Paint on a Davenport or Rio del Mar home deals with salt air and wind. Paint on a Ben Lomond cabin deals with shade and moisture that never quite leaves. Both shorten the life of a paint job, and both come down to the same fix: better prep.
Start with the wood. Paint won't hold on soft or rotted boards, so damaged siding and trim should be replaced first. Then comes cleaning, scraping loose paint, sanding edges smooth, caulking gaps, and spot-priming bare wood. Skip any of those steps and the new paint fails at the same spots as the old paint.
Timing matters here as well. Painting on a foggy morning traps moisture under the film, so we wait until surfaces are actually dry and plan around the marine layer. In shaded areas, that can mean painting mid-day and working with the sun around the house.
Choose quality exterior coatings rated for high moisture, and consider mildew-resistant formulas on shaded walls. A good exterior job here should last many years, but only if the surface underneath was ready for it.