What is the best exterior paint for a stucco house in South Florida?
For a stucco or concrete-block house in South Florida, the system Atrium uses is Sherwin-Williams Loxon Acrylic Conditioner as the primer and SuperPaint Exterior Acrylic Latex as the finish, two coats, and Sher-Cryl HPA enamel on metal doors as an option. SuperPaint is 100% acrylic, resists mold and algae, and carries a seven-year manufacturer warranty. Latitude, Resilience and Emerald Rain Refresh are the upgrades, with warranties up to fifteen years. Between September 2023 and August 2026 the company bought 2,984 gallons of SuperPaint Exterior — it is the standard, not a recommendation.
Typical project range: $2,500 – $8,500 the middle half of 136 exterior painting jobs completed since 2021, using this system.
The system, layer by layer
| Layer | Product | What it does |
|---|---|---|
| Cleaning | Pressure wash, pre-treatment for mold and algae | Removes chalk, dirt and biological growth so the primer bonds |
| Repair | Elastomeric sealant in cracks; stucco patch up to ½ inch | Stops water; sealant stretches with the masonry |
| Primer | Sherwin-Williams Loxon Acrylic Conditioner | Penetrates and seals chalky stucco; binds light chalk to the surface |
| Finish, two coats | Sherwin-Williams SuperPaint Exterior Acrylic Latex | 100% acrylic; mold and algae resistant; seven-year manufacturer warranty |
| Metal doors — optional | Sherwin-Williams Sher-Cryl HPA | Ambient-cured acrylic enamel comparable to solvent-based urethanes |
The finish coats compared
| Product | Manufacturer warranty | Where it fits |
|---|---|---|
| SuperPaint Exterior Acrylic Latex | 7 years | The standard on most Atrium houses; the best value per year of life |
| Latitude Exterior | Per Sherwin-Williams product data | The line Atrium buys next most after SuperPaint; offered when the customer wants a step up without going to Emerald |
| Resilience | 10 years | Moisture-resistant early; rain-safe sooner after application |
| Emerald Rain Refresh | 15 years | Self-cleaning surface; the longest warranty in the line |
Warranty lengths are the manufacturer’s, and they are assigned to you at completion. Atrium’s own workmanship warranty is one year regardless of the product.
What the purchase records show
Sherwin-Williams PRO+ account, September 2023 through August 2026: 6,962 gallons across 995 invoices. The largest single product was SuperPaint Exterior, 2,984 gallons. Loxon conditioner, Latitude, Sher-Cryl, and interior SuperPaint and ProClassic make up most of the rest. The system on this page is what actually goes on the wall, not a brochure.
Textured coatings on commercial buildings
Tilt-up and precast buildings with a textured finish are a different system: Sherwin-Williams ConFlex UltraCrete Acrylic Texture or ConFlex XL Textured High Build, the closest equals to a TEX-COTE XL-70 specification. That belongs on a warehouse, not a house — see commercial exterior repainting.
Brands other than Sherwin-Williams
Benjamin Moore is specified when a customer or an HOA color schedule calls for it. GAF and Tremco products are used on roofs and waterproofing details. Sto crack fillers, sealants and repair mortars are used on stucco restoration.
Sources
- Atrium exterior repaint scope and material specification — the product descriptions that go on every exterior proposal
- Sherwin-Williams PRO+ account exports, September 2023 – August 2026 — 6,962 gallons purchased; 2,984 gallons of SuperPaint Exterior
- Sherwin-Williams product data — SuperPaint seven-year, Resilience ten-year and Emerald Rain Refresh fifteen-year manufacturer warranties
Related questions
- Do I need elastomeric paint on stucco in Florida?
- Usually not on a house. Elastomeric coatings bridge hairline cracks and shed water, but they trap moisture in block walls that cannot dry outward, and they are difficult to recoat later. Atrium uses elastomeric sealant in the cracks and gaps and a breathable acrylic on the wall. An elastomeric wall coating is specified where a building needs a continuous waterproof membrane — a parapet, a wall with chronic water intrusion — not as the default.
- Why prime a wall that is already painted?
- Florida stucco chalks: the old paint's binder breaks down under UV and leaves a powder that new paint cannot grip. Loxon Acrylic Conditioner penetrates that chalk and binds it to the wall so the finish has something to hold. Skipping it is the most common reason a repaint peels in two years, and it is the first thing missing from a cheap bid.
- SuperPaint or Emerald?
- SuperPaint is the standard finish: 100% acrylic, mold and algae resistant, seven-year manufacturer warranty, and the product on most of the 136 exterior jobs in the records. Emerald Rain Refresh and Resilience are stiffer, more water-resistant films with ten- and fifteen-year manufacturer warranties, at a higher price per gallon. On a house you plan to keep for a decade the upgrade is worth pricing; on a rental it usually is not.
- What goes on metal doors and garage doors?
- Sher-Cryl HPA, an ambient-cured acrylic enamel with performance comparable to solvent-based urethanes — two coats on the exterior face, as an optional line priced by the door, not part of the standard wall scope. Metal window frames and sliding doors are caulked to the stucco but not painted unless asked for — they are a separate line.
- How many coats?
- Primer plus two finish coats on every wall and trim surface. A single finish coat over conditioner is the second most common shortcut in a low bid, after skipping the primer, and it shows within a year as the old color ghosting through.