Fermacell 1HT11 Load Bearing Timber Stud Partition

Fire resistance:

30 minutes.

Stud centres:

600 mm.

Linings:

One layer 12.5 mm Fermacell each side.

Insulation (minimum density):

• 40 mm mineral wool: 30 kg/m³.

• 90 mm mineral wool: 10 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.

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

- 75 x 50 mm stud, 40 mm mineral wool (30 kg/m³ density):

• Height (maximum): 3.00 m.

• Thickness (overall): 100 mm.

• Airborne sound resistance (Rw): 44 dB.

• Applied load: 2.5 N/mm².

- 89 x 38 mm stud, 90 mm mineral wool (10 kg/m³ density):

• Height (maximum): 2.60 m.

• Thickness (overall): 114 mm.

• Airborne sound resistance (Rw): 47 dB.

• Applied load: 5.56 kN per stud.

• 5–7 mm filler joint option is not suitable for use on this size of stud.