Large Glass Skylight - GXL

Name: Large Glass Skylight - GXL
Brand: Skyspan
Availability: InStock

Large Glass Skylight - GXL

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Flashing Colour Zincalume

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7-Year Warranty

Available For:

Supply Only or Supply & Install for all sizes ≤ 2000x5000mm

Supply & Install Only for all sizes > 2000x5000mm

Large Glass Skylight - GXL

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Product Brochure

The Skyspan GXL is a large-format architectural glass skylight designed to deliver expansive daylight with a clean, uninterrupted surface. Manufactured in Australia, it features a fully welded aluminium frame and high-performance laminated or double-glazed glass, making it suitable for premium residential and commercial applications.

The glazing is trafficable for cleaning and maintenance, meeting AS1288 requirements for overhead installations.

Thermal Break System

The GXL incorporates a thermally broken, self-draining frame system engineered to reduce thermal bridging and support Section J and NatHERS performance requirements.
An integrated condensation gutter and weep-hole drainage system manages moisture at the frame, improving durability and preventing internal water ingress.

Key Benefits

Thermal Break Frame — reduces heat transfer and helps maintain interior temperature stability.
Condensation Management — gutter and weep holes control moisture and protect internal finishes.
Energy Performance — improves thermal efficiency and reduces HVAC load in conditioned spaces.

Glazing Options

Tint Options

Custom tinting options and Ceramic Frit Patterns also available. Above images are for illustrative purposes only—actual tint colors may vary due to lighting and screen display.

Energy rating

Glazing	U-Value	SHGC
Centre of Glass Values:
Single Glazed (Clear)	3.6	0.63
Double Glazed (Clear)	1.3	0.27
Double Glazed (Grey Tint)	1.3	0.26
Double Glazed (White Translucent)	1.3	0.24
System Values:
Double Glazed (Clear)	2.7	0.25

On a project specific basis, higher performance energy ratings up to SHGC 0.18 are available for maximum width of 2,000mm & maximum length of 3,500mm

System Type	Large-format thermally broken architectural glass skylight
Frame Construction	Welded aluminium frame with integrated thermal break
Drainage System	Self-draining design with condensation gutter and 6 mm weep holes
Trafficable Use	Trafficable for cleaning and maintenance (AS1288 Section 6)
Roof Pitch Suitability	3° – 60° (5° minimum recommended for water runoff)
Flashing Material	0.75 mm Zincalume® (standard) or Stainless Steel / Colorbond® Ultra
Finish Options	Powder coated to any Colorbond®, Dulux or Interpon colour
BAL Rating	BAL-29 compliant (non-combustible aluminium, steel and glass)
Wind Region	Tested to Cyclone Region C3 (AS4285 Debris Impact Test)
Compliance Standards	AS 4285:2019 – Rooflights AS 1288:2021 – Glass in Buildings AS 3959:2018 – Bushfire Construction AS/NZS 1170 Series – Structural Design Actions
Warranty	7 Years (manufacturing defects)
Made In	Australia

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FAQs

Please read our FAQs page to find out more.

Is the GXL trafficable?

The GXL is trafficable for cleaning and maintenance purposes only, in accordance with AS1288:2021 Section 6, which requires the glass to support a 1.1 kN live load incidental to maintenance.

The GXL is not designed for foot traffic.
If foot traffic across glass is required, a Trafficable Glass Floor (TGF) must be specified as an engineered solution.

How does the thermally broken GXL differ from standard glass skylights?

The GXL is a patented thermally broken skylight system, incorporating:

- a thermal break between internal and external framing
- an integrated condensation gutter and weep system
- a self-draining design

This significantly reduces heat transfer and condensation risk compared to non-thermally broken skylights, particularly over conditioned internal spaces.

Is the GXL suitable for bushfire-prone areas and non-combustible roof requirements?

Yes. The GXL is manufactured from non-combustible materials, including aluminium, steel, and laminated glass, and provides a non-combustible external lining to the roof.

The GXL is BAL-29 compliant as standard (without an ember guard) where the roof pitch is 18° or greater.
For roof pitches below 18°, an ember guard is required to maintain BAL-29 compliance.
For BAL-12.5, no ember guard is required.

Is the GXL cyclone rated?

Yes. The GXL has been physically laboratory tested and has passed cyclonic wind and debris impact testing to Wind Region C3 under AS4285:2019.

Can external films or aftermarket tints be applied to GXL glass?

External films or aftermarket tints should not be applied to the glass.

Applying films after manufacture can cause thermal stress and will void the glass warranty.
If reduced solar gain or tinted appearance is required, this should be addressed through:

- factory-specified tinted glass
- tinted interlayers
- Low-E or higher-performance glazing options

These options are selected at specification stage, not applied after installation.