12.5mm Siniat Weather Defence External Sheathing Board
Siniat 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..
Siniat Weather Defence Details
Thickness: 12.5mm
Width: 1200mm
Length: 2400mm
Board coverage: 2.88m2
Edge: Square Edge
Usage: Sheathing
Density: 860kg/m3
Weight: 31.1kg
Thermal Conductivity: 0.25W/mK
Thermal Resistance: 0.05m2K/W
Fire Rating: A1(Non-combustible)
Weather Defence is designed to be installed on:
• Light steel infill and oversail systems on concrete and steel frame buildings
• Modular buildings
Suitable for most façades
Weather Defence has two
BBA Certificates. One as a sheathing board for use behind a variety of
rainscreen types and as part of an insulated
render façade system.
-Brick Cladding Stone Cladding
-Stone Cladding
-Timber Rainscreen
-Metal
-Rainscreen Panels
-Insulated Render
12.5mm Weather Defence is an award-winning external sheathing board which has transformed building envelope construction and performance.
Weather Defence has been specified by over 45% of AJ100 British Architects
Allies Morrison, BDP, Scott Brownrigg and Sheppard Robson were amongst the early adopters of Weather Defence.
The design benefits it brings include:
• It is Euroclass A1, fully noncombustible so is suitable for structures above 18m in height
• It has two BBA certificates
• It achieves outstanding airtightness
• It is easy to cut, shape and bend, offering more options for design detailing
• Responsibly sourced and eligible for credits under BREEAM.
Weather Defence has been installed by over 75% of the Construction News’ top 25 main contractors
• It is 50% quicker to install than cement particle board
• It makes the building watertight for internal trades
• It is 30% lighter than cement boards, making it easy to lift and move around site
• Simply score and snap, no need for specialist cutting equipment or segregated areas
• It helps reduce site noise and dust emissions
• Can eliminate the need for a breather membrane helping to reduce project costs.
The new 2nd Generation Siniat Weather Defence Board has an improved formula and allows the board to be installed and exposed on frame for twelve months during construction, providing more flexibility to the project timeline.
SYSTEM PERFORMANCE
Gypsum technology is at the heart of Weather Defence’s system performance; its unique characteristics offer excellent fire performance, airtightness and high sound
insulation whatever framing system is used.
Facts:
-Weathering
-Thermal performance
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.
-Weather Defence weighs
10.8 kg/m2 which is 30% lighter than a
cement particle board of the same thickness, making it easier to lift and move around site
-Noise disturbance for neighbours As Weather Defence is so quiet to cut and fix, it has proved very useful for projects where neighbours are in close proximity – like extension projects or in built-up residential areas.
Please find all datasheets in PDF & BROCHURES section.
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12.5mm Siniat Weather Defence External Sheathing Board