"... home improvement shows where they just polish the concrete"

that would be 'high pressure' concrete, a special mix to be chemical/acid resistant, like used for gas station aprons

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics