Is there any advantage to waxing vinyl siding?
Yes, We use a cleaner/Wax, with a polyurethane base.  /  formulated from concentrate. We venture the material from the container through our power washer, using a wax/cleaner nozzle in our wand. its usually a one step cleaning, and the poly base fills the tiny pits in the siding caused by exposure to the elements. your finish is smoothened  with a poly-glow effect.  This protection prevents mold/as the surface is sealed. houses in worse than normal condition, gets 2 applications.  After treatment, the finish is much like a newly waxed vehicle, and the water beads, and runs off, with a dry shine. usually after proper application, it only needs spraying with garden hose to refresh luster.  Every 3-5 years, you can expect to re-apply.