Self-leveling sealant is a pourable joint sealant that flows into horizontal concrete joints and settles into a smooth, flat surface on its own, with no tooling required.
In depth
On flatwork like driveways and sidewalks, self-leveling polyurethane sealants are the standard for sealing joints and cracks. They flow to fill the joint completely, bond to both walls, and stay flexible through freeze-thaw cycles so the seal survives seasonal slab movement.
The job of the sealant is not cosmetic. Every unsealed joint is an entry point for water, and water under a slab is what erodes soil, creates voids, and causes settlement. A few tubes of sealant protect thousands of dollars of concrete.
How Acme applies it. Sealing joints after polyjacking is our standard recommendation because it keeps water from re-creating the voids we just filled. We advise a quality self-leveling polyurethane sealant, with backer rod in wider joints.
Related terms: Joint Sealing, Backer Rod, Soil Washout, Under-Slab Void
Frequently asked questions
When should joints be sealed after concrete raising?
Any time after the foam cures, and same day is fine. The sooner joints are sealed, the sooner water stops reaching the soil below.
How long does self-leveling sealant last?
Quality polyurethane sealants typically last 5 to 10 or more years outdoors before needing touch-ups, far longer than rigid fillers that crack in the first winter.