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After all, not everyone possesses the professional knowledge of a painter; when painting walls, it’s easy to be misled by incorrect advice, leading to mistakes in home renovation. The application of interior wall paint covers the largest proportion of the entire indoor surface. In the process of selecting and applying interior wall paint, paying attention to details is crucial, as it affects both the aesthetic appearance and durability of the paint. Next, let’s take a look at the 3 most common mistakes people make when applying interior wall paint. Mistake 1: The color of colored interior wall paint becomes darker with each application. Some people think this is related to the number of applications, as the accumulation of paint layers can intensify the color of the pigments. Homeowners who want to deepen the color of their walls may ask the painters to apply the paint several additional times in order to achieve the desired depth of color. However, this is not the case; applying the paint too many times increases the thickness of the coating on the wall, which can easily lead to cracking and other problems on the surface. Myth 2: The thickness of the paint film on interior walls is related to the method of application. There are two ways to apply interior wall paint – spraying and rolling; the paint film obtained by spraying tends to be thinner than that achieved by rolling. In fact, there is no direct relationship between the two. The thickness of the paint film is determined by the number of applications of the interior wall paint and the amount of water used; the more applications, the thicker the paint film will be. Myth 3: Applying the topcoat several times is sufficient; there’s no need to use a primer. The process of applying interior wall paint requires first preparing the surface to be smooth, followed by applying putty in two layers. After this step, some homeowners decide to apply the interior wall paint directly, believing that this will yield better results. However, the function of the primer is to prevent the topcoat from absorbing the alkaline substances in the wall, thus protecting the topcoat. From the perspective of durability, it is essential to use a primer, and its use also allows for a reduction in the number of times the topcoat needs to be applied.