Exterior Painting
Sun, rain, and time attack your siding every day. We wash, scrape, prime, and caulk before the first finish coat, because exterior paint fails at the prep, not the can.
Exterior paint has one job: keep weather out of your walls while looking good doing it. When it peels early, the paint almost never failed, the surface under it did. Castle Construction approaches exterior painting as a building-protection trade first and a color job second. We wash off the chalk and grime, scrape and sand what is failing, spot-prime bare wood, caulk the gaps water uses to get behind the film, and then apply premium acrylic in two proper coats.
Why Exterior Paint Fails, and Why Prep Prevents It
Peeling, blistering, and alligatoring are the three ways an exterior dies, and all three trace back to prep. Paint applied over chalky, dirty, or glossy surfaces never bonds, so it releases in sheets. Paint over damp or unprimed bare wood blisters when moisture pushes out through the film. Alligatoring, that cracked-mud pattern on old houses, comes from coats stacked on coats without sanding, until the whole buildup moves at different rates and splits.
The fix is boring and it works. Wash the surface so paint grips siding instead of grime. Scrape every loose edge until you hit paint that is actually attached, then sand those edges so they feather out instead of telegraphing. Spot-prime anything bare so tannin bleed and raw wood do not sabotage the topcoat. This is the least photogenic part of the job and the most important, the same rule that governs everything in the Castle Construction painting trade.
The Exterior Prep Sequence
Every exterior we paint gets the same sequence, adjusted to the condition of the surface. It starts with washing, low-pressure with a cleaner, because blasting water into siding joints creates the moisture problems we are trying to prevent. Then scraping and sanding, mechanical removal of everything that is not solidly bonded. Then repairs: cracked boards, failed glazing, soft trim. Rotten wood gets replaced, not painted, and our handyman side handles that carpentry within the same job.
Priming and caulking finish the prep. Bare wood, rust spots, and stains get the correct primer for the problem, oil or acrylic, stain-blocking where knots and tannin bleed threaten. Then caulk, tooled into every joint where trim meets siding and where water could sneak behind the paint film. Only after all that does color go on, two coats at proper thickness, brushed and rolled or sprayed and back-rolled depending on the siding.
- Wash siding to remove chalk, mildew, and dirt
- Scrape and sand all failing paint back to sound edges
- Replace rotten wood instead of painting over it
- Spot-prime bare wood, stains, and rust
- Caulk joints and gaps before any finish coat
- Two finish coats of premium exterior acrylic
Wood, Fiber Cement, and Stucco Each Play by Different Rules
Wood siding moves with the seasons, so it needs a flexible acrylic finish and honest attention to caulk joints and end grain, where water enters first. Cedar and redwood add tannin bleed to the list, brown stains that ghost through light colors unless a stain-blocking primer goes down first. Older homes may carry many layers of previous coatings, which changes the prep math entirely, sometimes the right call is more scraping, sometimes full removal in problem areas.
Fiber cement is more forgiving, dimensionally stable and paint-friendly, but factory finishes eventually chalk and joints still need caulk maintenance. Stucco is a different trade again: hairline cracks need flexible patching compounds, the surface drinks paint so coverage rates change, and a heavier roller nap is required to work the finish into the texture. We match primer, caulk, nap thickness, and application method to your actual siding, not a one-size process.
Weather Windows and Timing the Job
Exterior paint cures by evaporation, which makes weather a member of the crew. Temperature too low and the film never coalesces properly. Direct hot sun and the paint skins before it levels, leaving lap marks. Rain within hours of application can streak or wash a fresh coat. Dew settling on paint that went on too late in the day leaves surfactant streaking. So we watch forecasts, chase shade around the house through the day, and stop when conditions say stop.
That discipline sometimes means a job pauses for a day, and we would rather lose a day than deliver a finish with a built-in failure. Scheduling exterior work in your region's fair season gives the widest windows, and booking ahead of that season gets you on the calendar before it fills. While the crew is up on the walls, it is also the efficient time to handle deck and fence staining and sealing, a sibling service we often bundle with exterior repaints.
Common Questions
How long should an exterior paint job last?
With thorough prep, quality premium acrylic, and two full coats, expect many years of service, with south- and west-facing walls weathering fastest from sun exposure. The biggest variable is prep. A job over unwashed, unscraped, uncaulked siding can start failing in a couple of seasons no matter what paint was used.
Do you pressure wash before painting?
We wash every exterior before painting, but carefully, low pressure with cleaning solution rather than high-pressure blasting. Driving water deep into siding joints creates trapped moisture that later blisters the new paint. The goal is a clean, sound, dry surface, and then adequate drying time before any primer or paint goes on.
What if you find rotten wood under the old paint?
We replace it. Painting over rot seals the problem in and guarantees a callback. Because Castle Construction also does carpentry and handyman work, the same job can include swapping a rotten trim board or sill, priming the new wood, and painting it to match, without bringing in a second contractor.
What time of year is best for exterior painting?
The fair-weather season, when daytime temperatures sit comfortably in the paint manufacturer's application range and rain is less frequent. Spring through early fall works in most climates. Good calendars fill early, so get estimates before the season starts. We will not paint in conditions that compromise the cure, even if it delays a day.
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Straight answers, fair numbers, walls built like they matter.
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