Northstar Double Glazing — double glazed windows and doors, Melbourne
New build window package during construction

Quote to completion

The product is half of it. The installation is the rest.

Product quality and installation quality both matter. Northstar follows a clear process from the first conversation through to handover, with support available after installation whenever you need it.

Start to finish

Ten stages, nothing improvised.

  1. 01

    Initial contact & free home consultation

    We meet you at the home, show you the product range, and take the time to understand the project — the rooms, the openings, the noise, the orientation — before specifying the appropriate solution for each opening.

  2. 02

    Quote

    You receive a clear written quotation based on the agreed product and project requirements: every opening itemised, the glazing make-up, the frame colours inside and out, screens, hardware, the warranty and the scope of the installation.

  3. 03

    Trade measure

    We return to take exact measurements for every window and door, and confirm the required materials and specifications — wall depths, reveal returns and sill lines all recorded before anything is ordered.

  4. 04

    Manufacture

    Once you approve, the package goes into manufacture to your confirmed sizes and specification, made to the relevant Australian Standards. We keep you posted on progress and give you a realistic install window.

  5. 05

    Pre-install planning

    Before install day we confirm access, parking, which rooms are being done in what order, pets, working hours and anything else that affects the household. You know exactly what's happening before we arrive.

  6. 06

    Protecting the work areas

    Before installation, we provide the preparation requirements so you can arrange reasonable access around each opening. We protect the relevant floors, access paths and nearby surfaces as required, using hard floor protection or dust screens where the work and site conditions call for them. Removal is completed carefully to minimise disturbance to surrounding finishes.

  7. 07

    Removal & installation

    Old units are removed and the new windows or doors are fitted, packed, fixed, sealed and weatherproofed. Any opening worked on that day is made secure and weather-tight before the team leaves site.

  8. 08

    Clean up

    All old frames, glass, offcuts and packaging leave with us. Floors are vacuumed, glass and frames are cleaned down, sills are wiped, and the rooms are put back the way we found them — not left for you to deal with.

  9. 09

    Handover & sign-off

    We walk the job with you opening by opening: every sash operated, every lock and screen demonstrated, and cleaning and maintenance explained. Anything you're not happy with is noted and rectified before we call it complete.

  10. 10

    After-sales service

    Your warranty documentation is issued in writing, and we remain available if you need support after installation — you call us, not a call centre.

Care on site

We treat it like someone lives there.

Replacing windows in an occupied home means taking the walls apart around the people living in it. How that is handled — the protection before, the care during removal, and the clean up after — is the part homeowners actually remember.

  • 01

    Access and work-area protection

    Customers arrange reasonable access around each opening in line with the pre-installation requirements we provide. We protect relevant floors, access paths and nearby surfaces as required for the work.

  • 02

    Dust containment

    Where a job calls for it — heavier removal work, brick or plaster disturbance, or occupied rooms nearby — protection screens are set up between the work area and the rest of the home so dust stays where the work is.

  • 03

    Weathertight every night

    Any opening worked on that day is made secure and weather-tight before the team leaves site.

  • 04

    Careful making good

    Reveals, architraves and sills are left square, sealed and paint-ready, with existing brickwork, render and plaster protected during removal.

Neat internal silicone finish where a new double glazed window meets the reveal
Internal seal and reveal, finished

Every opening worked on is secured the same day.

Any opening worked on that day is made secure and weather-tight before the team leaves site.

Our 10 year warranty

Enquiries

Installation questions.

uPVC stands for unplasticised polyvinyl chloride. It is a durable, low-maintenance material widely used for high-performance window and door frames due to its excellent thermal efficiency, resistance to moisture and corrosion, and long service life.

Next step

Ready to talk windows and doors?

Tell us about the home and the project. We'll discuss what you're after, confirm the openings, and provide a clear written quotation.

View projects 0477 982 832

Request a consultation

Windows & doors · Melbourne

Plans or photos (optional)

Plans, elevations, window schedules or photos of your existing openings. Images or PDF, up to 5 files, 10MB each.

Free measure & quote · No obligation

Builders & architects

Window and door packages for considered residential projects.

Working with builders, architects, designers and developers on new builds, renovations and replacement glazing across Melbourne. Get in touch to discuss project packages and trade arrangements.

Request a consultation