Causes of wall discoloration and effective solutions

After a period of use, the house’s walls may experience discoloration, the color is no longer uniform and eye-catching as before, causing the aesthetic value of the house to decrease significantly.

In this article, Uskolor’s color fastness expert will help you understand the causes of wall fading and effective solutions.

• Signs of wall discoloration

Wall discoloration is a phenomenon in which dark and light color streaks appear simultaneously on the wall and can be easily observed with the naked eye. The phenomenon of discoloration often occurs in areas such as corners of the house, next to cracked or damp walls due to leaks or seepage. In addition, the area where the two wall surfaces, the wall and ceiling are adjacent, is also prone to discoloration.

• Causes of wall discoloration

Wall discoloration can originate from the following reasons:

Using poor quality paint

Many homeowners choose cheap paint to save on construction costs. However, these types of paint do not meet the necessary criteria to ensure a durable paint film over time. After a short time, the wall may have stains, or even more seriously, blistering and peeling.

Using interior paint for exterior areas

One thing you need to keep in mind is to choose the right type of paint for different purposes. You should not use interior paint for exterior painting, because each type of paint has completely different properties and uses. In particular, the exterior area outside the house is often directly affected by sunlight, rain and wind, so it is necessary to use specialized paint for this area.

Errors when painting walls

Some errors that cause the house wall to be patchy come from human factors such as:

• The painter does not follow the steps in the process of painting the house wall, does not clean the surface to be painted before construction, does not apply a primer or too little primer, does not mix the paint in the correct ratio or does not stir evenly, does not use the right construction tools or constructs too quickly or too slowly.
• When painting the wall, the painter does not wait for the previous paint layers to dry completely before applying the next paint layer.
• Overlapping many layers of paint makes the paint layer unnatural, prone to blistering and peeling.
• Wall humidity is not guaranteed. When constructing a house wall, it is necessary to ensure that the wall humidity has a moderate temperature so that the paint layers adhere better when painted. Do not paint the house wall on hot and humid days or on humid days because it can affect the quality of the paint film after finishing.

 

• How to effectively fix discolored wall paint

If the house wall is unfortunately discolored, affecting the aesthetics of the project, you can refer to some of the following solutions:

• Sand the old wall surface to create conditions for moisture to escape
• Thoroughly treat the source of moisture, causing cracks in the house wall
• Repaint the house wall according to the system, apply primer to limit alkalization and salting of the house wall

In case it is necessary to paint old walls, you need to follow the construction process for old walls, and at the same time choose high-quality paint products to ensure the age of the worker, as well as the aesthetics of the project.

 

• How to prevent wall discoloration

To prevent wall discoloration, homeowners need to follow some of the following recommendations:

Ensure the wall surface meets the standard humidity

Before painting, the painter needs to ensure the raw wall humidity is below 16.5%. Work in dry weather conditions, avoid too much heat, or stop work if it rains.

Follow the painting steps

Painters need to carefully read the instructions on the paint mixing ratio, adjust the time between coats of paint appropriately, and carefully treat the wall surface before painting.

After construction, protect the paint surface from harmful factors such as collision, friction, impact, scratches, dirt or chemical stains.

Use quality paint products

The phenomenon of wall discoloration is mainly due to salinization and alkalization factors emitted from inside the wall. Therefore, when painting the house wall, you need to use primers that are resistant to alkali and salt. Then apply the color coating. Priming is very important, not only helping the paint color to be standard, but also helping the paint film to be durable and beautiful, not patchy after a period of use.

Below is a pair of Uskolor interior and exterior alkaline-resistant primer products with the best quality, helping to ensure the quality of your project.

Uskolor G6 Premium Exterior Alkali-Resistant Primer

Uskolor G6 Exterior Alkali-Resistant Primer is a specialized exterior primer that prevents water-proofing, salting, and alkalizing of the wall surface. The exclusive Crystallized Primer technology with insoluble crystals from BaSO4 increases the adhesion between the wall surface and the topcoat, helping the paint film not to be discolored, blistered, moldy, and change over time.

Uskolor G4 Premium Interior Alkali-Resistant Primer

Uskolor G4 Interior Alkali-Resistant Primer is a specialized interior primer developed by a team of experienced chemical engineers and experts, featuring superior alkali resistance and anti-mold properties. At the same time, Uskolor G4 also helps increase adhesion and durability of the topcoat.

The above is information from Uskolor Color Fastness Expert on the problem of wall paint discoloration in construction projects. Hopefully, through this article, Uskolor readers can clearly understand the causes as well as effective solutions to the problem of wall paint discoloration.

If you encounter any problems with your home walls, please leave your information to receive detailed advice from Uskolor Color Fastness Expert!