The PPA 571 coating protect metal fencing from corrosion for 15 years

Sandblasting 101 – Three Basic Steps for Beginners

Posted on: June 3rd, 2019 by byersbushblog

As more and more people in the metal industry look to more long-lasting solutions to fulfill their need for resilient coating, many are turning to powder coating and its unique benefits.

As one third of the overall powder coating process, surface preparation is key to ensuring a good finish with real longevity.


There are a number of ways to adequately prepare a surface for a powder coat. This article looks at one of most widely-trusted and popular methods: abrasive blasting or sandblasting.

#1. Sandblasting 101: What is abrasive blasting?

Abrasive blasting involves shooting a given media (usually sand, steel shot, glass bead or grit) at the surface being prepared at high velocity in order to shift stubborn grime and other materials that will prevent the powder coating from adhering properly to said surface.

#2. Sandblasting 101: What is used?

Blasting equipment is usually either turbine-based or air-based.

Hand-held systems are subject to the quality of the professional operating them, as they require perfect concentration and expertise to thoroughly clean the surface.

Alternatively, blast cabinets are enclosures designed for abrasive blasting, and the results of the preparation are only dependent on the quality of the equipment itself.

#3. Sandblasting 101: Which standard do I need?

Blast requirements of a surface will depend on its intended purpose, but four grades are recognized officially by the Steel Structures Painting Council as follows:

  • White metal blast: Removes all visible rust, mill scale, paint, and grime. White metal blasts are mostly used for surfaces that reside in environments with a high corrosion risk.
  • Near white metal blast: As before, but removes only 95% of visible debris. Near white metal blasts are most appropriate for materials that are going to be in heavy regular use.
  • Commercial blast: Commercial blast cleaning aims to remove two thirds of visible debris, making it suitable for non-corrosive environments.
  • Brush-off cleaning: The least thorough of all blast standards, brush-off cleaning aims to lightly blast all the material removing all debris except for stubbornly-adhering residue. This is the lightest form of blasting, making it best suited to non-corrosive environments where a lengthy lifespan and strong resilience is not required.


If you’d like to learn more about preparing a particular surface for abrasive blasting, the varieties of abrasive blasting and which one would best accommodate your needs, or work in the metal industry and have need for the services of a professional in the Ontario area, then contact Byers Bush Powder Coating Inc.

We have been providing powder coating and sandblasting services in Toronto, Concord, Hamilton, Brampton, Oakville, Ontario for more than 40 years.

We are known for providing high-quality finishes and doing so with a quick turnaround time and excellent customer service.

Our experienced and qualified team has the expertise that you need in order to achieve a perfect powder coated finish.

Before we coat your item, our team will inspect it.  They will check the condition of the item, and decide what needs to be done to prepare the item for powder coating.

Call Us Today

Comments are closed.