LITEFLAM's patents showcases leadership in R&D glass technology, offering unmatched protection and clarity.
North American Patents
Fire Rating: 60 minutes+
Fire Testing Standards: ASTM E 119, UL 263, NFPA 251, CAN/UL-S101
Impact Safety Rating: CPSC 16 CFR 1201 (Categories I & II)
Slip Resistance Testing: ASTM C1028, UL 410
Design / performance of supported laminated glass ASTM E 2751
LITEFLAM glass systems are rigorously tested to meet international safety and performance standards, ensuring reliability and peace of mind for all users.
provided by:
Intertek - Testing, Inspection, and Certification Services
ULC - Underwriter Laboratories
SwRI - South West Research Institute Laboratories
Provides protection for up to 120 minutes, blocking flame, smoke, radiant heat.
Built to handle heavy foot traffic and impacts, ensuring durability and safety in busy areas.
Blocks radiant heat transfer, protecting structures and occupants.
Optional glass layer that absorbs damage, extending lifespan and lowering maintenance costs by allowing partial replacement.
Supports significant weight for high-traffic or heavy-load areas, ensuring structural integrity. Standard live-load 100lb/sqft.
Optional slip-resistant surface, enhancing safety by reducing the risks of accidents in wet or slippery conditions, ideal for pedestrian safety.
The XT60 variant of LITEFLAM provides a fire rating of 60 minutes, making it an excellent choice for applications where fire protection is required without compromising on design or functionality. It combines the benefits of daylighting with robust fire resistance, ensuring that flames, smoke, radiant heat are blocked for up to an hour, allowing safe evacuation and initial fire response.
Nominal Glass Thickness (in.; mm): 2- 3/4” (70 mm)
Thickness Tolerance (in.;mm): +1/8” to -1/16” (+3mm to -1.5mm)
Weight (lbs./sqft.; kg/sqm ): 26 (11.7)
Minimum Live loading 100 PSF: Optional higher loading available
STC: 52.0 dB
With a fire rating of 90 minutes, made for environments that demand extended fire resistance. The XT90 excels in blocking flames, smoke, and radiant heat for 90 minutes, providing additional time for evacuation and emergency response. Its load-bearing capacity supports heavier traffic, and the inclusion of a sacrificial sheet ensures long-term durability by allowing easy replacement of damaged top layers.
Nominal Glass Thickness (in.; mm): 3-7/16” (87 mm)
Thickness Tolerance (in.;mm): +1/8” to -1/16” (+3mm to -1.5mm)
Weight (lbs./ft. ;kg/m ): 32 (14.5)
Minimum Live loading 100 PSF: Optional higher loading available
STC: 56.0 dB
The XT120 offers the highest fire rating of 120 minutes, designed for maximum fire protection. Capable of blocking flames, smoke, and radiant hear for 120 minutes, the XT120 provides an extended safety window, meeting the strictest fire codes. Its robust construction includes enhanced impact safety and heat barrier properties, ensuring it performs under extreme conditions, while the non-slip surface and load-bearing design support heavy use.
Nominal Glass Thickness (in.; mm): 5-7/16” (138 mm)
Thickness Tolerance (in.;mm): +1/8”to -1/16” (+3 mm to -1.5 mm)
Weight (lbs./sqft.; kg/sqm ): 44 (19.96)
Minimum Live loading 100 PSF: Optional higher loading available
STC: 61.0 dB

LITEFLAM is Greenlite Glass Systems’ patented fire-rated glass system, engineered primarily as a walkable skylight and glass floor solution. It is unique because it is the first labeled and listed exterior fire-rated walkable skylight system in North America, allowing architects to use glass where traditional fire safety codes typically demanded opaque materials like concrete or steel. LITEFLAM merges high structural load-bearing capabilities with certified fire resistance.
LITEFLAM is classified as Fire Resistive glazing, meaning it is engineered to act as a barrier that actively impedes the transfer of flames, smoke, and radiant heat. This comprehensive compartmentalization ensures critical life safety and provides time for evacuation. LITEFLAM systems are available with certified test-listed fire ratings from 1 hour up to 120 minutes (2 hours), depending on the variant chosen (XT60, XT90, or XT120).
Yes, LITEFLAM is engineered for rigorous structural demands and durability. The system has a standard minimum live loading capacity of 100 pounds per square foot (PSF) and can be engineered to take on even higher loads if required by the project specifications. Furthermore, LITEFLAM is designed to be sturdy against inclement weather, including snow loads, hail, and high winds, and is proven to be water- and moisture-resistant.
LITEFLAM promotes sustainability and energy savings primarily through maximized daylighting, reducing reliance on artificial light sources deep within the building interior. For thermal performance, the systems feature sealed Insulated Glass Unit (IGU) assemblies, which can be configured with Low-E and solar control coatings to regulate indoor temperatures and prevent heat loss, contributing to lower operational costs. Aesthetically, LITEFLAM maintains a slim profile and offers design flexibility, including optional customization with decorative color frits and sandblasted glass without compromising its fire rating.
