HYDRO-BLOK Screws & Washers Kit Marble on vertical or horizontal concrete

on vertical or horizontal concrete block (excluding lightweight block) and cast-in-place concrete

Its peel-and-stick backing installs directly over clean subfloors without thinset

and lime deposits from acid-tolerant surfaces

and textured tile

consistent water heating on the job

HYDRO-BLOK Screws & Washers Kit Marble on vertical or horizontal concreteThe HYDRO BLOK Screws & Washers Kit is designed for fastening HYDRO BLOK wallboard and accessories to wood or metal framing. The kit includes 100 galvanized screws and 100 galvanized washers. The screws feature a dual drive head compatible with #2 Phillips and #2 Robertson bits. The washers are designed for use with HYDRO BLOK wallboard installations in shower and wet area assemblies. Specifications Specification Details Part Number HBSCREWWASHER100