Bellevue's older homes collect a surprising amount of grime between paint jobs. Decades of soot from Pittsburgh's industrial past, mildew from shaded north-facing walls, and chalky residue left behind by weathered coatings all sit on the surface before a single brush touches it. If that buildup stays put, new paint bonds to the dirt instead of the wood or masonry underneath. That means peeling starts sooner than it should, sometimes within a season or two.
Pressure washing handles the heavy work on most exteriors. It clears loose paint, mold, and surface contaminants from siding, soffits, and masonry without damaging sound material when the pressure and angle are set correctly. For brick and older wood, lower pressure with the right cleaning solution does the job without opening up joints or raising wood grain. After washing, surfaces need time to dry fully before coating begins. Bellevue's humid summers slow that drying process, especially on shaded lots with mature tree cover, so timing matters.
Interior cleaning is a different task. Kitchens and bathrooms collect grease and soap film that block adhesion just as effectively as outdoor grime. Wiping walls down with a degreaser before sanding and priming is a basic step, but one that gets skipped on jobs where prep is rushed. On older plaster walls common to Bellevue's early 20th-century homes, that prep step also reveals hairline cracks and soft spots that need attention before paint goes on. Cleaning is not just about looks. It is the first real test of what the surface underneath is actually doing.
