Although it is possible to spray WEST SYSTEM® Epoxy, we strongly recommend against it. Leaving aside the practical difficulties, including equipment expense, the health and safety issues associated with spraying epoxy are enormous.
To effectively spray epoxy and obtain a desirable finish, it must be atomized. As epoxy leaves the spray gun nozzle, it is reduced to tiny droplets (spray mist). Most of the spray mist that doesn’t land on the surface that is being sprayed will remain airborne for some time before settling on the ground.
While the mist is suspended in the air, it is likely to be inhaled, causing respiratory tract irritation or burns, sensitisation, chemical pneumonia, and other serious health complications. Spray mist settling on unprotected skin or eyes can result in eye injury, skin sensitization, and allergic reactions. Spraying increases the amount of hazardous volatile components released from the epoxy, compared to other application methods.
In addition, using solvents to thin the epoxy so it can be sprayed poses equally dangerous health and safety risks. Solvent-related hazards would be similar to those of any spray painting operation and involve both health and explosion concerns.
For detailed safety information about specific epoxy products, Safety Data Sheets are available upon request.