Over 46 Years of Experience Dyna-Grout Inc Serving the fiberglass, marine, automotive, architectural, electronic, cultured marble, home repair, shower pan liner and waterproofing industries. We supply epoxy resins, fiberglass resins, fiberglass materials, fiberglass cloth, fiberglass woven roving, fiberglass chopped strand mat, fiberglass tapes, chopped fibers, catalysts, gel coats, hardeners, mold releases, mold making supplies, and all tools necessary for working with the above products.