170mm Decking Installation Jig for Concealed Fastening

This 170mm decking installation jig is a specialised tool designed for installing timber decking using concealed fastening methods. It allows for the installation of boards without visible screw heads, providing a clean and professional finish. The tool is constructed with hardened screw guides to manage ceramic coated deck screws effectively. It suits both DIY enthusiasts and professional contractors working on domestic garden projects or larger commercial timber terrace installations where aesthetics and durability are required.

This jig is ideal for creating high-standard walkways, ramps, and terraces across various UK settings. Whether you are renovating a private patio in a rainy coastal garden or installing durable outdoor seating in a busy commercial courtyard, consistent spacing is vital. Using this tool helps prevent water from pooling around screw heads, which is essential for protecting timber from rot during the wet UK winter months. It works reliably on both softwood and hardwood decking boards, ensuring that drainage and natural wood expansion are managed correctly across all outdoor surfaces.

To begin, secure the jig firmly to your joist before adjusting the integrated clamp to match your specific board width. You must use ceramic coated deck screws, which are sold separately, to ensure the concealed fastening works as intended. The jig includes a hex shank Robertson No.1 bit driver for ease of use. By utilising the built-in spacers, you can maintain precise gaps between boards without needing additional measuring tools. This methodical approach ensures a level and structurally sound finish for every timber board installed.

The tool features a 170mm profile and includes hardened guides specifically designed for ceramic coated screws. It offers integrated board spacers that create accurate gaps of 3.5mm, 4.5mm, or 5.5mm to allow for essential drainage. For added convenience, the jig incorporates on-board tool storage and an adjustable clamp to accommodate various board widths. This single-option tool is a practical solution for achieving professional results on any timber decking project requiring concealed fixings.