Everflex Fire-fill Fire Rated & Acoustic Sealant

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Price Per Unit: $9.92

Price Per Box: $8.93

Everflex Fire-fill is a one-part, intumescent fire and acoustic sealant. It's designed for sealing gaps around pipes, cables and ducts. This easy-to-use sealant is water-based, low odour, non-toxic, and paintable.
Vendor: Adheseal
Availability: In Stock

Physical Properties

Type of product: Acrylic urethane paste
Curing system: Evaporation of water
Density (specific gravity): 1.5
Intumescent expansion: Yes
Elongation at break: 290% to 340%
Application temperature: +5°c to +35°c
Service temperature: -20°c to 90°c
Shore a hardness: 30 +/- 5
Voc: 31gm/lt (californian south coast air quality management rule 1168)
Shelf life: 12 months in original packaging
Tack free @25°c: 30 min
Working time: 15 min
Movement capability: + or - 25%
Colour: Grey
Packaging: 600ml sausages, 10 litre buckets
Fire resistance: Up to 4 hr. fire rating in 170mm or greater panel
Standards met: As1530,4 –2014 section 2,4,and 10, bs476: part 20 : 1987, as4072.1-2005

Shipping & Delivery

$15.95 shipping on all orders nationwide for most products

Everflex Fire-fill Fire Rated & Acoustic Sealant

Vendor: Adheseal

Everflex Fire-fill Fire Rated & Acoustic Sealant


Vendor: Adheseal

Everflex Fire-fill Fire Rated & Acoustic Sealant

Colours: Grey
Packaging Type: Single Buy

Everflex Fire-fill Fire Rated & Acoustic Joint Sealant

Everflex Fire-fill is a high-performance, one-part, waterborne acrylic co-polymer sealant with intumescent properties. This fire-rated sealant is designed for sealing gaps and penetrations in walls, floors, and ceilings, providing up to 4 hours of fire resistance. It also offers excellent acoustic properties, making it a versatile solution for both fire safety and noise reduction.

Key Features

  • Fire rated up to 4 hours (depending on joint configuration and panel thickness)
  • Acoustic rated
  • One-part, waterborne formula
  • Gun grade for easy application
  • Intumescent properties for fire protection
  • Tough and flexible with good UV resistance
  • Paintable
  • Water clean-up
  • Low odour and non-toxic
  • Contains no isocyanates or asbestos
  • Greenstar rated per Californian Bureau of Air Quality Management Rule 1168


  • Gap sealing around cables, metal pipes, conduits, busways, and ducts
  • Penetrations in walls, floors, and ceilings
  • Fire-rated and acoustic-rated applications


  • Provides a fire-resistant and acoustic seal for enhanced safety and comfort
  • Accommodates joint movement of up to ±25%
  • Easy application and tooling to a smooth finish
  • Can be painted over for aesthetic integration
  • Low odour and easy water clean-up
  • Environmentally friendly and safe for indoor use

Application Guide

  1. Ensure surfaces are clean and free from contaminants.
  2. Fill joints to the required depth with Adhefoam backer rod or bond breaker tape.
  3. Apply sealant using a caulking gun, ensuring complete joint filling.


  • Do not apply if rain exposure is likely within 24 hours.
  • Not suitable for areas with water ponding.

Suitable Substrates

  • Metal
  • Concrete
  • Plasterboard
  • Cable coverings

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