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Timber stud insulated partition system based on Fermacell Gypsum-Fibreboard linings.

General information
Specification data - Gypsum board partition systems
Product Reference

Fermacell 1H31 Timber Stud Partition

Timber studs

75 x 50 mm

89 x 38 mm

Lining fixings

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

35 mm + Staples at 400 mm centres and 50 mm + Staples at 200 mm centres


70 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

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:

90 minutes.

Stud centres:

600 mm.


One layer of 12.5 mm Fermacell and one layer of 10 mm Fermacell to each side.

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

Insulation (minimum density):

  • 70 mm mineral wool: 30 kg/m³.

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

- 75 x 50 mm stud:

  • Height (maximum): 4.10 m.
  • Thickness (overall): 120 mm.
  • Airborne sound resistance (Rw): 54 dB.

- 89 x 38 mm stud:

  • Height (maximum): 4.10 m.
  • Thickness (overall): 134 mm.
  • Airborne sound resistance (Rw): 54 dB.
  • 5–7 mm filler joint option is not suitable for use on this size of stud.

Environmental information
Recycled content

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

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