2409.3.2 Control of overchop.
FC § 2409.3.2
In areas where chopper guns are used, exposed wall and floor surfaces shall be covered with paper, polyethylene film or other approved material to allow for removal of overchop. Overchop shall be allowed to cure for not less than 4 hours prior to removal of the wall and floor coverings. Used coverings shall be placed in a noncombustible container and removed from the premises.











