Whether flat paint is "good" for exterior use depends on the specific application and priorities. It has both advantages and disadvantages compared to paints with higher sheen levels.
Here's a breakdown:
Advantages of Flat Paint for Exteriors:
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Excellent Hiding Imperfections: Flat paint effectively conceals surface blemishes and imperfections on exterior walls. This is a significant advantage for older homes or surfaces that are difficult to prepare perfectly.
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Easier Touch-Ups: Flat paint is much easier to touch up than glossier paints. Because it lacks sheen, touch-ups blend more seamlessly, minimizing the appearance of spot treatments due to wear and tear or minor damage. This is particularly useful for exterior surfaces exposed to the elements.
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Reduced Glare: Flat paint reduces glare, which can be beneficial in areas with intense sunlight, enhancing the visual appearance of your home.
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Less Likely to Stick: Flat paint is less likely to stick to itself, a benefit for exterior surfaces like window sashes and doors.
Disadvantages of Flat Paint for Exteriors:
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Lower Durability: Flat paint is generally less durable and more porous than paints with higher sheens (like eggshell, satin, or semi-gloss). This means it is more susceptible to dirt, stains, and mildew.
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Difficult to Clean: Due to its porous nature, flat paint is more difficult to clean. Scrubbing can damage the finish and even remove paint, making it unsuitable for areas prone to dirt or frequent contact.
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Less Moisture Resistance: Flat paint absorbs moisture more readily, which can lead to problems like peeling, blistering, and mildew growth, especially in humid climates.
When to Consider Flat Paint for Exterior Use:
- Low-Traffic Areas: If you're painting an area of your exterior that is not frequently touched or exposed to heavy dirt, flat paint can be a viable option, especially if hiding imperfections is a priority.
- Historic Homes: Flat paint can provide an authentic look for historic homes, particularly where a low-sheen finish is historically accurate.
- Accent Areas: Using flat paint on smaller accent areas, such as gables or trim details, can be a way to achieve a specific aesthetic without sacrificing durability on larger, more vulnerable surfaces.
Alternative Paint Sheens for Exteriors:
For most exterior applications, paints with a slightly higher sheen level, such as eggshell or satin, are generally recommended. These provide a better balance of durability, cleanability, and moisture resistance while still offering good hiding properties. Semi-gloss or gloss paints are best for trim and doors, where durability and easy cleaning are essential.
Conclusion:
While flat paint has advantages like easier touch-ups and excellent hiding abilities, its lower durability and cleanability make it a less ideal choice for most exterior applications. Eggshell or satin finishes typically offer a better balance of properties for exterior surfaces.
