Using the red tip on everything
The zero-degree red tip cuts a narrow jet that strips paint, gouges wood, and etches concrete. Reserve it for stubborn stains on hard surfaces only, and keep it moving.
Pressure washer reference
Stop guessing which nozzle goes on which surface.
Pick what you are cleaning, see the right tip, safe PSI range, and technique. Save the setup or print it for the garage.
1. Choose your surface
2. How dirty is it?
Your reference card
Surface
Driveway (concrete)
Oil stains, tire marks, ground-in dirt
Nozzle angle
25° yellow tip
Safe PSI range
2000 to 3000 PSI
Detergent
Heavy-duty concrete cleaner
Standoff distance
6 to 8 inches
Technique notes
- Work in sections no wider than 3 feet.
- Keep the wand moving in steady overlapping passes.
- Do not hold the tip still in one spot.
Watch out: A zero-degree tip will cut grooves into concrete.
Full surface reference
Every surface below is included in the matcher. Scan the table when you want to compare two jobs side by side.
| Surface | Tip | PSI range | Detergent | Risk if wrong |
|---|
Common mistakes and how to avoid them
Most damage comes from three habits. Check this list before you pull the trigger.
Even the right tip will damage a surface if you hold it 2 inches away. Start at the recommended standoff distance and adjust only if the cleaning action is weak.
Skipping the detergent step
Water alone will not lift oil, mold, or pollen film. Apply detergent from the bottom up, let it dwell for 3 to 5 minutes, then rinse top down.
Running a narrow tip on a low-PSI unit
A 15-degree tip on a 1400 PSI electric washer gives you a weak, dribbling stream. Match the tip to what your machine can actually push.
What this page assumes
- You own or are renting a consumer-grade pressure washer.
- You have at least a 25-degree and a 40-degree tip available.
- You will test on a hidden spot before committing to a full pass.
PSI vs GPM
PSI is the pressure that cuts the dirt. GPM is the water flow that rinses it away. A machine with lower PSI but higher GPM can clean faster than a high-PSI, low-GPM unit. When in doubt, favor flow over raw pressure on large flat surfaces.
Rental unit limits
Many rental machines are set to a fixed PSI you cannot adjust. In that case, control your results by changing the tip size and your standoff distance instead of chasing a number on the dial.