Prestige Window Shrouds.
Trendline Window Shrouds & Custom Awning for Prestige Sylvania Waters Property, Sydney
- Title:
- Trendline Window Shrouds & Custom Awning for a Prestige Waterfront Build in Sylvania Waters, Sydney
- Manufacturers and Supplier:
- Alumac Architectural Metal Building Products
- Category:
- Residential/
- New Builds
- Completed:
- 2026
- Building style:
- Modern
- Photographers:
- Alumac Architectural Metal...

New Prestige Waterfront Build on Gwawley Creek
Sylvania Waters sits on the Georges River system in Sydney’s south, a suburb of wide-fronted waterfront homes, high architectural expectations, and owners who care deeply about the quality of what goes on their facade. When this substantial alterations and additions project at Castlereagh Crescent was put to Alumac, the bar was set accordingly.
The construction was managed by Corrion Prestige Developments, a Caringbah-based prestige builder. The scope included custom aluminium window shrouds, a large-format front door awning, and a shouldered stainless steel heel-guard driveway drain, all fabricated by Alumac at our Sydney factory.
The finished building is a two-storey contemporary residence, geometric massing, brick cladding in two tones, large glazed openings, and the kind of shadow lines and depth that come from considered facade detail. The Alumac products are a core part of what makes that facade work.
The Products: A Full Facade Scope
Trendline Window Shrouds
The primary window shroud elements across this project are fabricated in Alumac’s Trendline range, 3mm aluminium plate with a slimline expressed edge profile and countersunk holes, chemical pre-treated and top-coated for long-term durability.
The scope includes a mix of configurations across the first floor facade:
Full four-sided window shrouds, two of the major window openings are specified as full surround window shrouds, wrapping all four sides of the window frame. This treatment creates the strong, framed architectural effect visible on the facade, the glazing sits inside the shroud like a recessed element, adding significant depth and shadow to what would otherwise be a flat facade plane. One of these shrouds is a substantial first floor study window: 1095mm wide by 2700mm high with a face depth tapering from 245mm to 150mm. The second is a larger opening at 2000mm wide by 2250mm high, tapering from 1100mm to 500mm deep.
Head-only window shrouds and awnings, additional Trendline elements are specified across the first floor and rear elevations as head-only treatments, providing sun mitigation and weather protection across key glazed openings. The rear elevation features a continuous 5200mm-wide awning over two adjacent windows, tapering from 980mm to 500mm deep, a significant run that required the Trendline system’s capacity to manufacture panels up to 4m in length and join them seamlessly on site.
All Trendline assemblies are fixed together using machine-pressed, flush stainless steel studs that disappear beneath the powder coat. The expressed edge profile and countersunk holes are a deliberate architectural detail, clean and resolved, consistent with the overall design intent of the Architect.
Trendline Plus+ Front Entry Awning
The standout element of this project is the front entry awning , a large-format Trendline Plus+ piece spanning 3800mm wide, tapering from 1900mm to 1200mm deep, mounted on custom spindles above the main entry door.
At nearly 4 metres wide and projecting up to 1900mm from the wall, this is a significant architectural feature. The Trendline Plus+ range was the right specification for an element of this scale and prominence: manufactured from 3mm marine-grade aluminium with welded stiffening gussets for added structural integrity, and featuring concealed fixings throughout. There are no exposed fasteners on the external face, the finished soffit will present as a single, uninterrupted plane once the builder completes the soffit lining.
The custom mounting spindles are a bespoke detail, designed to suit the specific fixing substrate and provide the correct setout from the wall face. This kind of one-off engineering is exactly where custom fabrication adds value, a standard product simply wouldn’t accommodate the combination of span, projection, and mounting requirement.
Driveway Drain: Class B Heel Guard Strip Drain
The project also includes a custom stainless steel driveway drain at the entry, and it’s worth talking about why the drain choice matters on a project like this. A prestige driveway with a tiled/paved finish deserves a drain that matches the standard of everything around it. The specified drain is a Class B Heel Guard strip drain: a shouldered driveway drain rated for vehicular traffic, fabricated from stainless steel with a non-slip grate profile.
The shouldered design means the drain body sits flush within the surrounding surface, with no exposed edges or lips that can chip, shift, or collect debris over time. It handles the load of vehicle crossings without flex or movement, and the stainless finish holds up without staining or corroding, even with the salt air exposure that comes with a waterfront location. For driveways, the drain is often an afterthought. On a project of this calibre, it shouldn’t be. A Heel Guard Class B drain is the right specification where a standard residential grate simply isn’t to standard.
Why This Project Demonstrates What Alumac Does Best
This scope is a good example of the range of work that comes through the Alumac factory. It’s not a single repeating product across a multi-residential development, it’s a mix of shroud types, configurations, and bespoke details, all fabricated to architectural drawings and delivered to a prestige residential site.
The architect specified expressed edge plate aluminium with a slimline profile. The project manager needed precise dimensions, clean finishes, and delivery that didn’t hold up the programme. The result is a facade where the Alumac elements are doing exactly what good architectural metalwork should do, providing shade, weather protection, and visual definition without drawing attention to themselves as products. They belong to the building.
Working with Architects and Prestige Builders in Sydney
Alumac works regularly with architects and prestige residential builders across Sydney and NSW. Our Trendline and Trendline Plus+ ranges are well suited to high-specification residential projects where concealed fixing details, consistent finish quality, and bespoke fabrication capability matter.
All window shrouds are custom manufactured at our Taren Point factory, chemical pre-treated in-house, and powder-coated to your specification. All products carry a 10-year warranty.
If you’re an architect, builder, or developer working on a project that requires custom aluminium window shrouds or awnings, contact the Alumac team or call (02) 9525 2177 to discuss your requirements.
Project Details
Builder: Corrion Prestige Developments, Caringbah NSW Products supplied: Trendline Window Shrouds, Trendline Plus+ Entry Awning Finish: Chemical pre-treatment + top coat powder coat in premium Dulux Night Sky Satin Warranty: 10 years





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