Whether you call it Austin stone, Lueders, or just plain limestone, we can clean it. Dark spots on your limestone are typically the result of an algae spore called Gloeocapsa magma, which produces a green or black bacteria to protect itself from UV rays.

These spores actually feed on limestone and can leave stains as they die off. We use the lowest possible pressure to clean away the surface contaminants and then apply an algaecide to kill off the rest. This process will likely need to be repeated several times until it yields the desired and typically most dramatic results.

If your home is of newer construction, it’s important to stay ahead of the growth to prevent stains. Many limestone homes in the Dallas area were built in the 20s and 30s and have significant build-up. That’s OK. While it may not be possible to get severely stained stone back to like-new condition, we can remove the dark spots and get the color looking consistent and fresh. Having Park Cities Power Wash come out when needed is a great way to prevent staining in the future. We can also seal your limestone to slow down the accumulation of algae and dirt.