Timber stud insulated partition system based on Fermacell Powerpanel H2O 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 1H21 H20 Timber Stud Partition

Timber studs

75 x 50 mm

89 x 38 mm


Not required

Powerpanel Surface Finish

Standard product features

Fire resistance:

30 minutes.

Stud centres:

600 mm.


One layer of 12.5mm Fermacell Powerpanel H20 each side.

- Fixings:

35 mm Powerpanel screws at 250 mm centres.

Joint treatment:

Fermacell Jointstik 1 mm glued joint.

N.B. For Powerpanel H2O - ALL joints must be fully supported / backed.

Insulation (minimum density):

60 mm stone mineral wool: 25 kg/m³ density.

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 cement 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):

- 89 x 38 mm stud:

  • Height (maximum): 4.10 m.
  • Thickness (overall): 114 mm.
  • Airborne sound resistance (Rw): 42 dB.


Fermacell Orange Book

Fermacell Orange Book

Fermacell Product Selector

Fermacell Product Selector

Third party certifications

  • British Board of Agrément (BBA) - certficate
  • ETA
  • ECO Institute

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