1
Wide fans only
40° white for soap and rinse. 25° green only on stubborn spots, and only with standoff. The 0° red tip in a 5-pack stays in the drawer — it stripes paint, chews caulk, and will punch a vinyl panel.
How-to · siding
How to pressure wash a house without scarring the siding.
Match the fan to the wall, keep soap after the pump, and work shade-to-shade. Soft-wash bleach is a different job — this sequence is the wide-fan house wash.
Never 0° red on siding, windows, or a garage door.
A pinpoint tip stripes paint and will chew caulk. Bleach, toilet cleaner, and other oxidizers never go
through the pump inlet. Soft-wash sodium hypochlorite is a different job, metered after the pump — not
this kit.
This is the job sequence behind the house-wash kit. It assumes a washer with a 40° / 25° tip and a downstream soap path. Size the hole on the orifice chart if your stamped PSI and GPM sit outside the homeowner-gas band.
The sequence
Five passes. One wall.
2
Pump-safe soap, downstream only
House-and-siding concentrate goes through a foam cannon, soap tank, or other path after the pump. The inlet still sees water. Bleach, toilet cleaner, and oxidizers never go through the pump.
3
Soap bottom to top, in the shade
Start low so the mix does not dry in streaks as you work up. Dwell a few minutes. Do not let it bake on sun-hot vinyl or painted wood.
4
Rinse top to bottom with 40°
White 40° from the eaves down so dirty water does not streak a clean wall. Keep the fan moving. Stay off window seals, garage-door panels, and close-range glass.
5
Reach fascia without a ladder circus
A 20″ extension wand helps first-story fascia and porch ceilings without standing in the flower bed. Confirm the wand’s PSI rating meets your stamped pump number.
Why 40° is the siding tip
Vinyl, aluminum, wood, brick, and stucco want a wide, forgiving fan. White 40° is the soap and rinse workhorse. Green 25° can lift stubborn algae or dirt if you keep distance and keep the wand moving. The yellow 15° and red 0° in a 5-pack are for other jobs — not walls, not glass, not a painted garage door.
- Hold standoff. Closing in with 25° is how you etch paint and lift caulk.
- Do not pin the fan on a window, a door seal, or a light fixture.
- Confirm orifice on the tip chart before you click a pack.
Soap chemistry stays after the pump
A peroxide house-and-siding concentrate is pump-safe when it never meets the inlet. Foam cannon, soap tank, or another downstream path — the washer still pumps water. The foam and soap guide is the chemistry path.
Sodium hypochlorite house wash (soft-wash) is out of scope here. That mix wants an injector, X-jet, or pump sprayer after the pump, and it is not the soap in this kit. Do not improvise bleach through the inlet.
Worked pair: 40° white to soap and rinse, 25° green only with standoff on spots,
house-and-siding concentrate downstream, optional 20″ wand for first-story fascia. That is the house-wash
kit.
Picks that match this job
Live Amazon links with tag nozzlekit-20. No invented ASINs or prices.
Tip set
Simpson Cleaning 80145 3600 PSI Universal Pressure Washer Nozzles, 1/4-Inch Quick Connect, Set of 5Same 3.0-orifice QC pack as the driveway kit. On siding you use 40° white and 25° green only. Never the 0° red — it will stripe paint and chew caulk.
View on Amazon (affiliate) Associates link
House soap
Simple Green Oxy Solve House and Siding Pressure Washer CleanerPeroxide house-and-siding concentrate for vinyl, aluminum, wood, brick, and stucco. Downstream or foam path only — the pump still sees water.
View on Amazon (affiliate) Associates link
Optional wand
Essential Washer 20″ pressure washer extension wandReach for first-story fascia and porch ceilings without standing on the flower bed. Confirm the wand’s PSI rating meets your stamped pump number.
View on Amazon (affiliate) Associates link
Full short list, machine band, and danger notes live on the house-wash kit. Chemistry path? See foam cannons and soap. Washing the pad instead? How to pressure wash a driveway.