Siniat Weather Defence Board
BBA Agrément Certificate
Certificate type
Glass fibre mat-faced, gypsum-based sheathing board.
For use externally as a sheathing board.
Weather Defence is a revolutionary new external sheathing board, faced with water repellent material for superior weather protection. Strong, highly moisture resistant and A1 non combustible. Weather Defence is a faster way to a weather tight building compared to traditional sheathing board products. Complies with BS EN 15283 Type GM-H1, GM-I and GM-F..
Features and benefits:
- Dimensionally stable, reliable airtightness
- Quick and easy to cut and install saving time and reducing installed cost
- Water, weather and mould resistant, can now be left installed and exposed for up to 12 months on site before you need to complete the final cladding
- No need for cutting area, power tools or dust extractor
- Can eliminate the need for breathable membrane saving time and reducing installed cost
- Double BBA certified
- Fully A1 non-combustible, compliant for structures above 18m.
Application:
For use externally as a sheathing board.
Features | It is strong, highly moisture-resistant, non-combustible and has improved workability compared to traditional sheathing board products. Manufactured to BS EN 15283‐1 types GM‐F, GM‐H1, GM‐I and CE marked |
Finish | Matt-faced |
Material | Aerated calcium sulfate di-hydrate with liners constructed from polymers and glass fibre with moisture- and fire-resistant fillers/ fibres enclosed in gypsum core. Core and facers are bonded with starch. PVA edge glue. The board contains a water-resistant additive and a biocide to inhibit mould growth |
Size | 1200 x 2400 mm (w x l) |
Uniclass 2015 | |
CAWS | K10/115 Metal stud partition system K10/125 Metal stud partition system K10/15 Lining on timber K10/155 Wall lining system (metal studs) K10/165 Wall lining system (metal framing) |
Product Reference | Siniat Weather Defence Board |
Standard | To BS EN 12524, BS EN 12572, BS EN 15283‐1 and Euroclass A1 to BS EN 13501‐1, Class 0 to Building Regulations (E&W) |
Core | Moisture resistant |
Paper facings | Moisture resistant |
Nominal | 12.5 mm10.8 kg/m², 860 kg/m³, thermal resistance (R-value): 0.05 m²K/W. |
Edge profile | Square edge |
Additional properties | Thermal conductivity (to BS EN 12524): 0.25 W/m·K, water vapour resistance factor (to BS EN 12524): μ = 8, moisture content: <2%, moisture resistance: <3% (after two hours total immersion in water), longitudinal breaking load (to BS EN 15283‐1): ≥680 N, transverse breaking load (to BS EN 15283‐1): ≥310 N, reaction to fire: Non‐combustible, Euroclass A1 to BS EN 13501‐1, Class 0 to Building Regulations (E&W) |
Standard product features | Colour: Purple on the front face and white on the back face. Features: It is strong, highly moisture-resistant, non-combustible and has improved workability compared to traditional sheathing board products. Manufactured to BS EN 15283‐1 types GM‐F, GM‐H1, GM‐I and CE marked. Finish: Matt-faced. Material: Aerated calcium sulfate di-hydrate with liners constructed from polymers and glass fibre with moisture- and fire-resistant fillers/ fibres enclosed in gypsum core. Core and facers are bonded with starch. PVA edge glue. The board contains a water-resistant additive and a biocide to inhibit mould growth. Size: 1200 x 2400 mm (w x l). Recycled content: 12% post-consumer content. Recyclability: Gypsum core is recyclable. Embodied carbon: 0.241 kgCO2e/kg, cradle to gate. Red Listed materials: No. Country of origin: France. |
Embodied carbon | 0.241 kgCO2e/kg, cradle to gate |
Recyclability | Gypsum core is recyclable |
Recycled content | 12% post-consumer content |
- 10/4725 : Product Sheet 4
- 10/4725 : Product Sheet 5
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