What the Sun Does to Your Exterior Paint

Exterior Painting

Exterior PaintingThe appearance of your exteriors can affect curb appeal and how others see your property. A poor paint job can make your home less inviting and could even leave bad impressions to people passing by. Exterior paint has a limited lifespan and it’s best to understand what factors (and its effects) contribute to its wearing before reapplying a new coat.

If you’re looking to hire professional exterior painting services in your area, make sure they’re aware of the following effects to prove their knowledge of your upcoming project:

Color Fading

Also known as photodegradation, UV rays can act as a bleaching agent and break down chemical bonds found in colour. Depending on the type of paint, it can either be more prone to fading or reflect light more than traditional paint. Fading happens gradually, so you might not realise the changes happening to your exterior paint until you compare it when it was newly painted.

Bubbling and Blistering

When paint easily loses adhesion, it could mean that the painter didn’t do their job well. Heat can interfere with proper drying time. If they painted on your exteriors while it’s hot, expect to have a problem. Paint exposed directly to sunlight becomes extremely hot, causing bubbles or blisters on the surface. The paint will then burst and come off when it’s raining or when there are strong winds. What’s worse is this could leave bare patches on your surface.


UV rays can cause paint chemicals, especially the top coat, to atomize and leave a dusty residue. This is the result of a deep chemical change and can sometimes go unnoticed until you run your fingers on the surface of your exteriors. This can give you problems when repainting because the new paint won’t be able to adhere to the surface.

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These are only some of the things that could happen to your exteriors if the paint receives continuous, extreme exposure from the sun.