To clean concrete effectively, use a power washer.
Power Washing Tips
- Most electric washers create 1300-1700 PSI with 1.5 GPM flow.
- For outdoor cleaning, a power washer with 2000-3000 PSI and 2.5 GPM flow cleans better.
- To clean steps without a power washer, use a stiff brush and concrete cleaner.
- Wash painted concrete carefully. Choose wide-angle tip.
- Sweep first. Wet mop stamped concrete.
- Use a mild detergent as it cleans well.
- Hold nozzle 12 inches away to prevent damage.
- Wait 28 days after pouring before acid washing.
- Weather new concrete before acid washing so etching isn’t too deep.
Maintenance and Safety
- Power wash and seal driveway yearly to prevent hazards.
- Maintain appearance and safety.
- Improve curb appeal.
FAQs About Concrete Washing
Is it OK to pressure wash concrete?
Yes, use a power washer with at least 3000 PSI and a flow rate of at least 4 GPM for effective cleaning. Seal your driveway after washing to protect from the elements and prevent cracks. However, be aware that power washing can damage concrete if not done properly.
What is the best way to power wash cement?
- Apply a degreaser before power washing.
- Start at the highest point, working down.
- Use a steady, sweeping motion.
- For home use, 1300-2400 PSI washers work best.
- Pressure washing is better for masonry than power washing.
- Don’t run a washer over 5 minutes.
- Use hot water and detergent.
- Opt for 3000+ PSI and 4+ GPM flow rate.
- High pressure can damage surfaces like wood and brick. Use low pressure and a soft brush instead.