how long do you have to wait to seal concrete
Experts recommend using penetrating sealers outdoors because it sinks down into the concrete and has a more natural, matte finish. A sealer should be applied after fresh concrete has cured. Most contractors wait 7 to 14 days, but the official time for curing is 28 days. If you are having a driveway installed at the same time, it should also be sealed. On the other hand, if you're resealing your existing patio it can be more cost effective to seal your driveway too.