Aluminium Casement Windows, Custom Built for Australian Builds
Australian builds need aluminium casement windows that open wide enough to actually ventilate a room, seal tight against driving rain, and clear BASIX without a glazing rework at the certifier stage. We manufacture custom casement aluminium windows for builders, architects, and homeowners across Sydney, NSW, and Melbourne project work, sized to your openings, built to your BASIX or NCC energy targets, and ready for site delivery in six to eight weeks.
Why Builders Specify Outward-Opening Aluminium Windows
Outward-opening aluminium windows do two things no slider or double-hung can match. The sash swings to 90 degrees, so the full glazed area becomes airflow, which is why architects keep specifying casements above kitchen benches, in bedrooms, and across stairwell elevations where crossflow does the heavy lifting. When the handle turns, the cam pulls the sash hard against a continuous perimeter gasket, which is why casements consistently post the strongest air infiltration and water penetration numbers across the AS 2047 test suite.
That mechanical advantage shapes the design conversation, too. A modern casement window design built around slim-profile framing and concealed friction stays gives you wider glass, cleaner sightlines, and a façade that reads as architectural rather than ‘residential catalogue’. Combine that with the corrosion resistance aluminium has over steel or timber in coastal exposure, and the case for casements gets short of the way to obvious.
What We Supply in the Casement Range
The full casement range, sized and finished to project specifications.
Custom Casement Aluminium Windows
Single sash, double sash, and multi-light configurations built to your opening dimensions. Left- or right-hinging, fixed lights paired with operable sashes, and combination assemblies that match casement windows into awning, fixed, or louvre units within the same frame. Powdercoat finishes across the full architectural palette, including coastal-grade options for sites within five kilometres of the ocean.
Modern Casement Window Design
Slim-profile framing with concealed friction stays for projects where the architect has specified the cleanest possible sightline. Frame widths from 55 mm in the commercial series, matching profile depths across casement, awning, and fixed-light units so a façade running multiple window types reads as one system. Handle finishes in matte black, brushed stainless, polished chrome, white, or powdercoat-matched.
Double Glazed Casement Windows
Standard double-glazed casement windows in 4-12-4 IGU format; Low-E coated double glazing for most NSW BASIX certificates; and thermally broken double-glazed casement windows for Passive House, high-end residential, and commercial work above BCA Section J minimums. U-values and SHGC ratings are supplied with every quote so the certifier signs off on the first pass.
Built for Australian Construction Standards
AS 2047 Certified
Independent test reports for structural strength, air infiltration, and water penetration on every aluminium casement window series in the range. Documentation is packed with the order so your certifier checks the box and moves on.
BASIX and NCC Compliant
U-values and SHGC ratings on every glazing option, with thermally broken double-glazed casement windows available where the energy spec demands it. Lodgement-ready data sheets included with the quote.
Custom Manufactured
No off-the-shelf sizes forced into non-standard openings. Every frame is cut to your measurements, every reveal is sized for your wall depth, and every sash is hinged in the direction the floor plan needs.
Six to Eight Week Lead Time
Confirmed delivery date is issued at order, not a moving window that drifts as the build progresses. Sydney metro direct delivery, NSW regional freight-included casement windows in Melbourne and interstate quoted with freight separately.
Frequently Asked Questions
Standard friction stays hold the sash at any angle up to roughly 90 degrees, which is the widest practical opening of any window style. Restrictor stays cap the opening at 125 mm for code-compliant fall prevention on openings above floor level four, releasable with a tool for cleaning access and re-engageable afterwards. Specify the requirement at the quote stage so the correct stay is fitted at manufacture, not retro-installed on site.
Frame width and hardware visibility do most of the work. Traditional casements run 75 to 85 mm visible frames with surface-mounted stays you can see when the window is open. A modern casement window design pulls the frame down to 55 to 65 mm in the commercial series and uses concealed friction stays that disappear into the frame when the sash is closed. The hardware finish, matte black on white frames, is the dominant contemporary look that completes the picture.
Every casement we ship is a custom casement aluminium window manufactured against your opening schedule. No stock sizes, no off-the-shelf product pulled from a warehouse. You specify opening dimensions, hinge side, glazing tier, frame finish, and hardware finish; we manufacture and deliver. Combination assemblies, casements mulled with fixed lights, awnings, or louvres inside a single frame, are the bulk of what comes out of the factory.
For any new build or major renovation that needs to clear a BASIX or Victorian energy certificate, double-glazed casement windows are usually the path of least resistance. They are also worth specifying on western and northern elevations, where afternoon heat load drives indoor temperature, and on roads with traffic noise above 60 decibels at the boundary, where the IGU air gap also dampens external sound.
Yes, on a project-by-project basis. The factory is in Caringbah in the Sutherland Shire; Sydney metro is direct delivery, and casement window work in Melbourne is quoted with freight as a separate line on the same six to eight week lead time. Builders running portfolios across both states are welcome to send a combined opening schedule, and we will price the Sydney and Melbourne legs together.
Get a Quote for Your Casement Window Project
Send your opening schedule, BASIX or NCC energy spec, and any architectural drawings. We will quote against the project, confirm the lead time in writing, and stay reachable from order through delivery – no shifting answers, no missed delivery dates.
