Residential and commercial work across the city, from a single driveway to a whole storefront block.
The city hands us every kind of job in the same week. A driveway on a residential street that nobody has touched in years, a storefront where the sidewalk carries a thousand people a day, a roof in a canyon that never gets a full afternoon of sun. Different surfaces, different dirt, and the method has to change with them.
What most of Los Angeles has in common is traffic film and hard water. Both build up slowly enough that people stop seeing them, and both come off.
Street level takes the worst of it. Exhaust settles into concrete and turns it grey, and once it sits in the pores a garden hose will not lift it. Hard water is the other one: a sprinkler pointed slightly wrong or a drip line running for months leaves white deposits down the wall.
Higher up the problem changes. Roofs and north facing walls hold moisture, and moisture grows the dark streaking that most people read as dirt when it is closer to a living thing.
Because the city is spread out, the practical question is usually access rather than technique. We arrive with water and power on board, so a job in a hillside street with no outdoor tap runs the same as one in a flat driveway with a hose bib six feet away. Parking is the only thing we ask about ahead of time.