“Specialty primer, sealer, or undercoater” means a coating that is formulated and labeled for application to a substrate to seal fire, smoke, or water damage, to block stains, or to condition excessively chalky surfaces, meaning those surfaces that have a chalk rating of 4 or less as determined by its manufacturer or producer using ASTM test method D4214-98.

Source. #8695, eff 7-27-06, ss by #10736, eff 1-1-15 (formerly Env-A 4202.01(bh)); ss by #14202, eff 2-26-25