Where to Buy Deceuninck Windows in Australia & Who Installs Them
Belgian-engineered uPVC profiles, fabricated locally in Melbourne. A homeowner's guide to buying Deceuninck double glazed windows and finding a trusted installer for performance that lasts.
Deceuninck is one of the world's top three manufacturers of uPVC window and door profiles. Founded in 1937 in Hooglede-Gits, Belgium, the company operates in more than 90 countries and supplies over 4,000 fabricators globally. In Australia, European-engineered profiles are imported through Deceuninck's Coolaroo, Victoria headquarters and fabricated locally by authorised specialist manufacturers — including Windows Republic in Cheltenham, Melbourne.
- Sold only through authorised fabricators, not direct-to-consumer
- Belgian-made profiles, locally fabricated in Melbourne
- Fully installed from $1,800 per window in Victoria
- Compliance with AS 2047, AS 1288 and NCC 2022 is essential
- Legend Art is the newest flush sash uPVC system
- Up to 15-year manufacturer warranty on coloured profiles
Where to Buy Deceuninck Windows in Australia
Deceuninck profiles aren't sold direct-to-consumer. They're supplied exclusively to authorised fabricators who manufacture finished windows and doors to order. You have three routes:
Local fabricators cut, weld and assemble profiles into custom units. The most common path for Melbourne homeowners.
Inspect hardware, operating mechanisms, acoustic glass samples and colour finishes before ordering.
Measurement, fabrication and installation in one hand. Ensures compliance with AS 2047, AS 1288 and NCC 2022.
Recommended Deceuninck Installers in Melbourne
The finished window is only as good as the fabricator who builds it. Poor welding or installation negates the thermal and acoustic benefits of even premium Deceuninck profiles. Prioritise providers who:
- Manufacture in-house, not outsourced
- Have documented European uPVC experience
- Offer double and triple glazing options
- Know AS 2047, AS 1288 & NCC 2022
- Provide written frame & hardware warranties
- Have verifiable Melbourne installations
Why Choose Deceuninck for a Melbourne Home
Melbourne's climate — hot summers, cold winters, and urban noise — demands windows that perform thermally and acoustically. Deceuninck addresses this with four engineering advantages:
Multi-chamber profiles (5 chambers, 70mm on Legend Art) reduce heat loss by up to 70% vs aluminium.
Airtight seals with acoustic laminated glass reduce external noise by up to 40 dB.
Proprietary PVC formulation resists warping, yellowing and fading under Australian sun.
No painting or sealing. Soapy water keeps the profile clean for decades of use.
The Legend Art Flush System
The Deceuninck Legend Art is the newest hinged system and a significant design evolution. Traditional uPVC windows have visibly protruding sashes. Legend Art limits sash projection to approximately 9mm past the frame, creating an almost flush exterior similar to premium aluminium systems — without compromising thermal performance.
- Chambers
- 5 chambers
- Sealing
- Twin EPDM weather seals
- Frame width
- 70mm in-frame
- Sash projection
- ~9mm flush
- Glazing
- Double & triple, up to 48mm
- Uf value
- from 1.1 W/m²K
- Recyclability
- 100%
Deceuninck uPVC Window Types Available
Deceuninck's Australian range covers every major configuration used in Melbourne homes:
| Window Type | Best For | Key Feature |
|---|---|---|
| Tilt-and-Turn | Apartments, modern builds | Dual opening — tilt or full swing |
| Casement | Most Melbourne homes | Excellent seal compression |
| Awning | Bathrooms, rainy climates | Ventilation during rain |
| Sliding & Lift-and-Slide | Large openings, patios | Openings up to 5.8m wide |
| Fixed / Picture | Views & natural light | Non-opening, maximum glass area |
| Double-Hung Sash | Heritage & period homes | Vertical sliders for restorations |
| Acoustic Configurations | Noisy suburbs | Up to 40 dB reduction |
Deceuninck Window Prices in Melbourne (2026)
Fully installed pricing aligned with current Melbourne market rates. All figures include professional removal, fitting, sealing and site cleanup.
| Window Type | Typical Size | Fully Installed |
|---|---|---|
| Fixed (non-opening) | Various | $1,800–$2,400 |
| Awning | 900×1000mm | $2,200–$2,800 |
| Casement | 900×1000mm | $2,300–$3,000 |
| Sliding | 1800×1500mm | $2,200–$2,900 |
| Tilt & Turn | 1800×1500mm | $2,600–$3,400 |
| Sliding Door | 1800×2100mm | $3,500–$4,500 |
| Scope | Pricing |
|---|---|
| Per square metre (medium/large units ≥1.5m²) | $1,200–$1,800 per m² |
| Typical whole-home replacement | $15,000–$40,000+ |
Methodology: Pricing based on Windows Republic's 2025–2026 Melbourne installation data across 100+ completed residential projects. Smaller windows carry higher per-m² costs due to fixed labour expenses. Figures include supply, removal, fitting, sealing and site cleanup. For detailed breakdowns by home size, see the Melbourne double glazed windows cost guide.
What Homeowners Report After Upgrading
- 20–40% heating and cooling cost reduction
- Up to 40 dB noise reduction with acoustic glass
- Near-elimination of internal condensation
- 7-star NatHERS compliance for new builds
- Property value increase (70–80% ROI typical)
- Minimal ongoing maintenance
Frequently Asked Questions
Where is Deceuninck made?
Deceuninck profiles are manufactured in Belgium, headquartered in Hooglede-Gits, West Flanders. In Australia they're imported and fabricated locally by authorised manufacturers such as Windows Republic in Melbourne.
Are Deceuninck windows good quality?
Yes. Deceuninck sits in the world's top three uPVC extruders with A++ energy ratings, multi-chamber thermal performance and up to 15-year warranties on coloured profiles. Quality of the finished window, however, depends heavily on fabrication and installation.
How long do Deceuninck windows last?
The profiles are engineered to last 30+ years with minimal maintenance. Formulations are UV-stabilised to resist yellowing, warping and cracking under Australian sun exposure.
Are they suitable for the Australian climate?
Yes. Profiles are UV-stable and formulated for extreme temperature variations. They perform in Melbourne's hot summers and cold winters, and meet Australian Standards AS 2047 and AS 1288.
Can they improve sound insulation?
Yes — especially combined with acoustic laminated glass (e.g. 6.38mm or 10.38mm lam). Airtight Deceuninck seals plus thicker laminated glass can reduce external noise by up to 40 dB.
Are they low maintenance?
Yes. uPVC requires no painting, sanding or sealing. A wipe-down with soapy water every few months is sufficient. The profiles resist corrosion, rot and insect damage.
Can I buy Deceuninck windows directly from the manufacturer?
No. Deceuninck supplies profiles only to authorised fabricators. Homeowners purchase finished windows through local fabricator-installers like Windows Republic in Melbourne, who cut, weld and install the finished product.
How much do Deceuninck windows cost in Melbourne?
Fully installed, expect $1,800–$2,400 for fixed units, $2,200–$3,000 for standard awning or casement, $2,600–$3,400 for tilt-and-turn, and $3,500–$4,500 for sliding doors. Whole-home replacements typically fall between $15,000 and $40,000+.
What is Deceuninck Legend Art?
Legend Art is Deceuninck's newest flush hinged window system — 5-chamber profiles at 70mm in-frame width with ~9mm sash projection, creating an almost flush exterior similar to premium aluminium while retaining uPVC thermal performance.
Why Trust This Guide
Windows Republic has specialised in Deceuninck uPVC fabrication and installation across Victoria since 2015. Every statistic, spec and price on this page reflects hands-on experience from our own factory and install data — not secondary marketing material.
Related Reading
- Deceuninck Australia — product specifications and authorised fabricator network
- Deceuninck corporate profile — company history, global operations
- National Construction Code (NCC 2022) — Australian energy efficiency requirements
- Standards Australia AS 2047 & AS 1288 — windows and glazing in buildings
- Windows Republic Melbourne installation data (2025–2026) — internal pricing and performance records
We fabricate Deceuninck uPVC double glazed windows locally in Cheltenham and install across Victoria. 10-year product warranty on every project.
