Are Coloured uPVC Windows Painted?

uPVC windows have become a popular choice for homeowners due to their durability, energy efficiency, and low maintenance requirements. While white plastic trim windows have been standard for many years, an increasing number of homeowners are opting for coloured uPVC windows to add a touch of personality and style to their homes. However, a common question that arises is whether coloured uPVC windows are painted or if they come in a coloured material. In this blog, we’ll explore the manufacturing process of coloured uPVC windows and shed light on how they achieve their vibrant hues. 

Understanding uPVC Windows

Before diving into the specifics of coloured uPVC windows, let’s briefly understand what uPVC is. uPVC stands for unplasticised polyvinyl chloride, a material known for its robustness and versatility. It is commonly used in window frames due to its excellent thermal insulation properties, resistance to weather, and low maintenance requirements.

uPVC Windows: The White Standard

Traditional uPVC window trims have been primarily available in white. The white colour is the result of using titanium dioxide during the manufacturing process. This compound not only gives the material its white appearance but also helps enhance its UV resistance, making the windows more durable and fade-resistant.

Coloured uPVC Windows: The Manufacturing Process

Coloured uPVC windows, on the other hand, are not simply painted on the surface, as this method would not provide a lasting or reliable finish. Instead, the colour is integrated into the uPVC during the manufacturing process, ensuring the colour is consistent throughout the entire frame. This is done through a process called co-extrusion, where the coloured pigments are mixed with the uPVC material before it is moulded into window profiles. 

The Co-extrusion Process

Mixing the Pigments - Coloured pigments are carefully chosen to achieve the desired hue, and they are mixed with the uPVC pellets to create a homogeneous blend.

Melting and Extrusion - The mixture is then heated until it becomes a molten mass. This molten uPVC is then extruded through a die, shaping it into the desired window profile with the integrated colour. 

Cooling and Solidifying - The extruded profile is cooled rapidly, solidifying the uPVC and locking in the colour. 

Advantages of Coloured uPVC Windows

Long-lasting - Since the colour is an integral part of the material, it does not fade, peel, or require repainting over time.

Low Maintenance - Coloured uPVC windows retain their vibrant appearance with minimal maintenance, as they are resistant to weathering, rot, and corrosion. 

Customisation - Homeowners have a wide range of colour options to choose from, allowing them to match the windows to their home’s aesthetics. 

Energy Efficient - Coloured uPVC windows offer the same energy-saving benefits as traditional white uPVC windows, keeping homes well-insulated and reducing energy consumption. 


Coloured uPVC windows are not painted; instead, they are manufactured using a co-extrusion process that integrates the colour into the uPVC material itself. This method ensures long-lasting, vibrant, and maintenance-free windows that can enhance the appearance of any home. When choosing coloured uPVC windows, homeowners can enjoy the same benefits of traditional white uPVC windows, coupled with a customised and stylish look that suits their individual preferences. 

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