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.
Is 1500 psi enough to clean concrete.
The exact or a range of psi required is what the pressure washer psi chart reveals.
Almost all contractors agree that 3000 psi is more than enough for almost all concrete cleaning while the gallons per minute recommended varies.
Experts say that 3000 psi and 5 gpm should be used at a minimum to clean concrete effectively.
This pressure is more than a garden hose.
A 1 500 psi unit might indicate a high pressure to a homeowner for cleaning decks and siding.
On the contrary this pressure is too less to clean parking areas stained with tar.
Concrete floor or stucco.
One can also use a pressure washer to clean concrete.
For example it ll take a lot less pressure to clean dust and salt from your vehicle than it will take to clean oil stains from your garage floor.
Small electric pressure washers may not be a good option for cleaning hard surfaces like concrete if they don t have enough psi to tackle those greasy stains.
The maximum pressure washer you should use around the home should be between 3 000 and 3 500 psi.
This pressure rate is not too weak and not too strong to clean up the dirt or the grime on the concrete patio or driveway flooring.
The pressure put out by a power washer is measured in psi pounds per square inch and the psi requirements can vary based on what you re aiming to clean.
Nothing more powerful is needed for household maintenance.
This is an estimated psi value for pressure washing your home correctly.
Here s an approximate list of psi you need to clean different house objects.
But if you re going to clean the patio or deck then 1500 psi may not be ideal for the task at hand.
Cleaning concrete requires a good flow rate and a decent amount of pressure.
They pump out 2 000 to 2 800 pounds per square inch psi of water pressure vs.
Choosing one that suits your needs is no rocket science but one has to understand the basic concept of gallons per minute or gpm and pounds per square inch or psi.
However we observe that a psi of 4500 is ideal for typical concrete flooring.
Usually concrete flooring would be around 8 inches so a psi 3500 to 4000 is good enough.