Sikaflex Self Leveling Sealant, Gray, Polyurethane with an Accelerated Curing Capacity for Sealing Horizontal Expansion Joints in Concrete, 10.1 fl. oz Cartridge (Pack of 4)

That amazon does not this item without damage. The product is good, i think... i wont know for a couple of years so all i know is that it is easy to use.and definitely looks better than the crack. But amazon doesnt protect the spout of this product from damage, and half of those i have ordered arrive with broken and bent spouts. The box the cartridge is shipped in is too big and the cartridge is allowed to shift and break its spout... which has a weaker support than 10oz cartridges

I had a wooden expansion joint that rotted out. I cleaned out the expansion joint and put in exterior foam, leaving about 1/2 inch for the self leveling sealant. I have a slight slope away from the house and just jammed some cardboard in the joint in a couple of spots until the sealant started setting up and then pulled out the cardboard and added a little more material. Don’t have more than a half inch (depth) space to fill, you’ll just waste material. It levels nicely but you have to manage any slope. It won’t stay put, it will run. It dries like flexible rubber. I used a 29oz tube and another half tube to do 18 feet by 1” wide by 1/2 “ deep.

Love this product for filling all kinds of cracks or leaking areas. the thickness is just right for leveling and will flow to the angle of the level...however I still find it a bit pricey for the amount you get....

I bought this to seal up the expansion cuts in the garage concrete. I noticed a while ago that the expansion cuts had done their job and there were cracks in the bottom of each cut, probably going down through the whole slab. I've got some radon issues here so i wanted to get something I could apply that would drip down and flow well enough to get a reasonably air tight seal in the cracks.I had to use quite a lot of the sealant but it did flow from the top of the cuts down to the bottom (the cut was too narrow to get even the smallest part of the tip inside it). The cracks are narrow enough that it didn't flow down the crack itself. I would not bet on that always working because this stuff is very runny and can easily flow down a crack. Fortunately the cracks at the bottom of my expansion joints are very small.It cleans up well off the sealed concrete in my garage. I'd hate to think about cleaning this off rough outside concrete. It's definitely not cheap but it's the kind of thing I want to only have to do once so a quality polyurethane seems like a good choice given that I may eventually paint the garage floor. For outdoor applications, where there's no chance I'll paint it, I may opt for silicone based because it resists UV better.

I LOVE this product. It’s so easy to use and does exactly as it claims. You just have to be sure you prep the surface correctly: I watched several YouTube videos on that first. It’s holding up perfectly after three years and lots of vehicle traffic.

This product is not for sealing vertical cracks and joints, horizontal only. I have a few wide gaps between slabs in my driveway and I was told that could undermine it and cause it to sink. I got some sand and filled in the gaps, leaving a half inch depth at the top. You put this stuff in your caulking gun and then basically just pour it in. It's a little thicker than honey and it will flow and fill in the area so you don't need to be as precise as with regular caulk. Just move along, allowing the caulk to ooze out as you go. It is self leveling and self sealing because it flows and makes contact with all the sides. It is supposed to remain stretchy and keep the water out for a long time. I can't say anything about that because I only just applied it but it has dried to a rubbery consistency and it looks great.

Arrived in perfect condition and on time. Worked great! Nice price too!

Why did you pick this product vs others?:Great for horizontal crack. I used 3/8 diamond crack chaser on the grinder and then used 3/8 for one crack and 1 inch for another large crack. This self leveling worked good. I put a block of wood at the end of the crack by the grass so it wouldn't all leak out. Sealed well.