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Topglass FR50 & FR60

The Topglass Fire Retardant (FR) range is designed and supplied as fire and smoke retardant natural lighting and cladding solutions for use in commercial and industrial buildings.

Alsynite offer different grades of Fire Retardant translucent sheeting and cladding: Topglass FR50 (NZBC Group 3); and Topglass FR60 (NZBC Group 2).

Key Features
  • Topglass FR50 is glass reinforced polyester fire retardant sheeting that has been specifically formulated using fire retardant materials for use in commercial building applications and educational institutions. 
  • Topglass FR50 is glass reinforced polyester fire retardant sheeting that can be considered into building designs that specifically require reduced ignitability, flame propagation and heat and smoke release over conventional resin systems.
Plastic Roofing
Scope of Use


  • Schools and educational institutions
  • Public assembly areas
  • Combustible areas with high fire risk 
  • Where egress from a building in the event of fire may be restrictive
Statement of Building Code Compliance
  • Topglass/TopcladTM FR50 has been extensively tested using the cone calorimeter ISO 5660 and AS/NZS 3837 test method and also the full scale ISO 9705 room test. This extensive testing utilises a gas burner exposing the sheeting to 100kw for 10 minutes, and then 300kw for a further 10 minutes until flashover is reached.
  • Topglass FR50 achieves a Building Code (NZBC) group number 3 in both these tests
  • Topglass FR50 has also recently been tested to BS 476
  • Topglass/TopcladTMFR60 This grade has been cone calorimeter tested to ISO 5660 and AS/NZS 3837 and achieves a Building Code (NZBC) group number 2 rating
Test Results
Test Results
Installation Details (link to page on supplier website)
Topglass Fire Retardant Sheeting
Test Results
Test Results

Alsynite has been manufacturing and distributing superior fibreglass and polycarbonate, translucent and clear, roofing products since 1996.

Product Enquiries

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