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

General information

Uniclass 2015

Ss_25_10_30_35 Gypsum board partition systemsPrimary


K10/15 Lining on timber

K10/205 Lining on timber

Specification data - Gypsum board partition systems

Product Reference

Fermacell 1H11 Timber Stud Partition

Timber studs

75 x 50 mm

89 x 38 mm


40 mm

70 mm

Lining fixings

30 mm Fermacell screws at 250 mm centres

35 mm + Staples at 200 mm centres




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.

Standard product features

Fire resistance:

30 minutes.

Stud centres:

600 mm.

Insulation (minimum density):

30 kg/m³ mineral wool.


One layer of 12.5 mm Fermacell 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

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

- 75 x 50 mm stud:

  • Height (maximum): 4.10 m.
  • Thickness (overall): 100 mm.
  • Airborne sound resistance using 70 mm x 30 kg/m³ mineral wool (Rw): 44 dB.

- 89 x 38 mm stud:

  • Height (maximum): 4.10 m.
  • Thickness (overall): 114 mm.
  • Airborne sound resistance (Rw): 44 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


Fermacell Orange Book

Fermacell Orange Book

Fermacell Product Selector

Fermacell Product Selector

Timber Frame Systems

Timber Frame Systems

Third party certifications

  • 90/2439
  • ETA
  • ECO Institute

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