Spray Foam Gun Techniques for Flawless Application

By Kevin Malone

No matter how careful you are, spray foam jobs can be messy, which leads to wasted materials. Messes require more work to clean up the job site — cutting into your hourly profits. Wasting materials drains your bottom line.

The mess and waste can also hurt your reputation and cost you future work. So, here are a few strategies to keep things cleaner, produce higher-quality work, and reduce waste.

Choose the Right Spray Foam Equipment

When taking on a new spray foam insulation job, your equipment choice is critical. Even experienced contractors can struggle with jobs if they do not have the right tools, like a professional spray foam gun.


  • Size of the chamber 
  • Type of foam you will be spraying
  • A seamless flow  
  • Consistent spray
  • No pooling, streaking, or drips

You will also want to make sure you have the correct size chamber/tip. Too large of a chamber/tip can cause loss of control, putting too much material on the substrate.

If you are unsure about whether your spray foam equipment or spray foam gun is right for the jobs you do, talk to the experts at Intech Equipment and Supply. They can help you find the best fit for your contracting business.

Proper Spray Technique

Dialing in proper spray technique takes time, but will pay dividends through faster application, superior insulation performance, and less mess and waste. Make sure that you are in a comfortable position to avoid fatigue.  Adjust the fluid pressure and temperature on the proportioner until the spray foam gun pattern is optimal and the foam patterns are consistent without voids. Overlap your previous spray pattern by approximately 50% and follow the wet line (the most recently applied to the section that still appears wet).

Match Spray Foam Gun Tips to Jobs

Make sure you match your spray foam gun tip/chamber to the job at hand. This helps control the amount of material that is coming out of the gun. If you use too large of a tip/chamber, you will waste material. If the tip/chamber is too small, you’ll waste valuable time.

Smooth Trigger Control

Maintain smooth trigger control to apply an even amount of foam when triggering the spray foam gun. With these types of spray foam guns, you do not have much control when it comes to triggering the gun. It’s either on or off. When the gun is actuated, and the gun shuts off slowly, it may be as simple as a clogged muffler.

Keep Thickness Consistent

The applicator must move the gun in a consistent stroke, and speed and maintain a consistent distance from the surface.

Cleanup and Maintenance

Properly cleaning your equipment will extend its lifetime as well as allow you to continue your job without downtime. A dirty job will not result in a flawless job.

Need to find the right professional spray foam gun, rig, or accessories for your contracting business? Call Intech Equipment and Supply at 866-652-9975 or contact us online.

About Kevin Malone
Kevin Malone is a leading expert in the spray foam insulation industry with 34 years of experience in spray foam fluid handling and a passion for innovation. He currently offers his extensive knowledge to Intech Equipment and Supply customers by supporting them in selecting quality spray foam equipment to optimize their business. Learn more about Kevin here.


Intech Equipment & Supply was founded in 1995, and has since grown to become the leader in spray foam equipment, mobile spray foam rigs, and parts supplier. With locations all across North America we are available when you need us most.