Resilient Bar Partitions

A cost-effective way to achieve improved acoustic performance and often considered for part E compliance in both hotel and student accommodation sectors. Resilient bar (RB565) acts as a spacer on one side of the partition decoupling the plasterboard lining from the stud face resulting in improved sound insulation.

This enables slimmer partitions to be constructed, maximising floor space whilst still satisfying high acoustic requirement

• RB565 used in conjunction with 70mm & 92mm C Studs
• Maximum height up to 5.0m based on a limiting deflection of L/240 @ 200Pa
• Double layer plasterboard configurations
• Up to 120 minutes fire rating to BS476:22 1987
• Up to Rw63dB acoustic performance rating to BS EN ISO 717-1:1997 / BS EN ISO 717-1:2013
• Severe duty rating to BS 5234-2:1992

Framework Installation

To be read with reference to BS 8000:8 2023 and in conjunction with full Speedline / Tradeline project specific documentation which is created and available on request.

Head Track

Install Metsec Drylining U tracks to soffit in the centre of the profile at 600mm maximum centres for 72mm wide U tracks and staggered across the base of the track at 600mm centres with suitable fixings for 94mm wide U tracks.

Base Track

Install Metsec Drylining U tracks to the slab in the centre of the profile at 600mm centres for up to 72mm wide U tracks and staggered across the base of the track at 600mm centres with suitable fixings for 94mm and 148mm wide U tracks.

Stud

Install a row of Metsec Drylining studs friction fitted into tracks at 600 mm centres. Reduce to 400mm centres if partition is receiving ceramic tiling (it is not recommended to tile onto a single layer of 12.5mm plasterboard). It is important the offset sight line is observed to enable improved sound insulation performance

Resilient Bar (RB565)

Install Metsec Drylining RB565 resilient bar perpendicular to the studs at 600 mm centres using wafer head drywall Screws on one side only. Noggins of resilient bar RB565 must be fixed vertically at room ends, corners and door frames to provide 300mm plasterboard fixing centres.

Deflection Head

If structural deflection is required, please refer to the Metsec Drylining Standard deflection head detail for guidance.

Partition Brace / Flat Strap

Metsec Drylining flat strap (FS24) is needed behind horizontal plasterboard joints to enable the correct plasterboard perimeter fixings, prevent passage of fire and reduce cracking. In double layer applications FS24 is installed in-between the plasterboard layers behind the horizontal plasterboard joint in the outer layer on both sides. On the side of the partition where resilient bar is located RB565 is also required as a backer to any horizontal joint in the inner layer of plasterboard.

Plasterboard Installation

Double Layer – Lining onto stud side of partition

Inner layer of plasterboard can be screw fixed at 600mm maximum centres within the body and perimeter of the board however the outer layer must be fixed at 300mm maximum centres within the body and perimeter.

Vertical plasterboard joints on the inner layer must be staggered from one side of the partition to the other. The outer layer of plasterboard must be fixed with all joints staggered in relation to the inner layer. FS24 must be included behind any horizontal plasterboard joint in between the inner and outer plasterboard layer.

Position drywall screws not less than 10mm from the bound edge of the board and 13mm from any cut edge. Ensure a minimum of 10mm penetration into the studwork.

Recess heads of screws below surface of plasterboard but do not break paper or gypsum core.

Double Layer – Lining onto RB565 side of partition

Inner layer of plasterboard can be screw fixed at 600mm maximum centres within the body and perimeter of the board into each RB565 however the outer layer must be fixed at 300mm maximum centres into each RB565.

Vertical plasterboard joints on the inner layer must be staggered from one side of the partition to the other. The outer layer of plasterboard must be fixed with all joints staggered in relation to the inner layer. RB565 must be located behind any inner horizontal plasterboard joint and FS24 must be included between the inner and outer board behind any horizontal plasterboard joint in outer plasterboard layer.

Position drywall screws not less than 10mm from the bound edge of the board and 13mm from any cut edge. Ensure a minimum of 10mm penetration into the RB565.

Recess heads of screws below surface of plasterboard but do not break paper or gypsum core.

The above is issued as a guide – full system specific documentation (dependent on required performance) is available on request.

Last updated 20/07/23

For more information or for details of your nearest stockist please contact us on +44 (0) 121 601 6075 or Metsec.DryLining@voestalpine.com.