If you live east of I-95 in St. Johns or Flagler County, your home's exterior paint is fighting a three-front war: ultraviolet radiation, airborne salt, and persistent humidity. Each one attacks paint in a different way, and ignoring any of them shortens the life of your repaint by years.
The three culprits
**UV radiation** breaks down the resin binders in paint. South- and west-facing walls get the worst of it. Cheap paint loses its sheen, then chalks, then fails outright in as little as 4 years. Premium 100% acrylic resists UV degradation far better — but only if you put two full coats on a properly prepped surface.
**Salt deposition** is a coastal killer. Salt crystals form in micro-cracks in the paint film, then expand and contract with humidity changes. Over time, this micro-cracking compromises the entire envelope. Homes within a mile of the ocean see this most aggressively.
**Humidity** drives mold and mildew growth on the paint surface and behind it. Without a mildewcide-treated wash before painting, the spores stay alive on the substrate and bloom right through the new finish.
What proper prep looks like
Before we lay a single drop of paint on a Florida exterior, we do the following — every time:
- Soft wash with mildewcide and let dry fully (24–48 hours)
- Hand-scrape any failing paint to a sound edge
- Re-caulk every joint where wood meets wood, wood meets stucco, or trim meets siding
- Spot-prime bare wood, stucco patches, and any stain or watermark
- Apply two finish coats of premium acrylic paint, with proper recoat times between
Skipping any one of these steps is the difference between a 10-year repaint and a 4-year repaint.
Product matters too
We use Sherwin-Williams Emerald and Benjamin Moore Aura on most coastal exterior projects. These are not the cheapest paints on the shelf, but they're formulated for UV stability, mildew resistance, and flexibility — exactly the three things a Florida exterior demands. Builder-grade paint costs less per gallon and twice as much per decade.
When to repaint
Most Florida coastal exteriors need a full repaint every 7–10 years. Inland homes can sometimes stretch to 12. The signs you've waited too long: chalking that comes off on your hand, fading that's visible side-by-side with shaded areas, hairline cracks in the paint film, or peeling at the trim joints.
If you're seeing those signs, get a quote before the next storm season. We're happy to do a free walk-through of your home and tell you honestly whether you need a repaint now or you've got another year or two.
Have a painting project to talk through?
Free, no-pressure estimates from Andy Feldman himself.