Bostik Fireban One

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Price Per Unit: $17.90

Price Per Box: $16.11

Bostik Fireban® One is a one-part, fire-rated polyurethane sealant designed for construction joints. It offers up to 4 hours of fire resistance, acoustic properties, and excellent flexibility for dynamic joints. It is suitable for various substrates.
Vendor: Bostik
Availability: In Stock

Physical Properties

Colours: Limestone
Viscosity: Non-sag, smooth thixotropic paste
Cure method: Moisture curing
Chemical resistance: Dilute acids, alkalis and some solvents. intermittent contact with petroleum and diesel.
Fire test certification: Csiro, rilem, bomba malaysia, tuv sud psb singapore
Standards met: As 1530.4-2014, as 4072.1-2005, doc. 97/196 (m), astm c.920 type s, grade ns, class 25, use nt, g, a, m, & o, as1157-1972
Service temperature: -40°c to 70°c
Tack free time: 6-12 hours
Cure rate: 2mm/24 hours on porous substrates
Full cure: 7 days on porous substrates
Specific gravity: 1.45 g/ml
Shore a hardness: 30
Tensile strength: > 1.3 n/mm²
Elongation at break: > 900%
Total joint movement: ± 25%
Maximum joint width: Up to 50mm
Packaging: 600ml sausage/20 per carton
Voc content: 64g/litre

Shipping & Delivery

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Bostik Fireban One

Vendor: Bostik

Bostik Fireban One


Vendor: Bostik

Bostik Fireban One

Size: 600ml
Product Type: Single Buy

Bostik Fireban® One Fire Rated Intumescent Polyurethane Joint Sealant

Bostik Fireban® One is a premium, one-part, fire-rated intumescent polyurethane sealant designed for a wide range of construction applications. This low-modulus sealant offers excellent flexibility, durability, and weather resistance, making it ideal for sealing joints in fire-rated and acoustic-rated structures.

Key Features

  • Fire rated up to 4 hours
  • Acoustic rated
  • One-component, no mixing required
  • Low modulus 50% (± 25%) movement capability
  • Excellent durability and UV resistance
  • Paintable*
  • Non-staining and does not support fungal growth
  • Australian made


  • Insitu concrete floors and walls
  • Precast and tilt-up panels
  • Brickwork and blockwork
  • Rendered masonry
  • Plasterboard (fire-rated and/or acoustic-rated)
  • Fibre cement sheet (fire-rated and/or acoustic-rated)


  • Provides a fire-resistant and acoustic seal for enhanced safety and comfort
  • Accommodates movement and expansion in joints
  • Maintains flexibility and performance over time
  • Resists weathering, UV damage, and fungal growth
  • Paintable for aesthetic integration
  • Easy application with a sausage barrel gun

Application Guide

  1. Ensure surfaces are clean, dry, and free from contaminants.
  2. Prime all surfaces with recommended Bostik primer.
  3. Apply sealant using a sausage barrel gun, ensuring proper joint filling.
  4. Tool the sealant within the tack-free time for a smooth finish.


  • Not recommended for use in chlorinated water, on bitumen-containing materials, or in constant immersion in saltwater.
  • Not suitable for glazing applications, trafficable joints >10mm, or application below 5°C or above 35°C.
  • Avoid exposure to water and/or alcohol before complete curing.
  • Not for wet tooling techniques.
  • Not for joints less than 6mm in width and depth.

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