SINTEF Technical Approval - TG 20457 Side 2 av 3 Table 2 Product characteristics for Weather Defence Property Test method EN DoP 1) Control limit 2) Air tightness material 12114 - ≤ 0.10 Air tightness construction, joints sealed with tape Rain tightness construction, joints sealed with tape Water vapour resistance µ s d -value Flexural strength Longitudinal Transversal Shear strength 12114 12865 ISO 12572 15283-1 15283-1 / 520 - - 8 - ≥ 408 ≥ 160 ≥ 500 ≤ 0.10 3) 600 3) - ≤ 0.076 4) ≥ 408 3) ≥ 160 3) ≥ 500 Water absorption 520 - H1, ≤ 5 % Resistance to wind suction SP method - No vuispibtloe2d1e0fo0rPmaa 3 t ) ions Thermal conductivity ISO 10456 / 0.25 15283-1 1) Declared value in DoP (Declaration of Performance) 2) Control limit in connection to production control at the manufacturer and annual control at SINTEF 3) Result from type testing 4) Calculated from µ-value for a 9.5 mm board ≤ 0.25 Unit m³/m²h50Pa m³/m²h50Pa Pa - m N N - - W/mK Durability The durability for wind barrier system Weather Defence with SIGA Wigluv sealing tape and SINIAT WAB 41 screws is considered to be satisfactory based on laboratory testing before- and after accelerated artificial climate ageing. The wind barrier system has been exposed for accelerated artificial ageing in 4 weeks in climate simulator according to NT Build 495. The durability for SIGA Wigluv's adhesion properties to the wind barrier board is determined based on accelerated artificial ageing 2 weeks in climate simulator followed by 12 weeks of heat ageing according to EN 1296. Local conditions on the site affect the actual climate stress, which in turn depends on the amount of driving rain. Experience shows that heavy rain showers, and gusts of wind, pose a great danger of water intrusion and damage to the wind barrier system. Therefore, it is generally recommended to install exterior cladding as soon as possible after the wind barrier has been installed. In places with a low driving rain load (less than 200 mm of driving rain per year), it is considered that the wind barrier system can be uncovered for up to one year before external cladding is installed. It is up to the contractor to assess the driving rain load, and local conditions, in each individual construction project, see also Byggforskserien (SINTEF Building Research Design Guides) 451,031 Klimadata for dimensjonering av regnpåkjenning (Climate data for dimensioning of rain stress). Air tightness The airtightness of the wind barrier system makes it possible to fulfil any requirements regarding airtightness (n 50 ) given in the building regulations and in the Norwegian passive house standards before the vapour barrier is mounted. 5. Environmental aspects Substances hazardous to health and environment Weather Defence contains no hazardous substances with priority in quantities that pose any increased risk for human health and environment. Chemicals with priority include CMR, PBT or vPvB substances. Waste treatment/recycling Weather Defence shall be sorted as gypsum. The product shall be delivered to an authorized waste treatment plant for material recycling. Environmental declaration An environmental declaration (EPD) has been worked out according to EN 15804 for Weather Defence. For complete documentation see EPD no. 8-1199:2017, www.inies.fr 6. Special conditions for use and installation Design considerations The boards are attached to a timber frame or sheet metal profiles. The boards must only be used in such a way that they are protected by a rain shield in the finished structure. Installation Weather Defence is installed on studs with maximum centre distance c/c 600 mm. The boards are installed on a frame with screws of type SINIAT WAB 41 at intervals of maximum 300 mm in all board joints and in the middle section of the boards. The screw heads must be flush with the surface of the board. The distance from the screws to the edge of the boards must be at least 10 mm and at least 15 mm from edges where the gypsum core is exposed. For contact with base, windows, doors, roof, and bushings, see relevant instructions in Byggforskserien. A silicone sealant shall be used in junctions between Weather Defence and other framing materials.
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