Spray coating: Best practices for painters

Spray coating is an efficient and effective method for achieving a smooth, even finish on a variety of surfaces. Whether working on industrial projects, automotive applications, or general painting tasks, following best practices ensures high-quality results, reduces material waste, and improves safety. Here’s a guide to the key techniques and considerations for painters using spray equipment.

 

Choose the right spray equipment

Selecting the right spray system depends on the project type and the material being applied. Common types include:

• Airless sprayers: Ideal for large surface areas, offering high-speed application with minimal overspray.
• Air-assisted airless sprayers: Combine airless efficiency with added air assistance for better control and a finer finish, making them suitable for medium to large projects.
• HVLP (high volume, low pressure) sprayers: Provide greater control and reduced overspray, perfect for fine finishes.
• Conventional compressed air sprayers: Best for detailed work but require more material and produce more overspray.

At Airblast Eurospray, we offer a range of high-performance spray equipment, from airless systems to HVLP guns, designed to help you achieve precision and efficiency on every project. If you’re not sure which system is best for you, our expert team is happy to help.

 

Prepare the surface properly when treating steel or similar material

A clean and properly prepared surface is essential for adhesion and a professional finish. Follow these steps:

• Remove dirt, grease, and old coatings with appropriate cleaners or degreasers.
• Blast the surface if necessary to improve adhesion.
• Use a primer suited to the coating material for added durability.

 

Optimise spraying technique

Mastering your spraying technique reduces defects like runs, drips, and uneven coverage:

• Maintain a consistent distance: Keep the spray gun around 30cm from the surface.
• Use steady, even strokes: Move in smooth, overlapping passes to ensure full coverage.
• Control air pressure and fluid flow: Adjust settings to suit the viscosity of the paint and the required finish.

 

Manage environmental conditions

Temperature, humidity, and ventilation play a crucial role in spray performance:

• Avoid spraying in high humidity or extreme temperatures to prevent poor drying and adhesion.
• Ensure proper ventilation when using solvent-based coatings to reduce fume buildup.
• When spraying outdoors, consider wind direction to minimise overspray.

Where possible, we recommend using a spray booth. It provides a controlled environment, allowing you to manage these factors effectively for more consistent results.

 

Prioritise safety

Spray coatings often involve hazardous chemicals, so taking proper precautions is critical:

• Wear appropriate PPE (personal protective equipment), including respirators, gloves, and protective eyewear.
• Ensure your work area has adequate ventilation or use an extraction system in enclosed spaces.
• Follow manufacturer guidelines for handling and storing coatings, including proper disposal of waste materials.

Take a look at our guide, Maximising Safety And Efficiency, for further guidance on how to safely streamline your workflow for efficiency.

 

Maintain and clean equipment regularly

Proper maintenance extends the lifespan of your spray equipment and ensures consistent performance:

• Clean spray guns, nozzles, and hoses immediately after use to prevent clogging.
• Inspect and replace worn parts like seals and filters.
• Store equipment in a clean, dry area to prevent contamination.

Consider regular servicing with Airblast to keep your equipment in top condition and avoid unexpected downtime.

 

Training opportunity

Want to get the most out of your spray equipment? Airblast Eurospray offers in-depth training sessions covering everything from surface preparation to equipment maintenance, ensuring you work safely and efficiently. We can guide you through both theory and hands-on practice, helping you perfect your technique.

 

Conclusion

Following these best practices for spray coating improves efficiency, safety, and the overall quality of your work. Whether you're a professional painter or an industrial applicator, attention to technique, equipment maintenance, and environmental conditions will help you achieve the best results.