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A single gallon of exterior paint covers approximately 350-400 square feet, which translates to eight to 12 standard-sized shutters, depending on their dimensions. Factors affecting coverage include shutter material, surface condition, and application method. Porous surfaces like weathered wood may require additional paint, while smooth vinyl surfaces might need less. Always purchase slightly more paint than your calculations suggest to avoid running short.

Each application method has distinct advantages. Spray painting creates a smooth, even finish and works well for louvered or detailed shutters, but requires more preparation to prevent overspray. Brushing allows for better control and paint penetration into crevices, though it takes longer and may show brush marks. Your choice should depend on the shutter design and whether the shutters will be painted in place or removed.

Exterior shutters need repainting every four to seven years, though this varies based on climate conditions, sun exposure, and shutter material. Signs that indicate repainting is needed include fading, chalking, cracking, or peeling paint. Wood shutters in humid or rainy environments may require more frequent attention than those in drier climates. Regular inspections help identify when maintenance is needed before damage occurs.

Removing shutters before painting offers several advantages, including easier access to all surfaces and hardware. This approach allows for more thorough preparation and eliminates the risk of paint getting on surrounding surfaces. However, removal adds time to the project and presents challenges with second-story shutters. If safety concerns or hardware issues make removal difficult, on-site painting with proper masking and drop cloths is a viable alternative.

Painting shutters is significantly more economical than replacement when the underlying structure remains sound. With replacement costs ranging from $45 to $420 per shutter plus installation, repainting at $4 to $33 per shutter represents substantial savings. However, if shutters show significant structural damage, warping, or deterioration, replacement might prove more cost-effective long-term. The decision should balance current condition, desired appearance, and budget considerations.