A beautiful exterior paint job starts before a single drop of paint hits the wall. Pressure washing, caulking, chalk removal — here's what separates a Florida paint job that lasts from one that peels.
Why Prep Matters More Than the Paint Itself
Paint is only as good as what it's adhering to. The most expensive paint on the market won't last on a surface that's chalky, dirty, cracked, or damp. We've seen budget paint on a properly prepped surface outlast premium paint applied over poor prep by years.
In Marion County's climate — intense year-round sun, humidity that sits above 70% all summer, and afternoon storms that soak every surface — prep work is what determines whether an exterior paint job holds up or starts failing before you've written the last check.
Pressure Washing — and Treating the Mildew First
Every exterior paint job we do starts with a thorough pressure wash. This removes chalk, dirt, mildew, algae, and loose paint — all of which will prevent new paint from bonding properly if left behind. We use the right pressure for the material: lower pressure on wood siding to avoid raising the grain, higher pressure on stucco and block.
After washing, the surface must dry fully before painting. Painting over trapped moisture is one of the most common causes of premature paint failure — the water vapor has to go somewhere, and it goes up, through your paint film.
Pro tip In Florida's humidity, visible mildew means a standard wash isn't enough. The surface needs a mildewcide solution applied before rinsing, or the spores stay behind and grow back under the new paint — which is why we finish with mildew-resistant coatings, too.
Caulking and Sealing Gaps
Gaps between siding boards, around windows and doors, at trim joints, and where materials meet are direct entry points for water. Over time, old caulk shrinks, cracks, and separates. Before any paint goes on, every gap that can hold water gets re-caulked with a paintable, exterior-grade caulk — on the older wood-sided homes around Marion County, the window and door casings are where this matters most.
This step is tedious and time-consuming — which is exactly why some contractors skip it. But skipping it means the new paint is just decorating over a moisture problem. The water still gets in; it just does it under a fresh coat.
Chalk, Hairline Cracks, and Feathering Edges
Florida sun oxidizes paint into chalk — wipe a hand across an older wall here and it comes back powdery. New paint applied over chalk bonds to the chalk, not the wall, and the chalk lets go. Chalked, oxidized wood gets mechanically prepped — sanded or wire-brushed — down to something solid, and where old paint has peeled, we feather the hard edges smooth so the new coat goes on over a continuous surface.
Stucco and block get their own treatment: hairline cracks are filled with the right compound and primed before any topcoat, or they telegraph straight through the finish within a season. On CBS exteriors we use an elastomeric-compatible primer so the finish can flex with the temperature swings instead of cracking along old repair lines.
From the field When a customer asks why one estimate is higher than another, the answer is almost always prep. The cheaper bid usually isn't doing less painting — it's doing less of everything before the painting.
Repairing Damaged Wood Before Painting
Paint doesn't fix rot — it hides it. Any wood that's soft, spongy, or crumbling needs to be addressed before painting, not after. Soft sections can often be stabilized with a penetrating wood hardener, and missing material can be rebuilt with exterior wood filler. Boards that are beyond saving need to be replaced. In our climate, rot moves fast once it starts — catching it at paint time is the cheap version of that repair.
Wondering What Your Home Actually Needs?
We'll walk the exterior with you, identify what prep is required, and give you an honest scope in writing.
Priming — When It's Non-Negotiable
Not every exterior surface needs primer before the topcoat, but some absolutely do. Bare wood, repaired areas, and surfaces with stains or bleed-through require a proper primer to seal the surface and give the topcoat something to bond to. Skipping primer on bare wood in particular is a common mistake that leads to peeling within the first year.
- ✓Any bare or raw wood — priming is required, no exceptions
- ✓Repaired areas after filler or wood hardener
- ✓Surfaces where stains are bleeding through
- ✓Chalked or previously oxidized surfaces after mechanical prep
- ✓CBS and stucco — elastomeric-compatible primer for Florida temperature swings
- ✓Major color changes (e.g., dark to light)
What Happens When Prep Is Skipped
A paint job applied over poor prep can look fine for a few months — even through its first summer. But the failure is coming. Paint applied over chalk doesn't bond to the wall; it bonds to the chalk, which releases. Paint applied over moisture will bubble. Paint applied over rot gives the wood a place to keep deteriorating beneath a surface that looks fine.
When we give an estimate, the prep scope is spelled out clearly. It's not padding the price — it's the work that makes the rest of it worth doing.
See how we approach exteriors across Marion County — from downtown Ocala to the horse farms and lake communities. Painters in Ocala, FL
Donald Bing — Owner, Bing's Painting Plus
Donald has 18 years of hands-on painting experience. He started Bing's Painting Plus to give homeowners straight answers, consistent crews, and work that holds up. He writes the Bing's Painting Plus blog to share what he’s learned in the field.
