Resealing is applying a fresh coat of sealer to concrete once the original layer has worn. Film-forming sealers break down from traffic, sunlight, and cleaning. Resealing restores protection and often brings back color and sheen. How often it’s needed depends on traffic, exposure, and the sealer type.
When Resealing Concrete Is Due
Most concrete contractors recommend resealing every 2 to 5 years. Your floor usually tells you sooner. A simple check: sprinkle water on it. If the water no longer beads up and soaks in, the protection is wearing thin. On a stained floor, dull paths in walkways and doorways are another sign.
Think of it like re-treating a deck. Catch it while the finish is thin, not after the wood underneath is weathered. On a stained floor, resealing in time keeps the color protected, especially with a water-based stain that leans on its sealer.
What to Ask Before Resealing
Ask what sealer is on the floor now. It’s best to use the same type of sealer used originally, and if you switch, the old sealer may need to come off because the products may not be compatible. That’s one reason to keep records after any sealing or staining job.
Resealing FAQ
How often should concrete be resealed?
Plan on every 2 to 5 years for most sealed concrete. High-traffic floors and outdoor slabs exposed to sun and salt may need it sooner. The water-bead test is the easiest way to check.
Can I reseal my concrete?
Yes. The floor needs to be clean and fully dry first, since sealing damp concrete can leave a cloudy haze. The new coat should match or be compatible with the old one.