SIKA Corporation 91065 Self Lev Sealant, 10-Ounce

Professional-Quality Self-Leveling Sealant That Makes Concrete Repairs Easy I've used several products for sealing concrete joints over the years, and Sikaflex continues to be one of the brands I trust. This self-leveling polyurethane sealant flows nicely into horizontal expansion joints, creating a smooth, professional-looking finish without having to spend time tooling the surface by hand. The sealant adheres well to properly prepared concrete and cures into a flexible, waterproof joint that should hold up well to changing weather conditions. I also like that it can be painted after it has fully cured, making it easier to blend repairs into the surrounding concrete if desired. Application is straightforward with a standard caulking gun, and the narrow nozzle allows for good control. Just be sure to thoroughly clean the joint before applying the sealant, as good surface preparation makes a big difference in the final result. One thing to keep in mind is that this is a self-leveling product, so it's intended for horizontal joints only. It's not suitable for vertical surfaces because it will flow before curing. Wearing disposable gloves is also a good idea since polyurethane sealants can be messy to clean off your hands. Bottom Line: This is a high-quality, professional-grade concrete joint sealant that's easy to apply, self-levels beautifully, and cures into a durable, flexible, waterproof seal. It's an excellent choice for driveways, sidewalks, garage floors, and other concrete joints, making it an easy 5-star recommendation.

Just the right sealant I needed, I like the self leveling action. Just make sure you clean the gap/crack then pour it

I have been using this product for many years. I think it is the best self leveling product on the market. I bought it this time for a long1/4in crack in my garage floor. I first blew out the crack, then inserted a pencil size, foam filler and pushed it down into the crack about 1/4-3/8in to seal the bottom of the crack. If you don't seal off the bottom of the crack or void....you will use/waste a lot of product. Fill the crack slowly keeping the material slightly proud and then be patient. It takes a couple of days to completely cure (depending on the thickness of the application). Good stuff, very durable and better than the BB store prices.

The self leveling property works well. It remains to be seen how durable the seal will be with time.

Wanted for a winter to pass before I wrote this review because I wanted to see how it would overwinter. It works great. It did not crack or shrink. My partner added a bit of sand granules on the top before it dried to make it blend in with current concrete and now blends in pretty good.