Audubon, PA

Shade is harder on exterior coatings than sun, in a way that surprises most homeowners.

A shaded wall dries slowly after every rain. It stays damp longer, it collects leaf litter and organic debris, and it grows mildew and algae readily. A north elevation under heavy canopy in this township can look ten years older than the south elevation of the same house.

The response is not just a different color, it is a different specification. That elevation gets washed with a solution that kills the growth rather than just rinsing it, gets full dry time before priming, and gets a mildew-resistant finish rather than the same product used on the sunny side.

Decks here take the worst of it. Constant debris, limited sun to dry them out, and heavy algae growth, all on a horizontal surface that already gets more abuse than any vertical one.

The recurring mistake is recoating over a finish that is already failing, which peels off along with the old one. Deck work starts with stripping or sanding back to sound wood, replacing soft boards, resetting fasteners, and brightening the surface, and only then applying a product matched to a shaded, high-moisture location.

A deck under trees will always need more frequent maintenance than one in the open. That is worth knowing going in rather than being disappointed in year three.

Houses here tend to be substantial and to combine materials on the same elevation. Brick or stone veneer on part of the front, siding elsewhere, plus trim, shutters, and often a multi-car garage.

Each material wants its own product and prep, and the joints between them are where caulk fails and water gets in. Old caulk hardens, shrinks, and splits, and every failed joint is a path into the wall. We cut it out and reseal rather than caulking over it.

A proper estimate here prices the elevations separately, because one blanket square footage number on a house with three substrates is going to be wrong in one direction or the other.

Open plans, two story entries, and cathedral ceilings are common in this housing, which means real setup rather than a step ladder.

The other consequence is long uninterrupted wall runs, where a lap mark or a texture inconsistency has nowhere to hide. That comes down to keeping a wet edge and working each wall as a single sequence rather than in sections, which is a discipline thing rather than a product thing.