Siniat Weather Defence Systems
External sheathing board system.
For superior weather protection, the system is a faster way to a weather tight building compared to traditional sheathing board products.
An external sheathing board, faced with water repellent material for superior weather protection. Strong, highly moisture resistant and A1 non-combustible. The system 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 18 m.
Application:
For superior weather protection, the system is a faster way to a weather tight building compared to traditional sheathing board products.
Features | Dimensionally stable, reliable airtightness, quick and easy to cut and install saving time and reducing installed cost, water, weather and mould resistant |
Finish | Should be sealed with GTEC Fire Rated Silicone Sealant or Weather Defence Joint Tape. Non-itch surface |
Material | Aerated calcium sulfate di-hydrate with liners made from non-woven tissue with fillers and fibres enclosed inside gypsum core. Core and papers bonded with starch. The board contains a water-resistant additive and a biocide to inhibit mould growth |
Shape | Square |
Size | 1200 x 2400 mm (w x l), 12.5 mm thickness |
Uniclass 2015 | |
CAWS | K11/485 Wall sheathing |
Product Reference | Siniat Weather Defence Systems |
Additional supports | - |
General | Suitable framing: Steel or Timber. All mechanically fixed cladding/insulation systems must be fixed back to framework or may be fixed with appropriate fixing, e.g. stainless steel SnapToggle by Toggler |
Size | Steel: 100 x 35 x 1.2 mm (minimum) or timber: 140 x 38 mm (minimum) |
Sheathing material | One 12.5 mm-thick Weather Defence BoardTwo 12.5 mm-thick Weather Defence Boards |
Rigid board insulation | 50 mm-thick, 45 kg/m³ density rock mineral wool (supplied by others) |
System accessories | NoneResilient Bar |
Internal board(s) | One 12.5 mm-thick GTEC Aqua BoardOne 12.5 mm-thick GTEC Fire BoardsOne 12.5 mm-thick GTEC LaDura BoardsOne 12.5 mm-thick GTEC Megadeco BoardsOne 15 mm-thick GTEC Aqua BoardsOne 15 mm-thick GTEC Fire BoardsOne 15 mm-thick GTEC LaDura BoardsOne 15 mm-thick GTEC Megadeco BoardsTwo 12.5 mm-thick GTEC Aqua BoardsTwo 12.5 mm-thick GTEC Fire BoardsTwo 12.5 mm-thick GTEC LaDura BoardsTwo 12.5 mm-thick GTEC Megadeco BoardsTwo 15 mm-thick GTEC Aqua BoardsTwo 15 mm-thick GTEC Fire BoardsTwo 15 mm-thick GTEC LaDura BoardsTwo 15 mm-thick GTEC Megadeco Boards |
Sealing | GTEC Fire Rated Silicone Sealant and Weather Defence Joint Tape |
Acoustic performance | Dependent on system build-up |
Fire performance (to BS 476-22) | Dependent on system build-up |
Properties | Nominal weight: 10.8 kg/m², density: 860 kg/m³, thermal resistance (R-value): 0.065 m²K/W, thermal conductivity (K-value): 0.25 W/mk |
Standard product features | Colour: Coloured purple on the front face and white on the back face. Features: Dimensionally stable, reliable airtightness, quick and easy to cut and install saving time and reducing installed cost, water, weather and mould resistant. Finish: Should be sealed with GTEC Fire Rated Silicone Sealant or Weather Defence Joint Tape. Non-itch surface. Material: Aerated calcium sulfate di-hydrate with liners made from non-woven tissue with fillers and fibres enclosed inside gypsum core. Core and papers bonded with starch. The board contains a water-resistant additive and a biocide to inhibit mould growth. Shape: Square. Size: 1200 x 2400 mm (w x l), 12.5 mm thickness. Recycled content: Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website. Recyclability: Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website. Embodied carbon: Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website. Red Listed materials: Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website. |
Embodied carbon | Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website |
Recyclability | Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website |
Recycled content | Refer to the Plasterboard Health and Safety Datasheet available on Siniat's website |