Replacement UPVC Windows with double glazing replaces your existing single glazing with new double glazed windows & doors.

Our Retrofit service is available exclusively in Auckland. We specialize in retrofitting existing aluminium and timber-framed windows with double glazing to reduce heat loss, control overheating, and minimize noise. This upgrade enhances your home’s energy efficiency, making it healthier, warmer, and more comfortable year-round. RetroFit Double Glazing, a subsidiary of Metro Performance Glass, is Auckland's top choice for retrofit double glazing, with over 45 years of industry expertise.

Replacement joinery

For full replacement joinery, we offer both thermally enhanced aluminium and uPVC windows and doors. Although full replacement is a more significant investment, it is often necessary if your existing timber windows show signs of rot. Rotting timber windows are likely to continue deteriorating, making complete removal and replacement with new, durable joinery the best solution for long-term performance and prevention.

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Insert windows

With Insert windows, we remove both opening and fixed windows, along with all internal timber, leaving only the exterior frame intact. A new uPVC window is then fitted into the existing frame, and the interior is completed and cleaned. This method provides brand-new windows while preserving the original character of your home. The Insert option is a straightforward way to upgrade to thermally efficient, maintenance-free joinery, enhancing your home with minimal disruption.

Deciding between uPVC and aluminium joinery

Both options are good if we are comparing thermally enhanced aluminium joinery to upvc,

however if you are after the highest R Value (insulation value) then upvc is the way to go.

Thermally broken aluminium

uPVC joinery

Manufacturers of Klima uPVC

At the Window Factory, we are authorized Klima uPVC manufacturers based in Auckland. Klima® offers an energy-efficient window and door solution that surpasses aluminium joinery in insulation performance. For added customization, Klima® features an external powder-coated aluminium clip called AluClip, with a classic white interior. For those seeking different interior colors, we recommend our Metro Series Thermal Heart range, which provides thermal enhancement and allows for any color on both the inside and outside of the joinery.

Where can I get my windows and doors replaced?

Our showroom address:

170 Station Road
Penrose
Auckland