Acid stain and concrete dyes are both methods of applying colour to new and old concrete floors and surfaces. They can be applied to plain or previously coloured concrete. Acid stain contains harmless, non-toxic chemicals that react with the lime in concrete to create a permanent colour. There are many different colours of acid stain. After application, the stains are thoroughly cleaned, neutralized, and dried before sealing.

Concrete dyes contain very fine colouring agents that penetrate deep into the concrete surface to create a lasting colour effect. Stencils can be used in combination with concrete dyes to create some wonderful, creative effects. After application, the floor is sealed.