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Retrofit Double Glazing in Gore & Southland
Keep the windows you have and swap the single pane for a sealed double-glazed unit. Warmer rooms, dry glass in the morning and a quieter house, without the cost or the mess of new joinery.
10-year guarantee on every sealed unit.
Free measure and quote across Gore and Southland.
Why Retrofit Double Glazing Instead of Replacing Your Windows?
Your frames are usually fine. It’s the single pane of glass letting the heat out. Retrofitting fits a new double-glazed unit into the joinery you already have, so the house looks the same from the street and you’re not paying for new windows, new sills or a painter.
Heat Stays in the Room
- Two panes with a sealed, argon-filled gap
- Low E coating reflects heat back inside
- Cold spots beside the window disappear
- Heating bill drops over winter
A single pane is close to no insulation at all. A sealed unit roughly halves the heat lost through the glass, and in a Southland winter that’s most of the heat a room loses.
Dry Glass in the Morning
- Inside pane stays warmer
- No water pooling on sills and frames
- Fewer mould spots on curtains and seals
- Drier, healthier air for the household
Condensation forms when warm indoor air meets cold glass. Keep the inside pane warm and there’s nothing to wipe off, and nothing feeding mould in the corners.
A Quieter House
Two panes and an air gap take the edge off traffic, the neighbour’s dog and a southerly on the roof. For bedrooms on the road side we can fit laminated acoustic glass in the unit for a bigger drop again.
How Retrofit Double Glazing Works
From first phone call to the last window is usually a few weeks, most of it waiting on the units to be made. The install itself is a day or two for an average house, and we work one window at a time so you can keep living in it.
Free measure and quote
We come out, check every window, confirm the joinery is sound and measure each opening. You get a written price per window, so you can do the whole house or start with the bedrooms.
Glass made to size
Units are manufactured to your measurements with Low E glass and argon fill as standard. Allow two to three weeks.
Install, one window at a time
We lift out the single pane, fit a deeper bead or adaptor to carry the thicker unit, and seal it in. No scaffolding, no new frames, no painting.
Clean up and guarantee
Old glass goes with us and the windows are left clean. Sealed units carry a 10-year guarantee against seal failure and fogging.
Windows and Doors We Can Retrofit
Aluminium joinery
The most common retrofit in Southland. The existing beads come out and a deeper bead goes in to hold the double-glazed unit.
Timber windows
Villas and bungalows can usually be done too. We rout the rebate deeper or fit a timber adaptor, provided the frames are sound.
Ranch sliders & doors
Sliding and French doors carry a lot of glass. We check rollers and hardware will take the extra weight before we quote.
Low E, tinted & acoustic
Low E is standard. Tinted, obscure and laminated acoustic glass are available for the rooms that need them.
Serving Gore, Mataura, Edendale, Wyndham, Riversdale, Lumsden, Tapanui, Te Anau and the wider Southland district.
“The house is noticeably warmer, the windows are dry in the morning and the road noise has dropped right off. The crew turned up when they said they would and left everything tidy.”
Sue Rutherford · Retrofit double glazing, Gore
guarantee on sealed units
measure and written quote
typical whole-house install
Gore owned and operated
Retrofit Double Glazing FAQs
How much does retrofit double glazing cost?
It comes down to how many windows, how big they are and which glass you choose. As a rough guide it works out at well under half the price of new double-glazed joinery for the same openings. We quote per window, so you can see exactly where the money goes and stage the job if you’d rather.
Will it work with my existing windows?
Most aluminium joinery from the 1970s on, yes. Timber windows usually, as long as the frames are sound. The free measure is where we confirm it. If a window isn’t suitable we’ll say so rather than fit something that won’t last.
Does it stop condensation completely?
On the glass, in nearly every case. If the house has damp under the floor or a bathroom that doesn’t vent, you might still see a little on the coldest mornings. We’ll be straight with you about that at the measure.
How long does the install take?
A typical three-bedroom house is one to two days once the units arrive. One window at a time, so there’s never a hole in the wall overnight.
Is there a guarantee?
Sealed units are guaranteed for 10 years against seal failure and fogging between the panes. Our workmanship is guaranteed on top of that.
Can I get help with the cost?
Most New Zealand banks offer low or no-interest top-ups for energy efficiency upgrades, and double glazing qualifies with the main ones. Check with your bank. We can supply the quote in whatever format they ask for.
Request a Double Glazing Quote
Tell us roughly how many windows and where the house is, and we’ll arrange a free measure.
- 03 208 0999
- office@hokonui-autoglass.co.nz
- 2 Avon Street, Gore, 9170
- Monday - Friday, 8am -5pm