Siniat Timber floors and ceilings
7 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.
Siniat plasterboard ceilings to timber joist floors and ceilings, fixed direct, on resilient bars or on an MF grid, EN classified to 30 or 60 minutes with fire from below. Joist sizes are the tested minimums. Use the filter to narrow by performance or board.
| Reference | Build-up | Fire (mins) | Rw (dB) | Ln,w (dB) | Thickness (mm) | Weight (kg/m2) | Max span (mm) | |
|---|---|---|---|---|---|---|---|---|
| 225x44-12dB-100G | Load-bearing timber floor: 1x 12.5mm Siniat dB Board to underside of min. 225x44mm timber joists at 600mm centres with perimeter and intermediate noggings; 100mm glass mineral wool; min. 18mm OSB floor. REI30, fire from below only. | 30 | 43 | 71 | 255.5 | 39 | ||
| 195x44+RB-15F | Load-bearing timber floor: 1x 15mm Siniat Fire Board on Siniat Resilient Bars at 400mm centres to min. 195x44mm timber joists at 600mm centres; no insulation; min. 18mm T&G chipboard floor. REI30, fire from below only. | 30 | 46 | 75 | 245 | 40 | ||
| 195x44-212F-100G | Load-bearing timber floor: 2x 12.5mm Siniat Fire Board to underside of min. 195x44mm timber joists at 600mm centres with perimeter and intermediate noggings; 100mm glass mineral wool; min. 18mm T&G chipboard floor. REI60, fire from below only. | 60 | 46 | 70 | 238 | 50 | ||
| 220x47+RB-212F | Load-bearing timber floor: 2x 12.5mm Siniat Fire Board on Siniat Resilient Bars at 400mm centres to min. 220x47mm timber joists at 600mm centres; no insulation; min. 18mm OSB floor. REI60, fire from below only. Rw+Ctr correction -6 dB. | 60 | 51 | 70 | 280 | 50 | ||
| 195x44+RB-212Un-100G | Load-bearing timber floor: 2x 12.5mm Siniat Universal Board on Siniat Resilient Bars at 400mm centres to min. 195x44mm timber joists at 600mm centres; 100mm glass mineral wool; min. 18mm T&G chipboard floor. REI60, fire from below only. Rw+Ctr correction -7 dB. | 60 | 57 | 58 | 255 | 51 | ||
| 195x44+MF-215F-100G(313) | Load-bearing timber floor: 2x 15mm Siniat Fire Board on Siniat suspended MF grid ceiling below min. 195x44mm timber joists at 600mm centres; 100mm glass mineral wool; min. 18mm T&G chipboard floor. REI60, fire from below only. Rw+Ctr correction -6 dB. | 60 | 59 | 62 | Min. 313 | 55 | ||
| 150x35-215F-100G | Timber ceiling (non-load-bearing): 2x 15mm Siniat Fire Board to min. 150x35mm timber ceiling joists at 600mm centres with perimeter and intermediate noggings; 100mm glass mineral wool. EI60, fire from below only; max span given is the fire-state span. | 60 | 40 | 180 | 27 | 4400 |
System references, build-ups and performance figures are Siniat's own data, reproduced here from Siniat Drywall Manual for reference only, with credit to Siniat.
Each reference links to Siniat's page for the full, current specification - always specify from Siniat'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 Siniat and have a query pertaining to this library, please email info@howeceilings.co.uk. Data retrieved 10 October 2026.
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