Synthetic Breathable Underpayment Installation Instructions: Caution: Always follow Safety Instruction, Building Codes and Safe Work Practices issues by the local Govt. bodies (e.g. OSHA / WCB) FT Synthetics HYDRA should be installed with Plastics Cap or Metal Cap nails with either ring shank or smooth shank Nails. DO NOT USE STAPLES. Use of staples will void the Manufacturer's warranty. FT Synthetics HYDRA is a secondary layer protection approved for installation over Plywood with proper fasteners.
