170mm Decking Installation Jig for Concealed Fastening

This jig is designed for installing timber decking without visible screw heads. It features hardened guides to manage ceramic coated screws and an integrated clamp that adjusts to different board widths. Built-in spacers allow for precise gaps of 3.5mm, 4.5mm, or 5.5mm. These consistent spaces are essential for drainage and natural wood expansion. The tool includes a hex shank Robertson No.1 bit driver and onboard storage.

Use this tool when building timber terraces in domestic gardens or commercial outdoor seating areas. It is particularly useful for creating professional-looking walkways that withstand the wet UK winter weather. The concealed fastening method prevents water from pooling around screw heads. This helps protect the wood from rot over time. It works well on both softwood and hardwood decking projects.

To install, secure the jig to your joist and adjust the clamp to match your board width. Use the integrated spacers to maintain even gaps across the entire surface. Ensure you use compatible deck screws for the best results. This method ensures a level and tidy finish for any outdoor flooring project.