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InteriorInterior
Bostik Fireban One
Description

Bostik Fireban One is a fire rated intumescent, low modulus, one component, and Class A polyurethane sealant. When cured it will form a tough, flexible fire rated seal capable of cyclic expansion and compression movement of 50% (±25%) of the original installed joint width.

Bostik Fireban One is resistant to normal weathering conditions such as rain, sunlight, snow, sleet, ozone, atmospheric contamination and pollution. 

Key Features
  • Fire rated up to 4 hours
  • Acoustic rated
  • Retains its original properties even after years of weather and UV exposure
  • Resistant to weathering conditions
  • Excellent weatherability
  • Paintable
  • Non-staining
  • Does not support fungal growth
Scope of Use

Recommended Uses:

  • Interior surfaces
  • Exterior surfaces
  • Residential applications
  • Commercial applications
  • Heavy commercial applications

Suitable for:

  • Insitu concrete walls and floors
  • 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)
Limitations on Use
  • Maximum joint width up to 50mm

Not recommended for:

  • Use in chlorinated water such as swimming pools, spas etc.
  • Use on any material containing bitumen
  • Constant immersion in salt water
  • Use in glazing applications
  • Application to cement based substrates within 28 days of initial pour or set 
  • Use in trafficable joints greater than 10mm in width
  • Application at temperatures below 5°C or above 35°C
  • Exposure to water and/or alcohol before it has completely cured
  • Wet tooling techniques, such as soapy water
  • Application in less than 6mm in width and depth
Statement of Building Code Compliance

Bostik Fireban One, if designed, used, installed and maintained in accordance to the information provided by Bostik New Zealand, will contribute to or meet the following provisions of the NZBC:

  • Clause B2 DURABILITY: Performance B2.3.1 (b), 15 years and B2.3.1 (c), 5 years.
  • Clause C3 FIRE AFFECTING AREAS BEYOND THE FIRE SOURCE: Performance C3.4(a) and C3.7
  • Clause E2 EXTERNAL MOISTURE: Performance E2.3.2.
  • Clause E3 INTERNAL MOISTURE: Performance E3.3.3, E3.3.4, E3.3.5 and E3.3.6.
  • Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1.
  • Clause G6 AIRBORNE AND IMPACT SOUND: Performance G6.3.1
Other Performance Attributes
  • Fire rated up to 4 hours
  • Retains its original properties even after years of weather and UV exposure
  • Paintable
  • Non-staining
  • Does not support fungal growth
Documents
Product Technical Statement: Fireban One

v2

Technical Data Sheet: Fireban One

2026 v2

VOC Content Test Certificate: Fireban One
Safety Data Sheet: Fireban One

2023

Bostik Fireban One

Bostik NZ provides BRANZ Appraised sealants, adhesives and waterproofing systems for the construction and industrial markets.

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