Concrete Countertop Stain Resistance
The most important factor to understand when it comes to concrete countertop's stain resistance is the type of sealer used. Any unsealed, natural state of concrete will stain because concrete is porous. In order for concrete to be used as a countertop material, it must be sealed. The good news is that there are a variety of concrete countertop sealers on the market, many of which can create a nearly impermeable surface that is highly tolerant and resistant to staining.
Concrete countertops are not a guaranteed non-staining surface. The concrete itself is virtually indestructible, but staining occurs when the sealer is compromised. This can happen when cutting, chopping or preparing food affects the sealer, or when a hot pan is placed directly on the sealer. Spills from juices, wine and other types of liquid typically do not affect the countertop surface when they are cleaned up quickly.
With a few precautions, concrete can be one of the most durable surfaces for countertops. It is best to talk with your concrete countertop contractor about how their countertops are sealed and how they can resist staining.