There are three ways to clean the siding.
Repaint house siding.
Scrape any loose paint from the siding.
Rinse the siding with your high pressure nozzle and water hose to reveal a splotchy surface with exposed wood in areas where the coatings have broken down and paint with good integrity still clinging to some surfaces.
Begin by hosing down the siding.
Just like wood decks and fences the exterior wood siding on your home should be properly maintained to protect the wood from the elements and keep your house looking great.
If the condition of your wood siding is good it may only need to be cleaned prior to painting.
Wear gloves then mix in a bucket a cleaning solution of one cup chlorine bleach one cup tsp and one gallon of water.
The silver lining is this.
You can use a pressure washer for this job but keep the pressure low and the nozzle away from the siding to avoid eroding the wood and driving water into cracks and crevices.
Wood vinyl stucco and more.
The goal is a smooth surface with no peeling paint or sharp ridges of coating.
Painting the home exterior and painting vinyl siding is a large laborious job.
Assuming that you properly cleaned the siding prior to painting you can expect the.
Scrubbing with a sponge using a pressure washer or a random orbit sander.
Scrub the siding well to make sure there are no paint chips remaining.
Create your solution and clean the siding.