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Hush Therm 25 Underfloor Heating Board
Suitable for:
- domestic
- residential
- industrial
- education
- healthcare
- leisure
Hush Therm 25 is a pre-routered, high-mass gypsum fibre board designed to accept 16/18mm underfloor heating pipes. As a dry screed solution, it incorporates integrated pipe channels for efficient heating and cooling systems (Type A to DIN EN 1264), offering fast installation, reduced system height and low overall weight.
When combined with the 5mm Hush FFR resilient acoustic layer, the system provides enhanced impact and airborne sound reduction while maintaining strong thermal performance. The board is non-combustible (A2 classification to DIN EN 13501-1) and supported by ETA-03/0050 certification for gypsum fibre systems.
For advice on the use of Hush Therm 25 Underfloor Heating Board, as part of a system within any project, please contact our experienced technical team on 0151 933 2026 who will be happy to give comprehensive and practical advice to meet with your requirements.
Acoustic Performance - Typical Results*
Impact  dB |
Airborne  dB |
| 49 | 71 |
Product Data
- Board size: 1000mm x 500mm x 25mm thick
- Resilient layer: 5mm Hush FFR rubber acoustic layer
- Pipe compatibility: Designed for 16/18mm UFH pipes
- Milling depth: 18mm (suitable for 16–18mm multilayer plastic pipe)
- Pipe spacing: 150mm (full occupancy)
- Recommended pipe: MKV multilayer pipe, 16/18mm diameter
- Mass: Therm 25: 27 kg/m² Round 25: 23 kg/m²
- Fire classification: A2 non-combustible (DIN EN 13501-1)
- European Technical Assessment: ETA-03/0050 (Gypsum fibre board)
- Wet room suitability: W0-I and W1-I (to DIN 18534)
- 10mm Gypsum fibre dry screed panel
- Hush Therm pre-routered UFH board
- Routered sections at 138mm spacing
- 5mm Hush FFR resilient impact layer
- 15mm OSB subfloor
- 253mm posi-joists @ 600mm centres
- 100mm Hush acoustic mineral wool slab
- 16mm Hush resilient bar @ 400mm centres
- 2 × 15mm Gyproc fireline board
Full fitting instructions are supplied with all products and are available to download from the Installation Guides section.
Should you have any technical questions prior to or during installation, please call 0151 933 2026 for friendly and straightforward advice.
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