Properly installed exterior concrete needs little maintenance. If you’ve selected an exterior concrete product from AHH, we use air entrained, 3500 psi concrete with a sealer applied to it to allow the concrete to cure properly. This sealer is intended as a curing agent only and should be expected to wear off quickly. Proper composition and curing of concrete is crucial to it holding up over many years of freeze thaw cycles in our climate. Concrete reaches its final rated strength in about 28 days but continues to cure for many months. We recommend that over the first couple winters, no salt or other chemicals be applied to your exterior concrete. Salting your driveway in the long run does not chemically damage it, but it causes more freeze thaw cycles to occur in a given season, thus speeding up the concrete’s wear. We do not warrant against damage (usually spalling) from salt or chemicals applied to your concrete or chemicals dripping from parked vehicles that were picked up elsewhere. Periodically sealing your concrete driveway is not required, but if you choose to do so, use a high quality sealer such as Sonneborn Kure 'n' Seal. Avoid the cheap wax based products available at home centers. For more information visit the Ohio Ready Mix Concrete Association @ www.ohioconcrete.org.