One area contractors may want to pay particular attention to is staining. Contractors have the option of acid-based or water-based stains, but with environmental requirements becoming stricter, water-based stains are becoming more popular. "Water-based stains have an application technique you need to learn. Once you learn the technique you can achieve very close to the same look of an acid stain," Bontrager says.
Michael Del Col adds that decorative contractors should always keep an open mind. "Decorative concrete can be very personal. People can have a hand in the design and it can be fun and it can be playful," he says. "A contractor is not limited by what he sees in a store. A contractor is only limited by his or her imagination, what you design or what you envision the final product to be."