Differences between Exterior and Interior Paint

Painting is one of the most effective ways to freshen up the appearance of a home or building. When it comes to painting, there are different types of paint designed for different purposes. The two main categories of paint are exterior and interior paint. While they may seem similar, there are some important differences between the two.

Main Differences between Exterior and Interior Paint:


One of the main differences between interior and exterior paint is their composition. Exterior paint is formulated to withstand harsh weather conditions, such as extreme temperatures, rain, wind, and sunlight. As a result, it contains special additives that make it more resistant to fading, cracking, and peeling. On the other hand, interior paint is designed for use inside the house and contains fewer additives since it is not exposed to the elements.


Another significant difference between the two types of paint is their durability. Exterior paint is more durable and can withstand the wear and tear of the outdoor environment. It is formulated to resist moisture, mold, and mildew, and to withstand the expansion and contraction of surfaces due to temperature changes. Interior paint, on the other hand, is not subjected to these harsh conditions and therefore, does not require the same level of durability.

Color options:

When it comes to color options, interior paint offers a wider range of colors and finishes than exterior paint. This is because interior paint is not subjected to the same weathering effects as exterior paint, and therefore, does not need to be as functional. Exterior paint typically comes in a more limited range of colors, often in neutral shades that blend in with the surroundings.

Application and preparation:

The application and preparation of exterior and interior paint also differ. Exterior paint requires more preparation, such as cleaning and priming, to ensure that it adheres properly to the surface and withstands the outdoor environment. It may also require specialized equipment, such as scaffolding, to reach high areas. Interior paint, on the other hand, can be applied with a brush, roller, or spray gun and does not require as much preparation or specialized equipment.


In conclusion, while both exterior and interior paint serve the same purpose of adding color and beauty to a space, there are some significant differences between them. Understanding these differences will help you choose the right paint for your specific needs and ensure that your painting project is successful.

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