Use a medium pressure level and an angled spray nozzle.
Clean aluminum siding with pressure washer.
If you choose to use a pressure washer you must be very careful to use a low setting to avoid damaging the siding or causing water to pass through to the underside.
Prepare the cleaning area.
A pressure washer can quickly ruin vinyl siding by cracking it with the high pressure stream of water so it s necessary to know which pressure level and nozzle to use.
Starting low and gently working your way up is the safest bet.
Apply the soap from the bottom up and rinse it away from the top down.
Next put on the proper safety attire including gloves glasses and a mask.
Give your aluminum siding a good rinse with the hose first.
It is highly effective and turns to side into new.
Avoid spraying up into the bottom of the horizontal siding.
To clean aluminum siding having mildew use a solution of one part bleach and four parts water.
You will want to focus on.
Gutter cleaner and exterior siding spray.
This siding cleaner by simple green contains 3 78 liters of non toxic cleaning agent with a pressure washer.
I recommend using a spray nozzle with an angled setting and working from the top down.
It s not uncommon to have a mildew problem on aluminum siding depending on where you live.
How to clean aluminum siding first rinse the aluminum siding off.
Add a detergent solution to the soft or power washer tank.
Cleaning your siding by hand or with an outdoor cleaning wand has the added benefit of greater precision and is better for many types of siding.
By mimicking rain flow you know you re not damaging your house while you clean it.
Borax aluminum siding cleaner recipe cup of borax bleach 1 gallon of warm water bucket or pressure washer.
Spray this mixture on remaining spots.
Spraying at a downward angle prevents water from getting under the aluminum siding and causing problems underneath.
If mold or mildew is the culprit spraying with a bleach solution will remove it.
Now change the pressure washer nozzle to the 25 or 40 degree spray tip and wash away all the detergent while keeping the wand at least 1 foot away from your house siding.