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Use Everflex Fire-fill Fire Rated & Acoustic Joint Sealant for: Sealing gaps around cables, pipes, conduits, and ducts to maintain fire integrity and reduce sound transmission.
Everflex Fire-fill Fire Rated & Acoustic Joint Sealant is a single-component, waterborne acrylic co-polymer sealant designed specifically for Australian construction conditions. Engineered for both fire resistance and soundproofing, Fire-fill is ideal for sealing penetrations around cables, conduits, metal pipes, and ducts in walls, floors, and ceilings. With intumescent properties, excellent flexibility, and easy tooling, it provides a smooth, paintable finish. Fire-fill is suitable for interior and exterior applications, offering up to 4 hours of fire resistance depending on joint configuration. Its low odour, non-toxic formula ensures safe use in sensitive environments.
Key Features of Everflex Fire-fill Fire Rated & Acoustic Joint Sealant
- Up to 4 hours fire resistance for joints up to 50mm wide
- Acoustic-rated for noise reduction in compliant systems
- Flexible joint movement capability of ±25%
- Non-toxic, low odour, and asbestos-free for safe handling
- No mixing required, water clean-up, and easy application
- Adheres to damp surfaces without primer
Technical Overview
- Chemical Properties: Acrylic Urethane Paste with Intumescent Expansion
- Application Temperature Range: +5°C to +35°C (41°F to 95°F)
- Service Temperature: -20°C to +90°C (-4°F to 194°F)
- Elongation at Break: 290% to 340%
- Shore A Hardness: 30 ± 5
- VOC Content: 31 g/L (Low VOC per Californian Rule 1168)
Trade Professional Information
- Required Tools: Caulking gun, Adhefoam backer rod, bond breaker tape, tooling spatula
- Trade-Specific Tips: Apply to clean or slightly damp surfaces, tool to a smooth finish before skin formation, avoid rain exposure for 24 hours
- Common Issues and Solutions: For shrinkage, ensure groove is completely filled; avoid applying to wet or ponded areas
Storage and Shelf Life
- Storage Requirements: Store in cool, dry conditions between 5°C and 32°C
- Shelf Life Information: 12 months in unopened packaging
- Temperature Considerations: Protect from freezing and excessive heat
Certifications
- AS 1530 Pt 4 2014 Sections 2, 4, 10 Compliant
- BS476 Part 20:1987 Fire Resistance Certified
- Greenstar Rated per Californian Air Quality Rule 1168
Frequently Asked Questions About Everflex Fire-fill Fire Rated & Acoustic Joint Sealant
Q: How should Fire-fill be applied to wall penetrations?
A: Ensure the joint is clean and insert Adhefoam backer rod or bond breaker tape. Apply Fire-fill using a caulking gun, then tool the surface for a smooth finish.
Q: How long does Fire-fill maintain its fire resistance?
A: When correctly applied, Fire-fill offers up to 4 hours of fire resistance in 170mm+ panels depending on joint configuration and depth.
Q: Is Fire-fill compatible with painted surfaces?
A: Yes, once cured, Fire-fill can be painted over for a seamless finish. Ensure paint compatibility by testing a small area first.
Q: What if the sealant shrinks after application?
A: Some shrinkage may occur; ensure the groove is fully filled to avoid gaps. Reapply if needed after initial curing.
Q: Is Fire-fill safe to use indoors without ventilation?
A: Yes, Fire-fill is low odour, non-toxic, and asbestos-free, making it safe for indoor use. However, ensure adequate airflow during application.
Use Everflex Fire-fill Fire Rated & Acoustic Joint Sealant for:
- Sealing around electrical conduits and cabling through walls or ceilings
- Joint sealing between concrete panels in fire-rated assemblies
- Acoustic sealing for walls in commercial and residential builds
- Gap filling around HVAC ducts and metal pipes in fire zones
Why Use Everflex Fire-fill Fire Rated & Acoustic Joint Sealant:
- Maintains fire barrier integrity up to 4 hours, improving safety compliance
- Reduces sound transmission for quieter interiors
- Quick and easy to apply with no mixing required
- Paintable and tools to a smooth, professional finish
How to apply Everflex Fire-fill Fire Rated & Acoustic Joint Sealant:
- Prepare surfaces by cleaning off dirt, grease, and dust. Slightly damp surfaces are acceptable.
- Insert Adhefoam backer rod or apply bond breaker tape to control sealant depth.
- Apply Fire-fill evenly using a caulking gun. Fill the joint completely to avoid shrinkage gaps.
- Tool the sealant to a smooth finish before skin formation (within 15 minutes).
- Allow to cure. Avoid water exposure for 24 hours post-application.
Everflex Fire-fill Fire Rated & Acoustic Joint Sealant limitations:
- Do not apply when rain is expected within 24 hours
- Not suitable for constantly wet or ponded areas
- Do not use on surfaces that are fully wet or submerged
- Joint movement should not exceed ±25% to maintain integrity
Safety precautions when using Everflex Fire-fill Fire Rated & Acoustic Joint Sealant:
- Personal Protective Equipment: Wear gloves and eye protection during use
- Ventilation: Use in well-ventilated areas, especially in enclosed spaces
- Handling: Avoid prolonged skin contact; wash with water if contact occurs
- Dispose of waste sealant in accordance with local regulations
Everflex Fire-fill Fire Rated & Acoustic Joint Sealant can be used on the following substrates:
- Concrete – ensure surface is clean, dry or slightly damp
- Metal – suitable for use around pipes and conduits
- Plasterboard – ideal for wall penetrations and acoustic sealing
- Cable Coverings – adheres well to various cable sheath materials
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