Formulated for the tough waterproofing jobs.
Heavy Duty Patching Compound is a thick, black, waterproofing compound manufactured from "Heart of Texas" AsphaltŪ, High Strength Micro Fibers, Dia-SealTM, finely milled blue-black slate and two highly effective chemical additives, ZHD-7TM and ZonamineTM.
MSDS
Data Sheet