The Differences of Exterior Paint from Interior and Waterproof Paint

Exterior Paint IdeaSome people might have no idea about the different of exterior paint from other types of paint or coat. In the application, for example, some people do not really care about the function of exterior paint by blending it with another paint of different brand or type, neglecting the recommended application steps, and using interior paint instead of the exterior one. Some people also usually refer exterior paint as waterproofing, which is actually different. Let’s know deeper about the characteristics of exterior paints.

Interior versus exterior paint
Can we use interior paint for exterior walls? You can, but don’t complaint if the paint peels and fades quickly so that water can seep into the house. Interior and exterior paints should be differentiated, because they protect different areas and require different formulations.

Interior paint should provide a sense of security to health and ease of maintenance white exterior paint should provide protection and resistance to weather. Extreme weather changes can cause the paint to peel faster. Ultraviolet rays can also make the paint color faded. Therefore, anti-weather and anti-UV formula must be present in exterior paint. Besides, the exterior paint usually comes with advantages such as mildew resistant, fungus, and alkali.

In terms of the paint quality, good exterior paint has a pure acrylic adhesive power and better endurance. That is one of the reasons of the durability of exterior paint which lasts at least for 5 years. Similar to interior paint, exterior paint also requires the ease of maintenance at the home, for example spotless. Water and humidity can encourage the growth of mold and mildew. Besides being not pleasing to the eye, these two organisms will decay walls. The exterior is also prone to dirt and dust. In order to avoid dirt and dust stuck on the wall, the paint coating pores must be tight.

Waterproofing versus exterior paint
There are waterproof paint and exterior paint in the markets which usually make the consumers confused about which one to buy. Waterproofing is not a category of paint, but rather a waterproof or leak proof coating. Waterproof paint should be used on parts which are in a direct contact with water because the exterior paint is not designed to be immersed in a pool of water.

Waterproof paint is a type of elastomeric coating, which means it is very elastic and can cover hairline cracks in the walls. But it is not impervious to dirt. The paint will get dirty quickly, especially during a hot weather. Gray waterproof paint could help hide the dirt on the walls. While, exterior paint certainly has a lot more color options.

Unlike waterproof paint which covers imperfections, not all exterior paint is able to do so. The exterior paint uses 100% acrylic latex (acrylic pure), while the waterproof one uses styrene acrylic. This will be a significant difference between waterproof paint with exterior paint. Styrene acrylic is non-durable against extreme weather, not like 100% acrylic latex which is largely a formulation of exterior paint. That is why the, exterior paint is applied to a larger area because it requires a low maintenance.

Image credit: premiumpainting-msp.com 

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