HIDDEN FASTENING SYSTEMS FOR STANDARD BOARDS
The Roots fastening system is the result of a lengthy, rigorous process of developing, testing and finalisation, assisted by the FCBA engineers in Bordeaux.
Roots is the only underside, hidden fastening system designed for standard boards to have been assessed as compliant with the requirements of standard NF DTU 51.4 relating to fastenings for decking boards in stable and moderately stable, tropical and resinous woods.
FOR STANDARD BOARDS
ALL TYPES OF WOOD
IN ALL WEATHER CONDITIONS
VERY HIGH MECHANICAL STRENGTH
FULL VENTILATION OF UNDERSIDE OF BOARDS
NO WATER RETENTION
PROTECTION OF THE JOIST WITH CAPPING
FASTENERS AND JOISTS COMPLETELY INVISIBLE
EASY TO FIT AND DISMANTLE
REUSABLE AFTER DISASSEMBLY
QUALITY AND PERFORMANCE WITHOUT
DTU 51.4 - Fastening requirements for decking boards
The Roots hidden fastening system has had a technical evaluation by the FCBA confirming its compliance with the requirements of the standards NF DTU 51.4 and NF B54-040 regarding decking board fastenings.
FLIP & FIX
The Roots fastenings are easy to install. They need only 2 successive, repeated operations, flip & fix. The fastenings are screwed under the boards. They are then screwed onto the joist in the usual way, on one side of the fastening.
The other side is held by a system similar to a “tongue-and-groove” process, with the adjacent fastening.
Flip & fix
Flip the board over so the underside is on top.
Screwing the Roots fastening to the underside of the board.
Turn the board over and insert it into the adjacent fastening.
Screwing the Roots fastening in the normal way onto the joist.
EASY TO FIT, FROM THE FIRST TO THE LAST BOARD
The starting piece, identifiable by the word START engraved on it, has a lateral overhang of 10 mm as required by the standard NF DTU 51.4. It is designed for holding the fastening for the first board.
Fastening the 1st board
Fixing for the first board supplied in every pack, is designed to be completely embedded in the starting piece (START), thus ensuring it is in exactly the right position.
End piece (END)
The end piece, identifiable by the 4-END engraved on it, allows the final board, up to 70 mm wide, to be fitted easily.
It ensures a lateral overhang of 10 mm as required by the standard NF DTU 51.4.
Step drill bit with stop
The fixed stop, pre-drilling bit is specially designed to avoid drilling through the board, and ensure quick installation, compliant with requirements for pre-drilling boards.
It is made of shaped, ground HS steel.
INTEGRATED VENTILATION DEVICE
The Roots fastenings provide an effective solution for detaching the boards from their supports and ventilating their underside.
The built-in separation device which acts as a ventilation shim reduces the risk of water being trapped, and also of the boards warping.
Roots Tropical (blue) can be used with tropical and modified wood species, while Roots Resinous (green) can only be used with resinous wood species. Roots Resinous is the only and unique invisible fixation on the market for resinous woods conform to DTU 51.4.
The two main differences between the two products are the number of screw points and screw size, with Resinous requiring more and larger screws, and no pre-drilling required.