Insert windows (also known as joinery inserts) are a smart renovation solution that allows you to upgrade your windows without removing the existing frames.
Instead of a full window replacement, we install new, modern aluminium joinery inside your current timber or aluminium frames. This improves insulation, appearance, and functionality — with less disruption, lower cost, and faster installation.
This option is ideal for Auckland homes where the existing frames are still structurally sound but the windows themselves are outdated, draughty, or difficult to use.
Minimal disruption – no need to remove cladding or interior linings
Faster installation – often completed in a single day
Cost-effective – lower labour and renovation costs
Improved insulation & weather tightness
Modern look & smoother operation
Ideal for renovation projects and older homes
Insert windows are one of the most popular window upgrade options for homeowners wanting better performance without the cost and complexity of full replacement.
Insert windows work best when:
Existing window frames are straight, solid, and rot-free
You want to avoid recladding or repainting
You’re upgrading an older timber or aluminium window system
You want better thermal and acoustic performance without major building work
If the existing frames are not suitable, we’ll recommend a full replacement instead — always based on what’s best for the home.
Insert windows are new window units installed inside existing window frames, replacing old sashes, glazing, and hardware without removing the original structure.
Yes. Because the existing frame remains in place, insert windows typically cost less than full window replacement and require less labour.
Slightly. Because the new joinery fits inside the existing frame, the visible glass area can be marginally smaller — usually unnoticeable in most homes.
Absolutely. Insert windows significantly reduce draughts and heat loss by upgrading seals, glazing, and frame technology.
Yes. Insert windows are especially popular in older timber-framed homes where owners want modern performance without major renovation work.
Most insert window installations are completed within one day, depending on the number of windows and site access.
In most cases, no — because the existing structure is not altered. We’ll advise if consent is required for your specific project.
With 25+ years experience; we renovate, replace and install new aluminium joinery in homes and businesses. A total service for Auckland North, from Rodney's Warkworth, Orewa, Silverdale and Whangaparaoa down to North Shore, Glenfield, Albany, Takapuna, Beachhaven, Birkenhead and Devonport
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