SAKRETE | Concrete & Mortar Dissolver | 28 oz

Works great and removed cement and mortar

This product was ineffective on a paper thin splash of concrete mix on a flat surface, which should be the easiest situation for removal. I applied two coats, fifteen minutes apart, per the instructions and then hit it with a 2200 psi pressure washer with a focus point nozzle. Did not budge. Tried second application and this time used a bristle brush agitator. Barely flaked some cement off with the pressure washer. This is the thinnest, weakest, easiest application I can think of for removing cement and this product was basically useless. I can scrub it off by hand in a similar area in five minutes.

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I've used this product twice since purchasing and it has worked easily and saved me money. I'll preface that I am a hobbyist, but concrete is concrete and concrete doesn't care who you ate. I make scales bricks for figures/dolls/collectibles and I accidentally left the bricks in too long, so had some cleanup. 1st pic = the product 2nd pic = the before dirty 3rd pic = the first round of cleaning 4th pic = the final result after touch-up TIPS - Read the instructions. Don't let the solution dry up or evaporate cause it's only going to harden. I spray, wait, and start cleaning. Midway, I spray the remaining again to make certain it stays moist/wet. Also, I don't spray with water. With gloved (nitrile) hands, I squish and rub the dissolved solution around to break it all up more. It will feel a bit like clay. THEN HOSE IT DOWN while continuing to work it with your fingers. Once again READ INSTRUCTIONS. After you rinse, let it FULLY DRY before you do a second round. I've used this on silicone and stainless steel with no issues. I LOVE this product! Thank, Sakrete!

I really, really wanted this to be a five star review. I saw a YouTube video where a guy sprayed this on a metal sheet with concrete splatter, waited about 15minutes and then hosed it down. The concrete started peeling off with minimal effort and a brush of his hand. That’s what I wanted. What I got was this: I sprayed it on, waited about 15 minutes and then I scrubbed and scrubbed. I sprayed again and scrubbed with a nylon brush. I sprayed again and scrubbed some more. Little pieces came of quickly but the bulk of the splatter was still there. I sprayed again (down to half the bottle now) and started scraping with a putty knife. The photo was taken before I went to the putty knife. Here are a few things to know: 1. It comes in a plastic bottle and despite the packing efforts it will leak a little. Packing was as good as can be expected but open your box and package outside when it comes. 2. Wear rubber gloves when you use it. I’m a man and don’t believe in reading instructions. After rubbing it with my unprotected hands for a while, it started to really irritate my skin. Ouch. 3. Read the instructions carefully and follow them. Yes, it’s a “natural” product but it potent. 4. Use it outside or in a well ventilated area so you don’t breath the fumes. 5. It’s not a spray on and hose off product. It takes lots and lots of elbow grease. 6. If concrete is on a painted surface, it WILL remove the paint as well as the concrete. 7. It worked...sort of. It’s better than scraping dry concrete off with a chisel. All in all I wasn’t disappointed but I wasn’t enamored. Maybe I dint get what I expected because my surface was painted. Maybe I didn’t act soon enough after the splatter got on the door to get it off. (It happened about a month and a half ago). Maybe I just had unreal expectations. In any case, I’d use it again but I will be prepared for some hard work.