It can just as easily strip away a plant as a stain.
Pressure washer psi for concrete driveway.
Can i damage my concrete with a pressure washer.
That much pressure is designed to strip substances away from surfaces so be careful when using a pressure washer.
The recommended minimum psi for cleaning concrete is 2200 psi however if you can afford it 3 000 psi will get the job done quicker.
If done properly pressure washing concrete can make a patio driveway or walkway look as good as new in just a day s time.
For this post you should know that we don t make a distinction between power washing vs.
To calculate its cleaning power or cp multiply a pressure washer s maximum psi rating by its gpm flow cp psi x gpm.
However we observe that a psi of 4500 is ideal for typical concrete flooring.
Recommendations vary although 3000 psi is ideal for most concrete cleaning while 3 gpm is the minimum flow rate you should look for.
How to pressure wash concrete.
Pressure wash concrete by holding down spray handle working your way back and forth from one side of concrete surface to the other overlapping each stroke by 6 to 8 inches.
You ll be able to clean almost any brick or concrete with this range of pressure washer.
Most electric pressure washers create 1300 1700 pounds per square inch of pressure psi with a water flow of 1 5 gallons per minute gpm but experienced contractors recommend between 2000 and 3000 psi and a flow of at least 2 5 gpm to clean dirty concrete effectively.
Few people realize that you can damage your concrete driveway or patio by pressure washing.
Stanley 2 3 gpm 2800 psi gas power portable pressure washer cleaner 2 pack.
Usually concrete flooring would be around 8 inches so a psi 3500 to 4000 is good enough.