What is Shot Blasting?
Shot blasting is the recommended method of surface preparation of concrete for most polymer floor installations. It is also a very cost effective and efficient way to remove existing thin layer coatings. Shot blast equipment utilizes an alloy wheel spinning at high speeds to throw small steel particles(or shot) at the substrate in a controlled, dry, 99% dust free operation. This process removes surface contamination, adds profile and simultaneously vacuums the concrete clean in one process. The size and angularity of the shot, along with the travel speed of the unit, can be adjusted to determine the degree of the surface profile. Because shot blasting is a dry preparation process, it allows the installation of coatings to begin immediately after completion of prep(surface must be dry before blasting). Shot blasting will also identify weak areas in the surface of the concrete.
Note: When selecting shot blast preparation for thin film coating systems be aware that a blast pattern or "blast lines" may be visible.
Shot blasting- the method of surface preparation recommended by most coating manufacturers and floor preparation contractors.
• Shot blasting eliminates the use of expensive, non-eco friendly, harsh chemicals (muriatic acid) and leaves the concrete floor with the desired profile without any chemical residue or time consuming cleanup.
• Shot blasting is known for high production rates, wide abrasive selection and blast pattern accuracy.
• Shot blasting lends itself to efficient disposal of dust and other contaminants.
• Shot blasting can be performed outdoors and indoors.
• Shot blasting can be performed with little disruption to daily operations.
Industry guidelines for creating surface profiles
The International Concrete Repair Institute (ICRI)
• For coating applications from 4–5 mils in thickness, the surface profile shall be a CSP 3.
International Concrete Repair Institute (ICRI) Concrete Surface Profile (CSP) Scale
Blastworx maintains multiple shot blasting machines from 8 inches to 15 inches, which gives us the ability to complete projects as effectively and efficiently as possible.