Peeling and Lead Questions on Older Riverside Homes

On a house built before the late 1970s, every answer about paint depends on what is already on the wall. Near downtown and the Mission Inn, Riverside, CA has streets of bungalows and older stucco homes where painters find many layers of paint on trim (work that painters riverside ca silver lake film festival treats as a testing job before it is a painting job). Old paint needs to be identified before it is sanded or scraped.
Layers that fail together

Many coats of oil based enamel, then latex, then another oil based coat build a film that cracks and lifts as one slab. The edge of a peeling patch shows the stack, like rock strata. Scraping removes what is loose, and the edge of the sound paint gets feathered with sanding so the repair does not show through the new topcoat as a ridge. Feathering by hand is slow, and it is what separates a smooth trim line from a bumpy one.
Lead in paint from older houses

Paint made before the late 1970s can contain lead. A painter working on such a house should test with a lead swab kit and work under the federal lead-safe rules that apply to homes of that age. That means containment sheeting on the ground, wet scraping instead of dry sanding or burning, a HEPA vacuum for cleanup and no open-flame or heat gun stripping. A contractor who says it is not an issue without testing has not done the check.
Wood trim and rot
Peeling is often moisture working from behind. Soft sills, fascia boards and window bottoms need a screwdriver probe. Rot that gives way to the tip gets cut out and replaced or filled with a structural wood epoxy, since paint over rot only hides it for a season. Open end grain and joints get caulk and a coat of primer before the finish.
Plaster and old stucco
Interior walls in older Riverside homes are often plaster, and plaster cracks move. A fibre tape and setting compound over cracks holds better than plain spackle. Bare plaster is thirsty and takes a coat of primer sealer, otherwise the topcoat dries blotchy with a patchy sheen. Exterior stucco from the same era often carries layers of masonry paint that need a chalk test and washing before anything new goes on.
What to ask
Ask whether the house will be tested, how dust is contained, and who handles wood replacement. A painter with a clear answer to each has done older homes before. A vague answer is a reason to keep looking.