Independent Wall Liner (IWL)

Independent Wall Liner System is suitable for internal use in all commercial and domestic applications when bracing to the building structure is not possible and / or thermal requirements means a thermal bridge can not be created via bracing.

Can be used to provide a lining onto most masonry backgrounds, uneven walls and for concealing services within the cavity.

• 50mm, 60mm, 70mm, 92mm & 146mm I Stud system variants
• Maximum height up to 7.8m based on a limiting deflection of L/240 @ 200Pa
• Single and double plasterboard layer configurations
• No restriction on cavity size
• Quick, simple and cost-effective to use

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 up to 72mm wide U tracks and staggered across the base of the track at 600mm maximum centres with suitable fixings for 94mm and 148mm 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 maximum centres with suitable fixings for 94mm and 148mm wide U tracks.

Stud

Install a row of Metsec Drylining I 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).

Bracing

No bracing of the stud to the structure is required.

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.

PB24 / FS24 is required behind any horizontal plasterboard joint.

Position drywall screws not less than 10mm from the paper bound edge of the plasterboard 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.

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.