The yellow 15-degree nozzle is the best choice for siding and similar surfaces. When cleaning siding, you need to start at the top and work your way down. Keep the nozzle a consistent distance between 3 to 4 feet from the surface you are cleaning and keep the nozzle moving to avoid causing damage to the surface.
Green nozzle – 25 degrees
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.
Vinyl siding can withstand a powerful gas pressure washer (2,500-3,000 psi).
Krud Kutter House and Siding Pressure Washing Concentrate
This cleaner is excellent for removing grime, mold, mildew, and other stains from vinyl siding.
General household cleaners such as Lysol are some of the most effective vinyl siding cleaners. They can used to clean tough stains and dirts including those that are caused by bubble gum, ink, crayon, rust, oil, grease, grass, or even soil.
The power of pressure washing can result in holes in your siding, breaking off vinyl panels, and more. When you're using a pressure washer, you're likely shooting water up toward the top of your house.
Soft-washing techniques work best for cleaning your home's siding and roof. Pressure washers with soft-washing nozzles risk damaging siding, cracking roof tiles, and breaking glass windows. Soft-washing services, on the other hand, are entirely safe for all exterior home surfaces.
Even though vinyl is a durable, versatile and resilient building material, it does require regular care and cleaning. This prevents dirt and other contaminants from building up on the walls. Most experts recommend that vinyl siding should be cleaned once or twice a year.
1000-2000 PSI
This pressure range is good for cleaning decks and siding and for light-duty auto cleaning.
Simpson Cleaning Universal 80143 Turbo Nozzle
It is a great option for heavy-duty residential and lighter commercial use. This nozzle gives the best results when used on brick, concrete, and vinyl.
Your best bets are: Suction cups with hooks: the trick is to wet the suction cups, then press them firmly to your siding. Siding hook or clips: works on cladding that can be pried apart to some degree, like vinyl siding. Wedge the hook between the gaps, and you're good to go.
When cleaning your vinyl siding, it is important that you not use any cleaners containing organic solvents, undiluted chlorine bleach, liquid grease remover, nail polish remover, or furniture polish or cleaners. These products can potentially damage the surface of the siding.
Be careful not to spray directly at eaves, vents or light fixtures. High water pressure can knock out loose windowpanes or break them. Also, keep the angle of the wand pointing down so you don't spray up under the laps of horizontal siding. This will prevent the vinyl siding from buckling under pressure.
For general dirtiness all you'll need is a bucket of soapy water – dish soap or common laundry detergent work well, a soft bristle brush and a garden hose. Apply the soapy mixture by hand and thoroughly rinse the siding with clean water from the garden hose.
To clean your siding without a pressure washer, you're going to need a brush, some TSP (trisodium phosphate--it can be found in most hardware stores), a bucket, a hose, water, a ladder, and plenty of elbow grease.
After pressure washing your house, you have to wait for it to fully dry before you can paint it. This waiting time can be anywhere from 24 hours to 3 days. Pressure washing isn't for beginners. If you're not experienced, the high water pressure can easily damage portions of your house's exterior.
Dish soap or laundry soap mixed with warm water are efficient at cleaning your siding.