Many things can be detrimental to a concrete surface such as harsh de-icing salts, moisture from freeze/thaw cycles, discoloration from UV rays, vehicle oil stains, etc.
If you want your concrete to last a long time and stay protected, then it is recommended to have concrete sealed every 2 years. Just like you would keep up on your landscaping maintenance, it is important to not neglect wash and re-sealing your concrete.
Some sealers on the market have only 5% acrylic solids (cure & seal) which have little to no protection. Our sealer is commercial-grade and has maximum protection with about 35% solids to solvent ratio.
For interior concrete surfaces, we offer a both clear epoxy sealer or water based acrylic sealer which has no VOC's and excellent protection.
Waterproof coatings such as Xypex and plastering are also services we have available.