Hidden Plastic Clip Fixing

WPC Deck Clips are supplied with blackened stainless steel screws designed to be used with either timber or steel joists. Make sure that you specify either 55mm for timber joists or 42mm for steel joists (suitable for mild steel up to a thickness of 2.0 mm only) when ordering your deck clips.

Installation – Step by Step

Step #1: Install Start Clips and First Board

1. Install start clips on the edges of the ledger board (the part of the sub-structure supporting one end of the joists) centred on each joist;

2. Secure start clips with screws;

3. Push one edge of the Seventrust Composite decking board into the start clips, noting the first board must be straight and well secured;

4. Start your deck close to the existing structure and work outwards ensuring that a 5mm gap is left between the start board and any solid structure ;

Step #2: Install Deck Clips & Screws

5. Insert deck clip into hidden fixing channel of the Seventrust Composite decking board;

6. Align screw hole in deck clip with centre of joist, repeat this process along the length of the board at every joist;

7. Only screw deck clip half way down – do not fully tighten;

Step #3: Install Second Seventrust Composite Board

8. Slide the second deck board into place, making sure the Cosset deck clips fit into the groove;

9. Install the next connecting clip on the other side of the second board in the same manner as step #2;

10. Only screw deck clip half way down – do not fully tighten;

Step #4: Complete Installation

11. Tighten screws on deck clips in the first row;

12. Repeat this process tightening down each row after the board that follows is in place;

Step #5: Install the Last Board

Method 1: Using Fascia Board

13. Pre-drill pilot holes at an angle through the hidden fixing channel of the Seventrust Composite decking board into the substructure below;

14. Screw fixing screws through the pilot holes and fasten;

15. Attach a fascia board flush with the deck surface to prevent a trip hazard;

Method 2: With Deck Board Overhang

16. Pre-drill pilot holes at a 45° angle from below the deck surface through joist;

17. Position last board into deck clip that overhangs deck joist;

18. Screw fixing screws through the pilot holes and fasten;

19. Position fascia board below overhanging deck board;

Leave your comment

People who liked this article also liked
WPC decking colour and quality quest
Clean WPC decking methods
Seventrust Railing and Deck Installa
Outdoor WPC deck maintenance
What is wood plastic composite decki
Hidden Plastic Clip Fixing
Composite decking products applicati
Outlook for WPC and NFC production i
Market Analysis of Wood Plastic
Composite decking Fire-proof level
See More Photos