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Everflex Fire-Fill Acrylic SealantVendor:
For penetration pathways and expansion joints requiring a fire-resistant barrier, Everflex Fire-Fill Acrylic Sealant is tested in accordance with AS1530.4 and assessed to AS4072.1. This waterborne co-polymer-based intumescent sealant expands when exposed to fire, forming an inorganic plug that helps prevent fire transmission through...- From $10.93
- From $10.93
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Adheseal HV Duct Acrylic SealantVendor:
Adheseal HV Duct is a high-strength acrylic HVAC duct sealant for high-velocity air ducts, sheet-metal seams, duct joints and dust extraction systems. It cures to form a flexible, paintable and dust-proof seal, making it a practical cartridge-applied duct sealing compound for air-conditioning, ventilation and...
- From $4.81
- From $4.81
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Bostik Fireban One Polyurethane SealantVendor:
For joints in insitu concrete, precast panels, blockwork, plasterboard, and fiber cement sheet requiring fire or acoustic certification, Bostik Fireban One Polyurethane Sealant provides up to a 4-hour fire rating under AS 1530.4-2014 and AS 4072.1-2005. This Australian-made, one-part intumescent sealant cures to form...- From $16.73
- From $16.73
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Frequently Asked Questions
How do fire-rated sealants work?
Intumescent fire-rated sealants expand when exposed to heat, filling gaps to block fire and smoke. The Everflex Fire-Fill and Bostik Fireban One are intumescent products rated for up to four hours under AS1530.4 and AS4072.1.
What fire rating do these sealants achieve?
The Everflex Fire-Fill (acrylic) and Bostik Fireban One (polyurethane) each achieve up to a four-hour fire resistance rating under AS1530.4 and AS4072.1. The HV Duct carries an AS/NZS 1530.3 smoke development index for duct sealing.
Can fire-rated sealants handle joint movement?
Yes, movement capability varies by product. The SA Sealproof silicone handles ±50% movement. The Fireban One polyurethane handles ±25%. The Everflex Fire-Fill acrylic handles ±20%. The HV Duct acrylic is rated at ±5% for low-movement duct penetrations.
What is the maximum joint width for fire-rated sealants?
The Bostik Fireban One accepts joints up to 50 mm wide. Check the product data sheet for each fire-rated sealant, as maximum joint width and minimum backing depth affect the fire rating. Incorrect installation can void the fire certification.
What chemistry are fire-rated sealants?
Fire-rated sealants use different chemistry types. The Everflex Fire-Fill and HV Duct are acrylic-based. The Bostik Fireban One is polyurethane-based. The SA Sealproof is a low-modulus silicone. Chemistry type does not affect the fire resistance rating.