Red Nozzle (0 Degrees)
The red nozzle will be helpful for projects needing a small, very concentrated stream of water. This nozzle can remove stains from concrete or metal.
Black nozzles are the standard nozzle that comes with most pressure washers. They can be used for a variety of cleaning tasks and are safe for all surfaces. Green nozzles are designed for use on soft surfaces such as vinyl siding or cars. They provide a gentle stream of water that won't damage delicate surfaces.
Use the Green 25° nozzle to safely clean siding, decks, sidewalks, or driveways. It also works well to remove stubborn dirt or mud from off-road vehicles and wheels.
Typically decks will need anywhere from a 25-degree nozzle (for more stubborn build-up) to 40-degree (for newer decks with less damage or synthetic wood). The higher the degree the less pressure at point of contact.
Red Spray Tip (0-Degrees)
The red spray tip creates a 0-degree spray pattern and is the most powerful nozzle of them all.
Green nozzle – 25 degrees
You can still clean tough stains from concrete and brick if you hold the wand close to the surface. You can also safely clean wood and siding if you keep the nozzle farther away. Use the green nozzle for all cleaning chores, including gutters, aluminum trim, sidewalks and patios.
Concrete cleaning calls for powerful pressure washers featuring high pressure levels of 3000 PSI. However, if you will be using the power cleaner to maintain a range of surfaces in addition to concrete, choose one with adjustable pressure levels and set it to about 3000 PSI when you need to clean concrete.
To get the job done right, you need a pressure washer rated at least 3,000 PSI with a flow rate of at least four gallons per minute (GPM).
The green 25° nozzles are commonly used for cleaning tasks such as washing dirt off pavement, fences, decks and siding.
Clean From the Bottom Up
Using the cleaning solution, start power washing at the bottom of the house and work your way up. Working from the top down can cause water and suds to run down the side of the house, making it more likely you'll miss a section.
65° Soap (Black or Blue)
The 65° fan nozzle, also called the soap nozzle, is used for what its name suggests – applying soap (detergent) to a surface. This would be commonly done before the cleaning takes place. The nozzle applies minimal pressure and is considered safe to use on all surfaces.
Medium Duty 2000-2800 PSI
This classification ranges from as low as 2,000 PSI to as high as 2,800 PSI. You can use a medium-duty pressure washer for almost any surface. They're great for cleaning concrete, brick, and wood.
If your area is more prone to algae and mold, then you may want to wash your concrete more often. You should pressure wash your concrete at least once a year to protect your concrete and the value of your home. Using a concrete sealer can also prevent damage to your concrete after it has been washed.
Any machine capable of producing at least 1,500 pounds per square inch (psi) of pressure can clean concrete, but the work will go much faster if you choose a model producing 2,500 to 3,000 psi, like the gas-powered option below.
In fact, vinegar removes mold from concrete better than bleach. Bleach will only remove the top layer of mold, causing the mold to return.
If your concrete has been newly poured, make sure to wait until it has fully cured. The curing process, if done correctly, typically takes around thirty days to properly dry and set to its full strength.
To maintain the lighter color of a concrete driveway, many homeowners turn to cleaning with bleach, but you should not power wash with bleach because it can damage your pressure washer.
Our recommendation ranges from as low as 3,000 PSI to as high as 4,000 PSI.
Oil leaks, blood, and sticky residues can absorb and result in stubborn stains. However, using a driveway sealant after pressure washing can help prevent these stains from becoming permanent features in your driveway.
Each concrete structure has a normally acceptable psi range. Concrete footings and slabs on grade typically require a concrete of 3,500 to 4,000 psi. Suspended slabs, beams, and girders (as often found in bridges) require 3,500 to 5,000 psi.
All flat fan nozzles that are the same color will produce the same GPM at the same pressure. For example, two nozzles that are blue will both produce 0.30 GPM at 40 psi, while two red nozzles will produce 0.4 GPM at 40 psi.
25° Green-Nozzle – Used for normal washing/cleaning to remove common dirt, mud and stain from surfaces. 40° White-Nozzle – Used for rinsing and light cleaning of windows, roofs, automobiles, boats etc. Black Nozzle – Uses a lower PSI and wider spray for soap application.