up, I. don't recommend this product

I get the impression that people think you can make a product that will just eat through any cementatious product of any thickness or hardness. This isn't possible even with the strongest acids. But this stuff does disolve thinset. I'm totally impressed. It's non-toxic, non-corrosive, and yes you may need a couple of bottles depending on how much you need to dissolve, but this works better than a wire-brush or razor or all sorts of other options. So know what you're getting here: if you left mortar all over a bunch of flagstone, no this wont help that much. If you have thinset on tile or stacked stone because you're not a great mason, this works impressively well. But you might need a couple of bottles.

I was super worried that it would rip the car paint or the clear coat off but no problem. got all the concrete splashes of the car panels. I follow the instructions closely and had to repeat everything three or four times but it was worth it! cleanup is easy.