There are two main types of concrete crack filler: self-leveling and non-sag. Self-leveling concrete crack filler has a runny, gooey consistency that flows into cracks and fills nooks and crannies ...

If you've ever filled a large gap with caulk, only to watch it pull away from the edges as it dries, you've experienced one of the primary reasons that backer rod exists. Backer rod does more than ...