Driveways, sidewalks, patios, pool surrounds, and commercial storefronts and drive-throughs get high pressure and a rotating surface cleaner - a spinning disc that leaves an even finish instead of the striping you get waving a wand by hand.
House siding and soffits, decks and fences before staining, and brick and retaining walls get soft washing instead - low pressure plus a cleaning solution that kills the algae, mold and moss at the root, so the surface does not just get blasted clean and regrow in a few weeks.
We do not clean roofs beyond a light rinse we might mention in passing, and we refer that work to a roof specialist rather than sell it ourselves. We also do not handle gutters, vehicles, or abrasive media on bare material - those are different trades with different equipment.
Honest limits, up front: oil and rust stains usually lift only partially, some concrete discoloration is permanent, old sealer can come up during cleaning, and wood can furr or gouge under too much pressure - which is exactly why decks get soft washed instead of blasted.
