UPVC Spray Painting- A Step by Step Beginner’s Guide

Spray painting is a common activity in the United Kingdom (UK), involving applying colourful coatings on surfaces using a spray can.

The technique enhances a beautiful and consistent finish through the smooth and even application of the paints.

In the UK, ‘UPVC Spray Paint’ provides an affordable and convenient way to transform a home’s exterior appearance. Unplasticized Polyvinyl Chloride (UPVC) paints are designed to stick well on plastic materials, ensuring durability.

For an effective painting, various factors and processes need to be considered. The following is a beginner’s guide for professional UPCV spray paint.

1. Gathering Materials and Tools

Before anything else, gathering the right materials and tools to ensure convenience while working is basic. The painter should ensure all the required elements are present and safe.

tools necessary for spray painting

Below is a list of all materials and tools needed for UPVC painting and their functions;


  • UPVC Spray Paint– desired paint colour.
  • Masking tape– used to hide unintended areas from paint spillage.
  • Drop cloths– Prevent off sprays from reaching unintended areas.
  • A primer– enhances paint adhesion and durability.
  • UPVC surface cleaner– used to remove contaminants on the surface, such as grease.


  • Sprayer- used to apply paint on surfaces.
  • Respiratory Mask– Protect the painter from inhaling spray particles.
  • Cleaning Cloth-used to wipe UPVC surface after cleaning or sandling.
  • Sandpaper– used to clean the surface for better primer adherence.
  • Safety Googles– protect the eyes from pain sprays.
  • Stirring Stick– used to mix the paint and primer before use thoroughly.
  • Air compressor- should be properly set if the sprayer needs it.
  • Water and Detergent– used to clean tools such as sprayers.

2. Prepare the Painting Surface

surface preparation for spray paint

Preparations start with an inspection to examine any imperfections and address them. Start with cleaning the IPVC surface to remove any contaminants, such as grease and dirt.

Contaminants prevent a perfect stick of the paint and make it prone to spilling off after some time. Cleaning should be done using a mixture of water and detergents.

Rinsing should be done after cleaning, and the surface later left to dry completely. Painting on a wet surface limit paint adhesion. Slight sanding should be done on rough surfaces using fine sandpaper.

It is advisable to wipe the surface after sanding using a clean but damp cloth.

3. Prime the Surface If Required

Priming is an essential step before applying the final paint coat. It helps increase the durability and adhesiveness of the paint.

Before application, it is important to read the UPVC spray paint manufacturer’s manual to determine whether it is recommendable to use a primer.

Some producers incorporate a primer in their paints; therefore, it might be optional. If required, it should be used according to specifications for best results. It is advisable to purchase high-quality primers specific to the type of UPVC.

A primer must be applied in a clean and dry place to enhance its effectiveness.

4. Practice and Test

It is crucial to conduct test spray to achieve high-quality paintwork. It helps verify paint colour accuracy before application.

The step is basic, especially if you intend to apply specific colour patterns. The testing should be done until the colour and appearance match expectations. It is also done to observe compatibility, since different surfaces react distinctively to paints.

Testing offers adherence properties of the paint and helps avoid uneven coating. Spray tests assist in determining spray techniques to employ in terms of distance, pressure, and angles, thus providing insights on the equipment settings adjustments.

Different spray techniques and patterns provide distinct appearance consistency. A test will also help assess the drying span.

Additionally, spray practice and testing help minimize wastage, for instance, if the colour does not match expectations, while building confidence in the ability to execute the project effectively.

5. Masking 

Spillage of paint to unwanted regions can be a drawback to professional painting. Therefore, it is fundamental to mask before painting.

The process involves the use of tapes to cover unintended surfaces from paint. Masking should be done on a clean surface to allow the tape to stick firmly.

maskingthe window

Masking must be carefully performed to avoid pattern mismatch, especially when dealing with multiple colours. The choice of masking materials to use depends on the surface and design.

6. Painting

The UPVC is now ready for painting after inspection, cleaning, priming, and masking. There are various techniques that painters can use while painting to create unique effects, textures, and visuals.

Different appearances depend on various factors such as the type of sprayer, pressure exerted, paint type, and spray distance.

Ensuring the right pressure and distance ensures even coating while preventing wastage through drips. Smooth and attractive appearances are observed through multiple thin-layer painting techniques.

Thin coat application promotes quick drying as per the manufacturer’s recommendations.

It is also easy to control a smooth paint using think multiple layers. Depending on different pain saturation needs, painters can use their preferred formulation techniques provided by the manufacturer.

7. Drying and Curing

It is marked by the transformation from wet paint to a more stable and durable solid state. Paint drying is achieved by the change from liquid to solid state, while curing is the attainment of optimal resistance, adhesion, and durability of the paint.

A well-cured paint is resistant to soft wear. In oil-based paints, the curing process is more complex due to the oxidation reaction that ensures strong bondage of molecules. In water-based paints, curing is achieved after complete water evaporation occurs, leaving behind a solid film.

The time taken for paints to completely dry and cure depends on the type of paint, environmental conditions, paint additives, and thickness. Some paints formulation has additives introduced to hasten the drying and curing process.

Wet paints dry faster in warm, low-humid areas than in cold, high-humid areas. Proper ventilation speeds up the drying process through adequate air circulation that carries fumes away.

8. After Paint Reassembly

After the painting has been done and allowed to dry, final touches procedures can be conducted. The process involves carefully removing the masking tape and drop cloths and disposing of them appropriately.

It is essential to carefully inspect the surface for any paint gaps and address them before unmasking. Reassemble all the working materials and tools in one location for easy tracing.

Consider evaluating the colour patterns, texture, and thickness and affirm their uniformity. The final touches are meant to correct any painting mistakes and confirm compliance with all expectations.

In case of any mistakes, they should be addressed using the steps elaborated above. Sometimes it is advisable to seek an assessment from an external person not involved in painting to help identify any potential error.

9. After Painting Maintenance Tips

After painting, avoid direct contact with the surface for a few days to allow complete drying. Contact with wet paint can result in damage that can demand corrections.

When the UPVC paint is dry, clean it using water and detergent.

Strictly avoid abrasive cleaners since they can scratch off the paint and result in loss of repainting. Instead, use a sponge or a soft cloth to clean.

Avoid contact with strong solvents that can react with the painted UPVC resulting in colour bleach. Conduct regular inspections for any potential peeling or cracking and address the issue before it progresses further.

Avoid high-pressure washing because it can peel off the paint. Direct exposure to sunlight for extended hours can result in discolouration.

Therefore, it is advisable to provide some shading techniques to mitigate the problem.

10. Defects Troubleshoot

Uneven coverage can be a result of paint drips or layer saturation. A thin coat can be reapplied for the lightly painted UPVC surface to create uniformity.

Improper service preparation can also cause an uneven appearance of the paint. Try cleaning the surface again and repainting. If the method is not the remedy, you can sand the surface and try again.

11. Safety Practices

Spray Painting safety

Health safety is a key parameter in any operation. The paint’s fumes create discomfort and might be unhealthy when inhaled for an extended time.

Therefore, it is crucial to wear a respiratory mask to avoid direct inhalation of the fumes.

With the consistent spillage of paint from the sprayer, wearing safety goggles will help protect the eyes. Most paints are manufactured using petroleum-based products; hence, contact with the eyes can cause irritation.

Working in well-ventilated places helps reduce exposure to concentrated fumes. Wear protective clothing and gloves to prevent direct paint contact with the skin.

Consider following the manufacturer’s safety instructions indicated on the paint can for safer operation.


UPVC spray paint is a rewarding project that transforms a home’s exterior into a more attractive and comforting place.

Although painting is a challenge for most beginners, it is possible to accomplish it using the above steps. Adequate preparation is the first step toward a successful painting project.

The painting technique and procedure depend on the painter’s unique preferences. Various appearances can be achieved through painting texture, patterns, and saturation adjustments.

Following the manufacturer’s procedure also plays a key role in ensuring high-quality and safe results.

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Advanced Painters

Advanced Painters are professional painters and decorators in the Home Counties. From exterior painting and rendering, to uPVC window spray painting and interior decorating, we produce high quality finishes that will transform the appearance of your property.

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