Rust-Oleum 301012 Concrete Patch & Repair, 24 oz, Gray

This product was great. It was rather easy to mix, fill, and level out. I used it before doing my rock solid garage concrete flooring, and it did a great job filling cracks. I would recommend picking up some quikrete concrete repair and filling large holes or cracks first, once they cure, grind them smooth, and then go over the top of them with this. This rustoleum crack filler was great for sealing in the quickrete, and filling in cracks. It sanded down nicely and easily to get rid of the raised edge from application. I used a soft applicator, an old auto body filler type one to mix, and apply. That worked well for scraping most access off and also being flexible around areas that weren’t exactly level. After sanding this product down, and applying the rock solid polycuramine floor coat, I couldn’t see this product through it. In reviews, and videos that you can, I think they either didn’t sand it or maybe didn’t apply the floor coat thick enough. I used the light gray floor coat kit, this stuff applies gray, so could also be part of why you can’t see it. Overall I am very satisfied. I have plenty left over also so I can help friends with their garages now that they have seen how mine turned out. I recommend only mixing a little at a time. If you run out you can just simply mix more. I used 1 popsicle sticks per container to grab it out and the soft applicator to mix and finally apply it. I wouldn’t recommend using a hard putty knife and grabbing some out of one can, and dipping into the next with a dirty knife and mixing it like that. I saw that on several videos. When you go back to use it in the future I’d imagine there will be rocks or something of activated material mixed in. The packaging says this can also be used to help anchor in screws into masonry, so I will be saving this as a future tool/ trick to help get a job done. Take care of your product and Itl be there to serve again!

I decided to clean, patch and stain my boring front porch when I re- made my porch this summer. It had a lot of cracks. I took all the concrete patch products in Lowes, chose a nice patio furniture display to sit and I read them all. I chose the Rustoleum. It's easy to work with and it dries rock hard. I mixed it in small batches because it dries in about 20 minutes. Once it's dry it's harder than the concrete. I sanded the seams down flat using a grinder with a sanding disc. I am really happy with how it turned out. I ended up painting the seams, they are now part of the final result. I wanted a turquoise stone look. So I used the patched seams in the design. I was then asked to repair the cracks in a neighbors very large, very cracked front porch floor. That also came out great, and those were bad cracks. I've used 3 boxes of this concrete patch, it's well worth the cost.

Messy but worth it

Was going to epoxy coat my floor with a more industrial epoxy than what Rust Oleum offers, but honestly couldn't find a product to patch that looked easy to work with, so I thought I would give this one a try. Not disappointed at all. However some prep and careful use is needed. First off, it applies well after mixing and honestly is more "liquidy" than I thought it was going to be, which worked to my advantage, definitely not for vertical surfaces only things on the ground. It applied nice and lasted long enough for me to "play" with it to get the shape and coverage I needed. I successfully epoxy coated my floor after this and the best looking parts were the parts that had this patch on it. However again proper prep is needed. After letting this product cure overnight I sanded this product down with 100 sand paper. I then vacuumed it all up and etched the entire surface (HCl)....not sure if it helped on this product but that's what I did and it worked out. I would say there is slight "shrinkage" and if I was going to do it over I would def "bubble" up some on the pockets that were actual craters. I actually used this product to recreate a nice line at my relief cut too, which was a huge success as I had a big crack on the cut that had a lot of material missing. Would have been five stars if no shrinkage. But honestly I'd give it 4.5 if I could. See photos for before and after on my relief cut fix

Fantastic. Dries fast so only mix 1/2 at a time. Easy to mix and use. I used a putty knife for my 1-2’ wide cracks. Happy with it just wish there was more for the dollar.

Worked really well for filling small cracks in my garage floor before painting . It does take a little longer to cure in colder temps. Sand smooth with a flap disk on a grinder!

Wow what a very Amazing product. First let me say that I am Not a professional contractor. I am just your everyday handyman and so over the decades I have used a few products that would promise you the world but this is one of the few times that the products has exceeded the marketing department. Hats off to,those brilliant engineers that are responsible for creating this product. In fact I personally think that Rust-Oleum should at least triple the pay of all of those very intelligent men and women that worked on developing this. I used it for some crack repairs but a lot of it and I used 5. - 24 oz batches of it to put a skim coat on some existing painted concrete the was in doors. The deepest repair I had was no more than 1/4 inch deep and within 4 to 6 hours it was very hard and and after 24 hours it was hard as a rock. I decided to sand it a little bit so the floor paint that I put over it had a little something to hold on to and now it is still looking great. Thanks so much again for such a great product