Fire Retardant Silicone Sealant Alseal AS-202 is a one-part, ready-to-use, 100% neutral silicone fire sealant designed to form an elastomeric fire-resistant seam in construction applications. It helps control the spread of fire, smoke, and noxious fumes in a given area surrounded by firewalls for up to four hours, depending on the connection configuration.
- Fire rating up to 4 hours (BS EN 1366-4: 2006)
- ASTM C920 compliant
- ±50% movement capability
- Excellent weather and UV resistance
- Excellent adhesion to most substrates
- Matte finish
Recommended for firestop sealing of interior and exterior building and construction joints, where a fire rating of up to 4 hours is required. It may be used to seal vertical and horizontal joints between metals, masonry, concrete, and other common construction materials.
Joint Design
- The specified size of the sealant bead size should be calculated so that it corresponds to the potential for compression and expansion of the sealant in relation to the intended width of the joint due to expansion and contraction.
- Generally, calculation of the width sealant bead should be computed on the basis of a maximum ±50 % movement capability
- Minimum joint depth should not be less than 6 mm to accommodate movement.
- The sealant design joint width-to-depth ratio should be 2:1.
Alseal AS-202 Fire Retardant Silicone Sealant has been tested per AS 1530.4: 2014 test method, certified by Exova Warringtonfire Australia Pty Ltd, and meets Australian building standards.
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