Thruwall
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Can a render be directly applied on Siniat Weather Defence board?
Siniat Weather Defence is not suitable to receive a direct render finish. The only product in the range that is suitable for such a finish is the Bluclad product. There is a BBA associated with Bluclad and Weber Rend and general guidance can be found in the Bluclad brochure.
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Can cavity barriers be directly fixed to Weather Defence?
Siniat general recommendations are to fix 3rd party products through the Weather Defence board into the supporting metal or timber framework behind which will be installed at maximum 600mm centres. It is possible to fix in the board only, for this the correct fixing type and number of fixings used must be correctly to install the product and provide
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Do the wind loadings stated in the Weather Defence brochure account for internal wind loadings as well as external wind loadings?
The designed for wind load is the maximum magnitude that can be withstood by the Thruwall element. The load can be positive or negative (pressure or suction). Typical design range is 1kN/m2 to 1.8kN/m2 but can be more or less. Internally, unless advised by the project design team, internal pressure is default designed to 200Pa (0.2kN/m2) which is ea
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How should Siniat Weather Defence board joints be treated when used in Thruwall systems?
There are two ways in which the board to board joints in Siniat Weather Defence can be treated as part of the Siniat Thruwall system. Which method is used is dependant on the performance the element is required to achieve. Siniat Weather Defence™ Joint Tape may be used where no fire resistance or acoustic performance is required. This is to achieve