When I first saw the calk it looked like the same stuff you can get at the box stores. (Perhaps some have the same stuff, but when I checked the one by my house didn't.) This is good stuff. Spread it on liberally on a clean surface and it sets up with a good waterproof seal. Then tape the seam with seam tape.

We have both new concrete block and very old (1920's) concrete for a foundation. The seal tape worked well on the new concrete but didn't stick well to the old concrete. I'm glad I ordered this caulk. It did a great job sticking to the very rough old concrete. Even if you can find this at a big box store, it is more expensive than ordering here. Well worth it.

The Foundation Seal Tape did not hold very well on some of the concrete Foundation blocks. I'm glad I ordered this caulk. It did a great job sticking to the concrete blocks. Even if you can find this at a big box store, it is more expensive than ordering here. Well worth it.

This caulk is easy to use. I use it at the top of my crawlspace wall plastic sheeting to make a seal above the adhesive strip. It makes a neat job and has never let loose of the sheeting.

worked better then i thought it would