New concrete countertops need no seal.(Outfront_design)(Brief Article)

After rejecting more than 100 sealers for their concrete countertops, Chris Keown and his colleagues at Concrete Canvas created their own formula.

The proprietary treatment differs from penetrating and topical sealers in that it alters the concrete's chemistry. Applied to concrete after it cures, the formula makes the concrete tougher, less permeable and more stain-resistant, Keown says. It also resists scratches and heat and does not impart an artificial sheen. Tests indicate the product wears