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Skyrail CG-DD and DD Series | Glass Balustrades

Altech Systems
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Double & Single Disk Glass Infill Balustrade System

The Skyrail CG-DD (Double Disc) and CG-SD (Single Disc) Series are premium glass balustrade and fencing systems, designed to provide uninterrupted views while delivering exceptional strength, safety, and durability for modern architectural applications.

The system is available in either;

  • Glass-only configuration, using Sentry-type laminated glass, or
  • Interlinking handrail configuration, using toughened safety glass

The Skyrail CG-DD and CG-SD Series are recommended for applications including glass pool fencing and low-rise residential internal and external installations. For high-rise and commercial applications, please contact us to discuss suitability for your project.

Engineered for versatility, the Skyrail CG-DD and CG-SD Series incorporate a range of innovative design features, including:

  • Component discs manufactured in New Zealand using advanced CNC processes, enabling project-specific solutions to suit a wide range of building configurations.
  • Aluminium disc options, providing excellent strength and durability, with the ability to be powder coated to any colour (stainless steel discs are also available).
  • CG-SD (Single Disc) is suitable where base fixing space is limited, such as thin concrete slabs or low nib upstands.
  • CG-SD disc sizes available from 75mm to 150mm, allowing the system to be tailored to specific design requirements.
  • CG-DD (Double Disc) available in sizes up to 150mm diameter, commonly used where base fixing conditions are compromised

The Skyrail CG-DD and CG-SD systems feature a clean base profile with discreet fixings, allowing rainwater, leaves, and debris to pass through freely without obstruction. This practical design enables seamless integration across a wide range of applications, including balconies, staircases, and pool fencing.

All Altech balustrade systems are supplied with a project-specific PS1

Details
Scope of use

Skyrail CG-DD and CG-SD Series is suitable for a wide range of residential and commercial applications, including:

  • Decks, balconies, ramps, stairs, and pool fencing
  • Screens in conjunction with balustrading
  • Occupancies where people congregate
  • Residential occupancy

The system is designed to meet the requirements of the following occupancy types in as defined in NZS 1170:

  • A (Domestic and residential)
  • A Other (External balconies)
  • B, E (Offices and workspaces)
  • C3 (Areas without obstacles)

Skyrail CG-DD and CG-SD Series has been engineered to fix to a range of substrates, including timber, concrete, and steel substrates, and is suitable for;

  • All wind zones including very high and extra high as defined by NZS 3604
  • Coastal, geothermal, and industrial environments
Features
  • ·Discrete base fixing system.
  • Available in 13.52, 15.52mm and 17.52 sentry glass with no top rail
  • Available in 12 and 15mm toughened glass (requires a top rail for balustrades)
  • Designed for all wind zones up to EH (Extra high)
  • Designed for live loads in residential and equivalent commercial occupancies (per NZS1170, Table 3.3).
  • Compatible with both waterproof and floating deck systems.
  • Engineered for fixing to timber, concrete, and steel substrates.
  • Inter-operability with other Altech balustrade products.
  • Available in a wide range of durable powder coat or anodised finish.
  • Design solutions available for cavity-clad building structures.
  • Warranty: 5-year on materials (excluding surface coating), 2-year on workmanship, Applicator warranty on powder-coating (eg 10-25 years for Duratec; refer to applicator for other coating warranties).
Technical Downloads

Design confidence starts here.

Unlock the fine details. Whether you’re specifying a balustrade, louvre, screen or canopy, our technical download portal gives you instant access to the drawings and specs you need, so good design never compromises on clarity.

Select a product family below to browse and download technical documents.

  • Browse by category, preview with a click, and download individual files or full ZIP sets in one step.
  • .DWG files are packaged inside ZIPs for easy access.
  • ForSI documentation or tailored support, reach out to our team.

Find all our PDF and DWF drawings and technical specification downloads here.

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About the
Seller

At Altech, we specialise in the design, engineering, manufacture and installation of architectural aluminium systems. This is through our engineering precision, creative design, expert manufacturing, and seamless installation. We offer a fully integrated service that fits effortlessly into your project, from concept to completion.

We specialise in optimising custom aluminium designs, helping reduce material use and cost without ever compromising structural integrity. Whether you’re an architect, developer or main contractor , we collaborate closely to ensure your vision meets the highest standards of performance, compliance, and aesthetics. Every aluminium solution we deliver is designed to meet New Zealand’s strict safety and regulatory requirements and is delivered on time and within budget.

All aluminium extrusions are engineered and fabricated to exceptional standards right here in New Zealand. Our materials comply with ISO certifications, ensuring our products achieve top-tier ratings for durability and safety, giving clients confidence, long-term value, and peace of mind.

Our philosophy is simple: to deliver quality, innovation, and trust through every aluminium and glass solution we create. With internal quality systems and a passionate team of designers and engineers, many of whom have contributed to landmark builds for over 35 years, Altech brings experience you can build on.

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