To clean bluestone, perform a spot test to determine the required soak time, mix the cleaning solution, apply the solution with a stiff push broom, allow it to sit, then scrub the stone with the push broom. Rinse the surface thoroughly, check for lingering stains, and clean further if necessary.
- Perform a spot test
Mix the cleaning solution with water, and remove debris from the bluestone surface. Pour the cleaning solution onto a hidden spot, and allow it to sit for 12 minutes. Scrub the area with a stiff brush. Keep testing with the cleaning solution until you determine the amount of time it takes for the cleaning solution to work.
- Mix the cleaning solution
Pour 5 gallons of warm water into a plastic bucket, and add the cleaning solution. Mix thoroughly.
- Apply the cleaning solution
Dip a stiff push broom into the cleaning solution, and brush it over the bluestone surface. Allow a generous amount of the liquid to splash onto the surface. If cleaning a large area, only apply the solution to sections of the space at a time. Wait the amount of time determined by the spot test.
- Scrub the bluestone
After the allotted soak time, go back over the surface with the push broom, scrubbing any stains.
- Rinse the surface
Use a targeted spray to wash the cleaning solution away completely.
- Complete the cleaning
Allow the surface to dry thoroughly, and then check for lingering spots or stains. Clean with extra solution, if necessary.