“Pressure washing” is often used as a catch-all term for exterior cleaning, but pressure by itself does not define a professional job. Cleaning a driveway or sidewalk well involves water flow, pressure, equipment, cleaning chemistry, dwell time, technique, edging and a final rinse.
That is why two contractors with pressure washers can produce very different results.
PRESSURE IS A TOOL, NOT THE ENTIRE PROCESS
A pressure washer creates mechanical cleaning force, but professional concrete cleaning usually involves more than pointing a wand at the ground. Large flat areas are commonly cleaned with a surface cleaner, which keeps the cleaning pattern more consistent and reduces streaks that can come from wand-only work.
WHAT DOES A SURFACE CLEANER DO?
A professional surface cleaner uses rotating spray arms inside a round housing. Instead of concentrating spray into one narrow wand pattern, it cleans a wider area at a controlled distance. On suitable concrete, that can produce a more even result across driveways, sidewalks, patios and entrances.
WHY PRETREATMENT MATTERS
Florida concrete commonly develops dark organic growth, algae and discoloration. Pretreatment can help loosen contamination before mechanical cleaning begins, improving consistency around edges, heavier growth and textured concrete without simply increasing pressure.
WHAT PROFESSIONAL CONCRETE CLEANING USUALLY INCLUDES
- Inspect the surface for cracks, coatings, stains and unusual conditions.
- Pretreat where appropriate to address organic contamination.
- Surface clean suitable open concrete areas.
- Edge and detail around walls, landscaping, corners and steps.
- Rinse thoroughly and inspect the finished surface.
CAN EVERY STAIN BE REMOVED?
No. Rust, oil, fertilizer stains, paint, battery acid damage and irrigation staining can penetrate or chemically alter concrete. Some respond to specialty treatment; others can improve without fully disappearing. The realistic goal is a dramatic overall improvement without damaging the surface in pursuit of an impossible result.
CONCRETE IS DIFFERENT FROM PAVERS
A paver driveway contains joint sand that can be removed by aggressive pressure and surface cleaning. If pavers are being fully cleaned, re-sanded and sealed, replacing joint material can be part of the process. Otherwise, the method should account for preserving existing joints.
THE BOTTOM LINE
Professional concrete cleaning is about using the right combination of chemistry, flow, pressure, equipment and technique for the surface in front of you. Request a free, no-obligation in-person estimate for your driveway, sidewalk or concrete area.