What Is Sand Blasting and Why Is It Used?

The Basics of Sand Blasting

Sand blasting, also known as abrasive blasting, is a process that cleans and prepares metal surfaces using high-pressure streams of abrasive material. This material could be aluminum oxide, garnet, glass bead, or other media, depending on the project needs. The goal is to strip away rust, paint, oil, or old coatings and create a clean, textured surface.

How It Prepares the Surface

Metal surfaces often contain invisible contaminants, rust, or oxidation. These issues prevent the powder from bonding properly. Sand blasting removes these imperfections and slightly roughens the surface. That texture gives the powder something to grip onto, which is crucial for even coverage and durability.

What Happens If You Skip Sand Blasting?

Skipping sand blasting can lead to multiple coating failures:

• Poor Adhesion: Without proper prep, the powder won't fuse well to the surface, leading to flaking and peeling.

• Bubbling or Outgassing: Contaminants trapped beneath the coating may cause bubbles or pinholes.

• Rust and Corrosion: Any remaining rust will continue to degrade the metal under the coating.

Real-World Example

We had a customer from Layton bring in a set of metal patio chairs that had been powder coated without sand blasting. The coating had already started to peel within a few months. After we stripped, sand blasted, and re-coated them, the results were night and day. Not only did the finish look better, but it lasted through harsh Utah winters and blazing summer heat.

Why Powder Coating Needs a Clean, Textured Surface

Electrostatic Bonding Works Best on Roughened Surfaces

Powder coating uses electrostatic charge to stick powder particles to the metal. If the surface is too smooth or contaminated, the bond won't be strong. Sand blasting ensures a consistent profile so the powder lays down evenly and fuses completely during curing.

Long-Term Performance Depends on Proper Prep

Durability is one of powder coating's main benefits, but that durability only comes with proper prep work. A sand blasted surface helps prevent:

• Chipping

• Cracking

• Peeling

• Premature rusting

Types of Projects That Require Sand Blasting

Sand blasting is essential for almost every type of powder coating project. Here are a few we commonly see at Full Blown Coatings:

• Automotive Parts: Rims, brackets, and suspension components

• Outdoor Furniture: Rusty chairs, tables, and benches

• Industrial Components: Fabricated parts, pipes, and supports

• Home Decor: Custom railings, light fixtures, and fencing

Project Spotlight

A client from Spanish Fork brought in a set of vintage motorcycle parts. They had been sitting in a barn for over 20 years, covered in grime and corrosion. After sand blasting and powder coating with a custom metallic black finish, the parts looked brand new—and the client was thrilled.

Full Blown Coatings' Approach to Sand Blasting and Powder Coating

At Full Blown Coatings, we take surface prep seriously. Our facility includes dedicated sand blasting bays, and we use a variety of media types tailored to your project. We then move directly into powder coating, ensuring there’s no time for oxidation or contamination to set in.

Local Expertise You Can Trust

We proudly serve customers throughout:

• Salt Lake County

• Utah County

• Davis County

• Weber County

• Cache County

No matter where you're located along the Wasatch Front, we bring consistent quality and attention to detail.

FAQs

Is sand blasting always required before powder coating?

Yes, for the best results. Even new metal can have oils or residues that prevent adhesion.

Can you sand blast aluminum and soft metals?

Absolutely. We adjust the pressure and use gentler media like glass bead or walnut shell.

Does sand blasting increase project cost?

It adds a small amount, but skipping it can lead to costly rework. It's worth the investment.

How long does the sand blasting process take?

 Most small to mid-size parts can be blasted within the same day, depending on our schedule.

Conclusion



If you're planning a powder coating project in Utah, don't overlook the importance of sand blasting. It's the first step to achieving a flawless, durable finish that lasts. At Full Blown Coatings, we handle the entire process in-house, so you get reliable results from prep to final cure.

Have a project in mind? Contact us for a free quote or visit our shop to learn more. Your metal deserves the best start—and that begins with blasting.