The concrete countertop sealer we use is called EAP and is made by Kinloch here in Austin, Texas.
Re-applying sealer every year to concrete countertops used to be the case. Within the last 5 years, newer sealer technology (like Kinloch USA) has eliminated the need for that. You can read about the new sealer technologies at http://www.concretenetwork.com/products-sealer/concrete-countertop-sealer.html
The Concrete Network is our industry’s trade publication and the authority on all things decorative concrete – including concrete acid staining.
We have been using the Kinlock for over 4 years now and have never had one call back and never heard of anyone having to reseal it.
Plus, it’s so hard and durable, that we can put it on thinner than most sealers and the satin finish resembles a beautiful hand rubbed beeswax look.
Cheaper sealers might have to be reapplied every year, but we only use high quality products.
From The Manufacturer:
EAP – Nanotechnology Surface Enhancer and Food Acid Etch-Proofing Sealer Stone and Concrete Countertop Fabricators and Decorative Concrete Flooring Professionals who want to prevent food-acid etching on masonry and marble surfaces depend on EAP.