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Professional Tips for Machine Casing Spray Painting

Professional Tips for Machine Casing Spray Painting
March 15, 2024 apt-admin

So you’ve decided it’s finally time to give your machine casings or electrical boxes a facelift. Great idea. A fresh coat of paint can do wonders, transforming tired-looking equipment into something clean and professional. The key is doing it right. Hiring a professional not only ensures that the finish is smooth and on brand, but also works to protect the casings from the environment. APT Spray Painting has a long history of working with industrial and plant equipment manufacturers, providing high-quality paint systems that match the specifications.

Spray Paint Offers Advanced Protection for Casings

Spray paint offers durable, long-lasting protection for machinery and equipment casings. Unlike brush painting, spray painting provides an even, consistent coat with no visible brush marks. It also dries faster, allowing multiple coats to be applied in one day.

When you hire a professional spray painting service like APT Spray Painting, we will thoroughly prepare the surface to ensure maximum adhesion. Any loose paint or rust is removed, then the casing is wiped clean. For the best results, light sanding or abrasion may be required to provide a good “tooth” for the new paint to grip onto.

Primer is applied for the best coverage, especially when changing from a dark to a light colour. The pros at APT Spray Painting are experts in colour matching to provide an exact or custom shade. We use high-quality, industrial-grade paints designed specifically for spray painting applications. These paints provide UV protection and resistance to chemicals, weather, and environmental exposure.

The spray painting technicians at APT Spray Painting are highly trained and experienced. They use the proper spray painting technique to apply an even coat and minimise overspray. Strict safety procedures are followed for venting, respirators and protective equipment. The end result is a durable, professional finish that protects your equipment and enhances the appearance of your facility.

Spray painting services from the professionals at APT Spray Painting provide advanced protection and an attractive finish for machinery casings, electrical enclosures, exterior building surfaces and more. For a free estimate, call or visit our website today. Your equipment deserves the best – professional spray painting from APT.

Choosing the Right Type of Paint for Machine Casings

When it comes to spray painting machines and equipment casings, choosing the right type of paint is key. The paint you select depends on factors like:

Surface Material

Is the casing made of metal, plastic, fibreglass or another material? For metal, an enamel or industrial urethane paint works well. Plastic casings require a paint formulated for plastics that can flex and adhere properly. Fibreglass needs a paint suited to non-porous surfaces.


Consider the environment the machine or equipment operates in. For outdoor or high-moisture areas, a paint with rust-preventing primers and weather-resistant topcoats is essential. Indoor-controlled environments allow more options.


How durable does the finish need to be? A basic enamel provides an economical finish for low-wear areas, while a 2-part epoxy or polyurethane paint creates an ultra-durable finish that resists chemicals, scratches and weathering.

Colour Matching

Do you need an exact colour match? Custom colour matching services allow APT to match your specific corporate or brand colours using digital colour readers and tinting systems. We keep records of all custom jobs in case touch-ups are needed in the future.

With many options available, the team at APT Spray Painting can recommend the ideal coating for your machine casings based on your specific needs and requirements. Just give us a call! We’re happy to inspect your equipment, discuss options, and provide a free estimate for professional spray painting services. Your equipment will look brand new when we’re done!

Things to consider for internal vs external use

When considering spray painting machine or electrical casings, you’ll need to determine if the area is for internal or external use. This affects the type of paint you’ll want to use.

Internal Use

For areas inside a machine or electrical unit, you’ll want to use paint specifically designed for industrial equipment. These paints are non-toxic, heat resistant, and designed to withstand environmental factors like oil, grease and chemicals. Popular options include:

  • Epoxy paint – Two-part paint that is extremely durable and chemical resistant once cured. Requires a primer.
  • Polyurethane paint – Single component, oil-based paint that provides good coverage and durability. May require a primer depending on the substrate.
  • Direct to Metal (DTM) paint – Can be applied directly to bare metal surfaces without a primer. Fast drying and resistant to chemicals.

You’ll also want to consider the operating temperature of the equipment to choose a paint with a high enough heat tolerance. For high heat areas, a silicone-based paint would be a good choice.

External Use

For external casings, you have more flexibility in paint options. However, you still want a product designed for industrial use that can withstand environmental exposure. In addition to the options for internal use, other possibilities include:

  • 2K polyurethane – Two-part paint that produces an extremely high gloss, durable finish. Requires a primer.
  • Acrylic lacquer – Fast drying, cost-effective paint for metal surfaces. Prone to scratching/fading over time with environmental exposure. Requires a primer.

The specific needs of your equipment and operating environment will determine the best choice for your application. Consulting with a professional industrial painter is recommended to ensure the optimal results. 

Spray Painting Casings Keeps Metal Protected and Looking Great

Spray painting your machine casings and electrical equipment cabinets is one of the best ways to protect the metal from corrosion and keep your equipment looking professional. The team at APT Spray Painting have years of experience providing high-quality spray painting services for commercial and industrial clients.

Preparation is Key

The first step is thoroughly cleaning and degreasing the metal to provide a suitable surface for the new paint to adhere to. Any loose paint, rust, or other contaminants must be removed. The casing is then lightly sanded to create a slight ‘tooth’ for the paint. Masking off any areas not intended to be painted is essential for a clean, professional finish.

High-Quality Paints and Primers

APT Spray Painting only use the highest quality paints and primers specifically designed for industrial applications. Primers provide a solid base coat, while topcoats of enamel, polyurethane or epoxy paint provide durable protection. For high-heat areas, heat-resistant paint is used. Clients can choose from a wide range of standard colours, or custom colours can be matched.

Skilled Technicians and Proper Techniques

Our experienced technicians are highly skilled in the latest spray painting techniques to provide an even, smooth coat of paint. Using an airless spray gun, the paint is applied in light, even coats, allowing each coat to dry in between applications. Multiple thin coats are better than one thick coat. Proper spray technique, nozzle size, and air pressure are adjusted based on the intricacy of the casing. Strict safety standards are followed regarding ventilation, protective equipment, and handling of paints. 

Protect Your Investment

Professionally spray painting your machine and equipment casings is an affordable way to protect your valuable equipment investment. A fresh coat of paint prevents rust and corrosion, maintains appearance, and helps extend the working life of the casings. For the best results, consider repainting casings every 3-5 years.

APT Spray Painting are your trusted experts for professional spray painting of industrial and commercial equipment. Give us a call today for a free estimate for your machine or electrical casing spray painting needs.

spray paint gun being held by a professional

Why Hire a Professional for Electrical Casing Spray Painting?

Why hire the professionals at APT Spray Painting for your electrical casing spray painting needs? There are several reasons to consider:


With over 30 years of experience, the team at APT Spray Painting are experts in industrial spray painting services. We know the proper techniques, equipment, and paints to use for electrical casings and components to get the best, most long-lasting results. DIY spray painting may seem easy, but without the proper experience, you could end up with uneven coats, drips, and a finish that chips or fades prematurely.


APT Spray Painting uses only the highest quality paints and primers specifically designed for industrial applications. We are experts in surface preparation and apply multiple coats for an even, durable finish. Our work is guaranteed to last for years to come. If you do it yourself with cheap spray paint from a hardware store, you may need to re-paint again within a year or two.


Spray painting electrical casings and components requires specialised safety equipment, ventilation, and training to do properly. The team at APT Spray Painting follow all safety protocols to ensure there are no fires, health hazards or other issues. We are fully insured for any industrial spray painting work we do. DIY spray painting in an unventilated space could be dangerous.


Hiring APT Spray Painting means the work is done for you professionally and promptly without you needing to buy any equipment or supplies. We bring everything to your facility to get the job done efficiently while you can continue focusing on your own work. No need to block off time on your schedule or make space in your workshop.

There we have it! If you’re looking to have some machinery casing painted, contact us today for a free, no obligation quote.