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Description

Independent, metal stud lining system based on Fermacell Gypsum-Fibreboard linings.

General information
Specification data - Gypsum board wall lining systems
Product Reference

Fermacell 3S21 Independent Lining

Metal studs

50 mm

75 mm

100 mm

Finishing

Not required

Fermacell Fine Surface Treatment (FST)

Joint treatment

Fermacell Jointstik 1 mm glued joint

Square edged boards.

Fermacell Joint Filler 5–7 mm filled joint

For site cut boards.

Fermacell Joint Reinforcement Tape and Fermacell Joint Filler

Taper edge boards. N.B When using Tapered Edge Boards, first layer must be a Square Edge Board, for double layer systems.

Standard product features

Fire resistance:

60 minutes.

Stud centres:

600 mm.

Cavity between wall and studs (minimum):

10 mm.

Linings:

Two layers of 12.5 mm Fermacell Gypsum-Fibreboard.

- Lining fixings:

30 mm Fermacell screws at 400 mm centres and 40 mm Fermacell screws at 250 mm centres.

Insulation (minimum density):

50 mm mineral wool: 38 kg/m³.

Recycled content:

Best Fermacell gypsum fibreboard contains 100% recycled content. All by-products recyclable.

Other requirements:

Fire stopping around service penetrations. Frame out openings with the same number of layers of board as per above specification. Sockets backed using baffle boxes, intumescent putty pads or suitable rock mineral wool, sufficient to maintain the fire/acoustic performance.

Movement joints are required at maximum 8 linear metre intervals.

Refer to manufacturer's literature. Vapour barrier as required for high humidity areas.

For tiled areas reduce studs to 400 mm centres as required. Tile adhesive to be suitable for gypsum based substrate.

Provide door reinforcement as required to suit door weights and opening size. Ensure no vertical joints at door jambs.

Offset all board joints by minimum 200 mm.

Product Options

Metal studs:

  • 50 mm Fermacell DIN Standard Steel (50 mm fixing face, 0.6 mm gauge).
  • 75 mm Fermacell DIN Standard Steel (50 mm fixing face, 0.6 mm gauge).
  • 100 mm Fermacell DIN Standard Steel (50 mm fixing face, 0.6 mm gauge).

Partition performance (based on stud type and insulation density/ thickness):

- 50 mm stud:

  • Height (maximum): 3.00 m.
  • Thickness (overall): 75 mm.
  • Improved sound resistance (Rw): 22 dB.

- 75 mm stud:

  • Height (maximum): 3.50 m.
  • Thickness (overall): 100 mm.
  • Improved sound resistance (Rw): 22 dB.

- 100 mm stud:

  • Height (maximum): 4.00 m.
  • Thickness (overall): 125 mm.
  • Improved sound resistance (Rw): 22 dB.

Environmental information
Recycled content

Best Fermacell gypsum fibreboard contains 100% recycled content. All by-products recyclable

Literature
Third party certifications
  • 90/2439
  • ETA
  • ECO Institute
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