Parking Garage Power Washing in Clayton, MO

We recently power washed a single level parking garage in Clayton, MO to prepare the surface for new parking lines. The structure had years of built up dirt and oil that needed to be removed before repainting could begin. At Exterior Cleaning Solutions STL we handled the pressure washing and degreasing so the contractor could follow with fresh striping.

The project called for a careful approach because the floor needed more than a quick rinse. We applied a light degreasing solution to affected areas to break up oil and grease deposits. That step targeted the stubborn stains without over-saturating the concrete, since the repainting crew needed a dry, clean surface afterward.

After the degreaser did its work, we surface cleaned the entire floor using pressure washing equipment sized for a parking structure. Surface cleaning removes dirt, sand, and residue that sit on top of the concrete rather than cutting deep into the material. This method is efficient for large, flat areas like single level garages because it clears wide swaths of debris and reveals the original floor color.

Our work removed tons of dirt and oil left behind over the years, restoring the floor to a much cleaner condition. The result was a consistent, debris-free surface that was ready for the next step, repainting the parking lines. Cleaning first helps the striping adhere and look uniform across the whole garage.

Throughout the project we focused on minimizing disruption to the facility in Clayton, MO. Because this was a single level structure, we were able to move through zones sequentially and leave cleaned areas accessible for line painting as soon as they were dry. That kept the overall schedule moving and allowed the parking line contractor to start when our cleaning was complete.

Working with Exterior Cleaning Solutions STL means you get a straightforward, project-focused approach to parking garage cleaning and pressure washing. We matched the cleaning method to the needs of the space, using a light degreaser where needed and surface cleaning for broad coverage. The finished floor provides a clean base for fresh parking lines and helps the facility look well maintained.

If you have a parking structure that needs power washing before maintenance or repainting, our St. Louis team can assess the condition and perform targeted cleaning to get the job ready. Proper prep makes the repainting step go more smoothly, and a clean, degreased floor is the first step toward long-lasting striping results.

Location: Clayton, MO