How Does Sun Affect My Exterior Paint?

How Does Sun Affect My Exterior Paint?

Bright sunshine can really make your home's exterior pop, but as time passes, the sun isn't always so kind to your home. In fact, extended sun exposure can seriously damage your home's exterior. Learn how the sun affects your exterior paint, and discover how experienced Boulder painting contractors can help you prevent sun damage.

Blistering Paint

When direct sunlight hits your home, the structure's surface can get very hot, especially if your home sports a dark paint color. Many Niwot exterior painters have seen the signs of blistering, which happens when heat causes bubbles to appear in the paint. When these heat blisters burst, they leave bare patches in their wake.

Peeling Paint

Excessive blistering can eventually lead to peeling paint. As wind and rain cause blistered areas to get larger, the paint can start to separate from the siding. With added sun exposure, the paint can peel away. You'll typically need to hire professional house painters to repair and repaint the unsightly areas left behind.

Fading Paint

Exterior colors can fade over time, especially on south-facing walls, which receive little protection from the sun in the Northern Hemisphere. Both dark and bright colors are susceptible to fading after long-term sun exposure as the sun's ultraviolet (UV) rays slowly bleach the paint. Since fading tends to happen very gradually, however, you might not notice until you try to repaint a bare spot.


In some cases, the sun's UV rays actually react with your home's exterior paint. This reaction produces a thin film of dust, known as chalking, on the paint's surface. You'll need a professional house painter to remove this film before repainting your home, or you might encounter substantial issues with peeling paint.

Cracked Paint

When prolonged sun exposure causes your exterior paint to crack, it leads to much more than an unsightly problem. Paint forms a cohesive surface and a protective barrier around your home, but cracks compromise its effectiveness. Cracked paint can allow moisture to seep into your home, causing water damage and even rotten siding.

How to Prevent Sun Damage to Exterior Paint

No matter what color you have in mind for your home's exterior, knowledgeable house painters in the Lakewood area can ensure that your home looks its best. Your home's exterior paint type has a significant effect on its longevity and its ability to withstand the sun's rays. High-quality acrylic latex paint works best in the sun, since this type of paint includes durable pigments and a top-shelf binder that prevents it from breaking down. Weatherproof or sunproof paint can give your home even more protection from the elements.

Experienced house painters can also advise you about what colors will work best for your home. Since earth tones tend to weather sun exposure the best, these natural colors might add a few years to your exterior paint's life span.

When you invest in new exterior paint for your home, you want to feel confident that it will last as long as possible. Collegiate Painters takes the time to apply paint by hand, resulting in a finished product that lasts much longer than a spray application can.

Image via Flickr by K.G.Hawes

Collegiate Painters