Abrasive Blasting

Existing surfaces are removed (mill scale, rust, paint, etc) and a surface profile is formed to suit the finish to be applied by blasting with high pressure air and a blasting medium. It is very important that this surface profile is correct to provide the necessary anchor to achieve the durability of the subsequent finishes. 

The most used blast mediums are garnet, a naturally occurring completely inert material that is imported for the purpose, steel shot in different configurations (size, crushed as grit, etc) and crushed glass. Garnet and glass can generally be used in an open environment, steel grit is used in a closed environment, generally a blast booth.

Sand blasting is a process of the past - sand is no longer used, it contains silica and is a danger to the health and to the environment.