Psi stands for pounds per square inch.
Recommended psi to clean concrete.
Now the psi that you re going to use for your concrete flooring will really depend on the thickness of the concrete slabs.
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.
Cleaning concrete requires a good flow rate and a decent amount of pressure.
This pressure is more than a garden hose.
Almost all contractors agree that 3000 psi is more than enough for almost all concrete cleaning while the gallons per minute recommended varies.
Although higher pressures may be required to remove tough contaminants such as paint and heavy tire skid marks most power washing contractors agree that 3000 psi will do the trick for almost all.
Choose the tip with the widest angle that still gets the job done to prevent degrading the surface of the hardscape.
Few people realize that you can damage your concrete driveway or patio by pressure washing.
On the contrary this pressure is too less to clean parking areas stained with tar.
As concrete is much stronger than wood and your car you might need a stronger psi for cleaning.
To clean concrete effectively use a power washer with a pressure rating of at least 3000 psi and a flow rate of at least 4 gallons per minute gpm.
Usually concrete flooring would be around 8 inches so a psi 3500 to 4000 is good enough.
Learning how much pressure is required to successfully clean different surfaces materials or objects will help you determine what size pressure washer you would best benefit from.
Remember if you re never going to exceed 2500 psi then you can save some money by choosing a 2600 psi pressure washer over a 3000 or 4000 psi pressure washer.
Best for home and shop use these sturdier more powerful units make it easy to clean everything from exterior siding and fences to walkways and driveways.
What psi pressure washer to clean concrete.
A pressure washer with about 3 gpm and 3000 psi is ideal for most concrete and brick cleaning jobs.
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.
Heavy duty and extra heavy duty.
One cannot buy or choose the perfect pressure washer without understanding the two basic concepts of the machine.
A 1 500 psi unit might indicate a high pressure to a homeowner for cleaning decks and siding.
How does one measure the effectiveness of a pressure washer.
These pressure washers put out 2800 psi and higher at 3 to 4 gpm.
