Acoustic Stud Partitions

A cost-effective way to achieve improved acoustic performance in both domestic and commercial situations. Acoustic Stud has longer plasterboard fixing flanges than conventional C stud with an offset sightline resulting in improved sound insulation.

This enables slimmer partitions to be constructed, maximising floor space whilst still satisfying higher acoustic requirements, both single and double layer plasterboard configurations available.

• 70mm & 92mm variants
• Maximum height up to 5.9m based on a limiting deflection of L/240 @ 200Pa
• Up to 120 minutes fire rating to BS 476-22:1987
• Up to Rw58dB acoustic performance rating to BS EN ISO 717-1:1997 / BS EN ISO 717-1:2013
• Medium, heavy & severe duty ratings 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 maximum 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.

Acoustic Stud

Install a row of Metsec Drylining acoustic studs friction fitted into tracks at 600mm 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

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 partition brace (PB24) or flat strap (FS24) is needed behind horizontal plasterboard joints to enable the correct plasterboard perimeter fixings, prevent passage of fire and reduce cracking. In single layer applications PB24/FS24 is fixed to the studs. In double layer applications FS24 is installed in-between the plasterboard layers behind the horizontal plasterboard joint in the outer layer.

Plasterboard Installation

Single Layer

Plasterboard must be fixed at 300mm maximum centres within the body and perimeter of the board into the knurled area of the stud only.

Vertical plasterboard joints must be staggered from one side of the partition to the other.

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

Double Layer

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 into the knurled area of the stud only.

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.

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.