“When you etch concrete, the acid leaves both a visual and porosity change. The surface is no longer smooth and you can see and feel that the concrete is opened up,” Doolan explains.

To ensure that the finish bonds well with the concrete, you should use a technique called "etching" before putting on a finishing compound like sealant or paint. Etching is a process that makes ...

That is because concrete countertops, though quite durable, are also susceptible to staining and etching. Staining, in the context of concrete countertops, occurs when substances penetrate the ...