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Why Powder Coating Is the Best Finish For Your Aluminum Windows And Doors

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Powder coating is one of the most popular paint application processes used in aluminum windows and doors. The sophisticated technology integrated into this method leaves a stunning impression with a fantastic finish. Its polyester coating finish has corrosion protection and vibrant colors, which makes it the ideal option for commercial buildings.

Polyester powder coating is by far the most popular method that has been used in commercial and residential buildings for over 40 years. Even so, what are the benefits of powder coating, and why is it the best finish for your aluminum windows and doors? Read on for a detailed insight into everything you need to know about powder coating. 

What is Powder Coating?


Powder coating is a coloring and finishing process that entails the application of free-flowing powder in a dry form. The process uses dry paint without the solvent part. It is applied using the electrostatic method and dried under heat.  

Before the coat is applied to the aluminum doors or windows, they are put through a series of pre-treatment and cleaning processes. It is an important process that prepares the material to receive its desired color. 

How Does It Work?


The powder coating process is a relatively simple yet effective method that involves three primary stages of application. The first stage is pre-treatment. It involves the removal of grease, dust, and other foreign particles. Ideally, the goal is to maximize adhesion by making the surface to be as clean as possible.

Application is the second stage. The powder coating is applied to the aluminum door or window via a finely mixed pigmented powder. It bonds to aluminum material, leaving a stunning finish via vibrant colors. 

Curing is the final stage. The coat is cured using a high-temperature oven. It is melted to form a hardened coating that is not only corrosion-resistant but also quite durable and environmentally friendly. 


Types of Aluminum Powder Coating


There are several methods of aluminum finishes, as shown below:

Polyester powder Coating


Polyester powder coating is quite popular for its wide range of color options, durability, flexibility, and color uniformity, especially on small areas such as the odd door handle. This type of powder coating is less resistant to fading as compared to PVDF finishes and anodized. When it comes to repairing polyester powder-coated windows and doors, it is also far easier as compared to anodized coatings.

PVDF Finish


PVDF finishes are commonly applied to steel- particularly steel panels. This is because of their wide color spectrum, corrosion and fade resistance, and good durability. Formability, abrasion resistance, and small batch orders are some of the areas where PVDF falls short as compared to anodized finishes. Regardless, the repair and maintenance of PVDF coatings are quite simple.



Aluminum anodizing is still a popular choice for constructors looking for a paint process with unique aesthetic qualities, especially in bronze colors. Anodizing surpasses other finishes in terms of fade resistance, longevity, and abrasion resistance. It is the recommended material for a metallic look.

Benefits of Powder Coating


Apart from improving the overall look of an aluminum door and window, there are other benefits, as shown below:



When it comes to aluminum windows and doors, you are assured of optimum durability. It does not succumb to external factors such as intense winds and water. Powder coating is composed of different additives that form a durable and uniform coverage.     

Powder coating is also thicker as compared to other traditional paint. Standard wet paint is approximately 1-5 mils thick, while powder coating thickness ranges from 2 ml to 10 mils. This provides better security and durability. 



One of the biggest advantages of aluminum profiles is that they are prone to corrosion. Powder coating offers excellent corrosion resistance, which helps the aluminum windows and doors withstand damage better. It is free from porosity and environmentally friendly.

Without a protective coating, you may find discolored parts or brown spots on the aluminum windows and doors. Moisture and humidity can sip into the material to corrode the parts if the right protective coating is not applied. 

Wide Array of Designs


Powder coating is an excellent option if you are looking for an array of colors and designs. When applied to an aluminum door, it yields an attractive finish through different pigmentations and additives. It is also possible to add the powder finish on top of an existing coat to deliver an amazing appearance. 

There are a few conventional coating methods that can compete with powder coating. However, if you are looking for a method with a broad spectrum of designs, powder coating is the way to go. Matte or satin is the most popular finish style.

Safe and Environmentally Friendly 


As compared to traditional methods, powder coating is more environmentally friendly. This is because it does not require solvents. It also emits little or no volatile organic compounds in the air, which makes it the ideal environmentally friendly option. 

Technically, Volatile Organic Compounds (VOCs) are one of the most harmful pollutants that contribute to the formation of ground-level ozone. They can also cause eye, nose, and throat irritation as well as dizziness, nausea, shortness of breath, and skin problems. 

Other Benefits of Powder Coated Windows and Doors


Durability and an extended lifespan are undoubtedly the top benefits of having a powder-coated window or door. These factors can be assumed to be expensive. The fact is, the powder coating process is naturally less costly compared to traditional paint. 

It does not need solvents, which means that the reduced expenses are passed down from the manufacturer to the end consumer. Moreover, powder coating does not need further treatment to increase its durability. Your powder-coated windows or doors will only need to be wiped down with soapy water. No special care is needed to maintain them.    



Whether you are looking to upgrade the color of your aluminum window or door or want to add a different style, the fact is, you will greatly benefit from powder coating. It is one of the best methods that guarantee optimum durability for your paint and is also cost-effective and environmentally friendly. 

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