Removing stains from concrete
Tired of those ugly grease and oil spots making your concrete look like the floor of an auto shop?
These spots stick out like a sore thumb and are the reason why cement can be one of the most difficult surfaces to maintain and keep looking its best.
Dirt, oil, grease and grime are no match for the power of a pressure washer though. A little know-how and the right accessories will enable you to get that concrete as clean as the day it was poured.
It’s best to divide up your project into multiple sections. This will help to guide your stride and ensure the soap gets washed away before it dries.
The first step is to apply detergent, giving it 5 to 10 minutes to work into the concrete. Make sure to reapply soapy water to any areas that start to dry.
Once the soap has had time to settle in, the dirt and oils should be starting to loosen from the concrete.
Spray blast it clean
When the detergent has done its job, switch to a general high pressure spray pattern and rinse away the soapy grime.
Be sure that you move in smooth, consistent motions so you don’t leave streaks. Be careful not to miss any spots, or they’ll be noticeable. Clean away the soap and grime in even, sweeping motions and take your time. This is not the kind of project you want to rush.
For areas that are heavily soiled, you may need to make a few extra sweeping motions. It can help to also slow down over those areas and let the pressure washer work its magic.