Fermacell Load-bearing timber stud walls
6 system references
We are a supply and fit installation contractor, not the manufacturer. Information here is reproduced from manufacturers' literature for reference only; always confirm it directly with the manufacturer before specifying, ordering or installing.
Load-bearing timber frame walls lined with fibre gypsum board, rated REI30 to REI60 with the stud load stated for each. Use the filter to narrow by performance or board.
| Reference | Build-up | Fire EN | Rw (dB) | Max height (mm) | Thickness (mm) | Load | Mass (kg/m²) | |
|---|---|---|---|---|---|---|---|---|
| 1 HT 14 | 114 mm wall. 89 × 38 timber studs and head/base plates; 12.5 mm fibre gypsum each side, stapled; no mineral wool. Partition load 5.56 kN/stud. | REI30 | 41 | 2600 | 114 | 5.56 kN/Stud | 35 | |
| 1 HT 22 (170 mm) | 170 mm wall. 140 × 38 timber studs and head/base plates; 15 mm fibre gypsum each side, stapled; 140/30 mineral wool. Partition load 10.75 kN/stud. | REI60 | ≥46 | 2700 | 170 | 10.75 kN/stud | 48 | |
| 1 HT 22 (150 mm) | 150 mm wall. 120 × 45 timber studs and head/base plates; 15 mm fibre gypsum each side, stapled; 120/30 mineral wool. Partition load 10.8 kN/stud. | REI60 | ≥46 | 3000 | 150 | 10.8 kN/stud | 48 | |
| 1 HT 23 | 127 mm wall. 89 × 38 timber studs and head/base plates; 2 × 12.5 mm fibre gypsum on the REI 60 fire side and 12.5 mm on the REI 30 fire side, stapled/nailed; 90/10 mineral wool. 60 mins from the double-layer side, 30 mins from the single-layer side. | REI60-30 | ≥46 | 2600 | 127 | 5.56 kN/stud | 57 | |
| 1 HT 23 – Twin Wall | ≥ 258 mm wall. 2 × 89 × 38 timber studs and plates with ≥ 10 mm air gap; 2 × 12.5 mm fibre gypsum (inner cavity single layer may be a timber-based product), stapled/nailed; 90/10 mineral wool. | REI60 | ≥66 | 2600 | ≥ 258 | 5.56 kN/stud | 112 | |
| 1 HT 24 | 139 mm wall. 89 × 38 timber studs and head/base plates; 2 × 12.5 mm fibre gypsum each side, stapled/nailed; 90/10 mineral wool. | REI60 | ≥51 | 2600 | 139 | 5.56 kN/stud | 66 |
System references, build-ups and performance figures are Fermacell's own data, reproduced here from fermacell Specification Guide for reference only, with credit to Fermacell.
Each reference links to Fermacell's page for the full, current specification - always specify from Fermacell's own documentation, HCI will not be held liable for a misspecification where this page has been used in lieu of the true manufacturer.
If you represent Fermacell and have a query pertaining to this library, please email info@howeceilings.co.uk. Data retrieved 10 October 2026.
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