Developed specifically for Signature and ProDeck composite decking systems, these decking locking clips are designed to be used alongside standard T‑clips as part of a complete fixing solution. Installed beneath the boards, they act as a central stabiliser, helping to reduce movement and maintain correct board alignment throughout the life of the installation.
Each locking clip is fitted to the middle joist only, while T‑clips must be used on all remaining joists. Working together, this system helps maintain consistent spacing, improves overall deck stability, and supports a clean, professional finish — even during seasonal expansion and contraction.
Manufactured from durable stainless steel with a black finish, these clips are discreet once installed and play an important role in long‑term performance. Each pack contains 10 clips with matching screws, suitable for securing up to 10 decking boards.
Use one locking clip per decking board, positioned centrally on the middle joist and aligned with the centre of the board. Secure carefully without over‑tightening to avoid distortion.