Foam Backer Rod for Gaps Concrete Crack Filler Joints Foam Gap Fillers Caulk Saver Backing Rod Concrete Filler Rope Joint Filler (1/2 Inch X 33 Feet)

Worked great to fill in my cracked between the concrete blocks.

Simple product. I was happy with the quality of foam and ease of use.

Easy to work with

For backfilling saw cut concrete it works well. The packaging caused some but not many knots while working. Be sure to unroll before starting.

Used this product to block the light coming through the under cabinet lighting trim in a kitchen Remodel. Worked great, slid in between the trim and the cabinet.

the product was rolled up, so it reached me crooked maybe because it is too soft so it was out of shape, i have got a smaller size from a the market that is a lot tougher to maintain shape.

Larger than most cracks you're going to run into just a heads up you probably need much smaller than what you think so be careful buying this type of thing unless you've actually size the crack you're filling.

I have a sign on my front porch and it has a one inch gap around it. This helps keep spiders and bug from getting behind the sign and making a mess behind it.