Situated in the serene and prestigious suburb of Killara on Sydney’s Upper North Shore, the multi-residential development at 4-8 Marian Street represents modern luxury apartment design. As a multi-unit Class 2 residential building, the project required robust, high-performance fenestration capable of balancing acoustic insulation, thermal energy compliance, and weather tightness under Australia’s National Construction Code (NCC).

To fulfill these architectural requirements and compliance standards, Meichen Windows & Doors was selected to manufacture and supply a custom-engineered overseas glazing system. The scope features the ACG100 Thermally Broken Commercial System, encompassing 100 mm awning windows, ACG100/150 sliding doors, and heavy-duty hinged doors. Built with full 100 mm commercial framing, flush drains sub-sill technology, and high-performance double glazing, the system delivers superior living comfort for apartment residents.

Project Specifications at a Glance

• Project Address: 4-8 Marian Street, Killara, Sydney, New South Wales, Australia

• Project Type: Apartment / Class 2 Multi-Residential Building

• Glazing & Systems Supplier: Meichen Windows & Doors

• System Architecture: Custom-Made Overseas System (ACG100 System)

• Primary Systems Supplied: ACG100 Awning Windows, ACG100/150 Sliding Doors, ACG100 Hinged Doors

• Framing Envelope: Full 100 mm Heavy-Duty Commercial Aluminium Framing

• Thermal Profile Construction: Thermally Broken Aluminium Extrusions

• Glazing Specification: High-Performance Insulated Double Glazing

• Specialized Features: Integrated Flush Drains, Barrier-Free Sill Architecture

• Compliance Framework: AS 2047, AS 1288, AS 1170, and NCC Class 2 Energy & Wind Resistance Standards

System Architecture & Engineering Highlights

4-8 MARIAN ST KILLARA — FENESTRATION SYSTEM MATRIX

• Primary Sub-Frame: ACG100 Heavy-Duty Commercial System Series
• Structural Profile Depth: Full 100 mm Commercial Extrusion Profile
• Thermal Envelope: High-Density Polyamide Thermally Broken Barrier
• Threshold Architecture: Integrated Flush Drains Barrier-Free Sub-Sill
• Operable Configuration: Awning Windows, Sliding Doors & Hinged Doors

1. ACG100 Thermally Broken Commercial Framing

Residential builds on Sydney’s Upper North Shore demand exceptional indoor thermal regulation to manage cold winters and hot summers while meeting strict BASIX and NCC Section J energy targets.

• High-Density Thermal Barrier: High-performance structural polyamide (PA66) thermal breaks isolate the external aluminum surface from internal rooms, preventing thermal conductivity, reducing HVAC electricity loads, and eliminating internal condensation risks.

• Full 100 mm Structural Rigidity: Featuring a full 100 mm profile depth, the ACG100 frame provides the necessary moment of inertia to resist high wind suction pressures while satisfying deflection limits dictated under AS 2047.

2. Comprehensive Operable System Integration

The residential units incorporate a complete family of custom-engineered opening systems tailored for modern indoor-outdoor apartment living:

• ACG100 Awning Windows: Provide safe, weatherproof background ventilation. Continuous perimeter EPDM rubber gaskets secure sashes tightly against frame jambs when locked.

• ACG100/150 Sliding Doors: Heavy-duty sliding mechanisms paired with smooth tandem stainless steel rollers accommodate large double-glazed sashes, allowing residents to operate wide balcony door spans effortlessly.

• ACG100 Commercial Hinged Doors: Robust entrance and terrace access doors fitted with multi-point perimeter locks for enhanced security and weather sealing.

3. Concealed Flush Drains & Double Glazed Acoustic Shielding

Creating a seamless step-down transition between indoor timber floors and external apartment balconies is a signature requirement in high-end Sydney multi-family architecture.

• Flush Drains Sub-Sill Architecture: The integrated sub-sill drain system allows for flat threshold installations without risking water ingress. Driving rain is captured and rapidly evacuated through internal channels during heavy storm events.

• Double Glazed Insulating Units (IGU): High-mass double glazing insulates interiors thermally while dampening ambient suburb traffic noise, maintaining peaceful acoustic environments inside every residence.

Compliance and Engineering Accreditation

As a Class 2 residential development in Sydney, the 4-8 Marian Street project required comprehensive compliance documentation for council sign-offs:

AGWA Corporate Membership: Meichen is an active member of the Australian Glass and Window Association (AGWA).

In-House AGWA/AFTI Certified Engineers: Oversighted by engineers holding verified competencies under AS 2047 (Windows & External Glazed Doors), AS 1288 (Glass Selection & Installation), and NCC building regulations.

Audited Quality Assurance: Backed by independent testing schedules under the CSi PAS-Mark and JAS-ANZ accreditation frameworks, streamlining building consent sign-offs.

Why Developers & Tier-1 Builders Partner with Meichen

1. Custom Commercial Engineering: Expertise in extruding custom thermally broken systems (such as the ACG100 and ACG150 series) tailored to exact project specifications.

2. Barrier-Free Architectural Detailing: Mastery in combining flush threshold drainage with heavy-duty commercial profiles for luxury Class 2 builds.

3. End-to-End B2B Support: Providing full shop drawings, structural wind load calculations, export protective packaging, and complete compliance documentation across Australia and New Zealand.