Retrofit Double Glazing | Hamilton
Your local specialists in high-performance retrofit double glazing.
ComfortGlaze provides high-performance retrofit double glazing solutions throughout Hamilton and the wider Waikato region. Our local team brings years of experience in aluminium and timber retrofitting, along with new doors and uPVC inserts. We support homeowners from enquiry through installation with a smooth, reliable process backed by proven workmanship and consistent five-star service. If you're looking to improve comfort, warmth, and energy efficiency in your Hamilton home, our team is here to help.
How retrofit double glazing works.
Retrofit double glazing replaces your existing single glass with modern insulated double-glazed units while keeping your current window frames. This means your home benefits from improved warmth, reduced condensation, and better energy efficiency without the cost and disruption of full window replacement.
Because the work is completed within your existing timber or aluminium frames, installation is typically faster and more cost-effective than installing entirely new windows.
Recent , Ōhaupō, Waikato Installation
“In 2025, Comfort Glaze transformed our 100-year-old railway home. With wall, ceiling, and underfloor insulation already in place, we had gained about 7°C. But since their retrofitted double glazing, our home now stays more than 11°C warmer than outside at 6am. David and Josh are highly skilled installers, and the trust we placed in Comfort Glaze has been completely rewarded.
Jeff C
Do You Service My Area?
We service a wide range of areas across the Waikato region, covering both urban and surrounding suburbs. If your home falls within the highlighted map, our team can confidently manage your retrofit double glazing project from quote to installation. If you’re unsure or sit just outside the boundary, get in touch, our team will confirm availability and do our best to assist.
Hamilton Retrofit Double Glazing Services
Home Comfort Steps
Hamilton Double Glazing FAQs
Do you retrofit both aluminium and timber windows in Hamilton?
Yes. We retrofit double glazing into existing aluminium and timber frames throughout Hamilton and surrounding suburbs.
How long does installation usually take?
Most Hamilton homes with aluminium frames are completed within one to two days, depending on size and scope. Timber windows take a bit longer, more like three to five days.
Will double glazing help with condensation and cold winters in Hamilton?
Yes. Double glazing significantly reduces condensation and heat loss, improving comfort during colder winters.
Do you remove windows overnight?
No. All work is completed on site, and windows are never left unfinished overnight.
Can you modernise older aluminium joinery?
Yes. We can remove colonial bars, redundant mullions, and unused doors while upgrading to high-performance double glazing.
How much does retrofit double glazing cost in Hamilton?
Retrofitting existing frames is considerably more affordable than replacing full window units. Pricing depends on window size, quantity, and glass performance, and we provide clear, obligation-free quotes for Hamilton homes.
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