Wood siding and trim are beautiful but demanding surfaces. They expand and contract with temperature and humidity, absorb moisture, and are vulnerable to rot, mold, and UV degradation. The right paint makes all the difference between a finish that lasts 10 years and one that peels in three.
Here's what the professionals at Gonzalez Painters & Contractors use on wood surfaces — and why.
Key Takeaways
- 100% acrylic latex paint outperforms oil-based for wood flexibility and mildew resistance.
- Sherwin-Williams Duration and Emerald are the top-rated options for wood exteriors.
- Proper priming is critical on bare or previously bare wood.
- Two coats over a solid prime coat is the minimum for lasting results.
Why Paint Formulation Matters for Wood
Wood moves. As temperature and moisture fluctuate, wood expands and contracts. A paint film that can't flex with the substrate cracks, then peels. Modern 100% acrylic latex formulas are specifically engineered for this flexibility — far outperforming older alkyd (oil-based) paints in climates with seasonal swings like the Triangle's.
Moisture resistance is equally critical. Wood absorbs water; a paint film that blocks moisture intrusion while allowing vapor to escape prevents the rot and mold that destroys untreated wood siding.
Our Recommended Products
Sherwin-Williams Duration Exterior Acrylic Latex is our primary choice for most wood exterior projects. It offers exceptional hide, durability, and resistance to fading and chalking. Its self-priming properties work well over previously painted surfaces in good condition.
For premium projects or historically challenging surfaces, we step up to Sherwin-Williams Emerald Exterior — the highest-performing product in the SW line. Its added mildewcide protection is particularly valuable in the Triangle's humid summers.