Window Tint Film Alternative | UV Protection | Insulation
Window Tint Film Alternative | UV Protection | Insulation
Better insulation, less UV damage — without replacing your windows.
Does this sound familiar?
Some rooms in your home are never quite right — too cold in winter, too hot in summer. You run the heat pump more than you’d like, and the power bill shows it.
Meanwhile, your furniture, carpets, and curtains are slowly fading from UV exposure coming through the glass. Even rooms that feel comfortable have this problem happening silently.
And if you have single glazing, you already know about the condensation. That morning dampness on the glass that never fully goes away.
What is Thermal Glass Coat?
It’s a liquid coating applied directly to your existing glass by a trained technician. It chemically bonds to the surface — it’s not a film, not a sticker, and nothing is stuck on with adhesive.
Once dry, it’s virtually invisible. There’s a very slight blue-green tint in certain light, which most people never notice. It won’t affect your view or your privacy.
Why UV matters — even through double glazing
Most people think UV only comes through single glazing. It doesn’t. Standard double glazing blocks very little UV — the damaging rays still come through and slowly fade everything they touch.
Thermal Glass Coat blocks 99% of UV rays while still letting natural light through. Your rooms stay bright — the damage stops.
Is this the right solution for you?
Thermal Glass Coat works well if you have single glazing and want warmer winters and cooler summers, if you have double glazing that isn’t performing as well as you hoped, or if UV is fading your furniture and floors and you want that sorted without replacing your windows.
If any of these sounds like you, Carole can talk it through — no obligation.
Comparing Thermal Glass Coat as a retrofit Double Glazing alternative is easy, but Window Insulation Film is tricky because there is a massive variance in quality, performance and cost. You can get high quality Window film with comparable performance, but it does cost a lot more.
In Clarke’s beach, a couple were quoted $9,000 for 2 very large, high windows in their lounge to be Double Glazed. We did their whole house for $6,000. High performance Window Film would have cost around $11,000. The job took 2 days. After the 1st day, in the lounge we’d only done the 2 large, high windows. The next morning, the client said “that stuff is amazing, I turned the heat pump down 3 degrees last night, and you haven’t even coated the other windows in the lounge yet”.
In Mt Wellington, a Father of a local Church got 3 Double Glazing quotes for the Church’s home. The lowest was $19,000. We did it for $4,000. High performance Window Film would have cost around $7,000. He reported … “I do not use any heating during the day as it is no longer necessary.”
Carole and Seton have been doing this since 2015. They do the work themselves — no subcontractors. When you book, you get the people who know this product inside out.
Retrofit double glazing means adding a second pane to your existing frames — a major structural job. Access equipment is often needed, and the glass is incredibly heavy.
Many homeowners don’t discover the problems — leaks, warping, frame damage — until two or three years after installation, well after the installer has moved on.
Window film requires visible join lines on larger panes — there’s no way around it. Over time, film is prone to cracking, peeling, and bubbling.
In hot environments it can have serious durability issues and in extreme cases can even crack the glass itself.
We work from the inside, so no access equipment is needed in most homes. The job is quiet, clean, and done in a day.
Your existing glass stays in place — no extra weight, no risk of frame damage. The coating is virtually invisible, with no join lines and no bubbling or peeling. It even works on curved glass.
Thermal Glass Coat is highly durable and scratch resistant — nearly as hard as glass itself. Glass has a pencil hardness of 7h, window films around 3.5h. Thermal Glass Coat sits at 5h.
It’s guaranteed for 10 years against cracking, bubbling, peeling, and delaminating.
I live in a north facing home built in the early 1980’s so it is single glazed. This, combined with an open plan design means the house is freezing and hard to heat in winter and way too hot in summer and suffers from UV damage.
The cost of retro fit double glazing was beyond reach so I began to research other options. I came across Thermal Glass Coat and arranged a consultation. Carole visited with her husband, explained the process, and provided me with a quote.
If I’m completely honest, while I hoped for an improvement, I didn’t believe it could provide what they promised. But was I wrong. My home has been transformed!! Since the treatment has been applied to my windows the heat retention is amazing. I am a complete convert. I lit the fire on the first night and usually it struggles to provide significant warmth. However, within 40 mins I was in a t shirt.
It seems so hard to believe, and it has a 10 year warranty. I have not experienced a summer yet, but I am confident it too will bring significant improvement. Goodbye to excessive heating and cooling bills!!
Thank you Thermal Glass Coat !!
Jennie Lady Fenwick
Nigh on one and a half years ago we were attracted by the properties of window thermal coating.
Because they appeared to be the answer to our problem, we contracted Carole and Seton to coat
our dining room windows to protect the curtains from U.V.
They arrived to do the job and quickly gave us confidence in their workmanship because of their
attention to detail.
A year later, it now being February 2023, and being mightily impressed with the result, and the fact
that we noticed how much warmer the house is in winter, we went and engaged Carole and Seton
once more, to do the bulk of the house.
We have had no regrets as to our decision and can unreservedly recommend the product and Carole
and Seton as the applicators.
Karl Wassilieff
Our apartment is North facing in a high rise in Auckland cbd.
The apartment would get so hot in summer it was unbearable and the air conditioner wasn’t able to keep up. Now after having the coating applied the aircon can actually do its job and the apartment is a pleasant place to be in summer. We are so pleased we had it done. Having the UV protection for our painting and furniture is an added bonus, awesome thanks.
Great job thanks.
Even noticed a big difference in the amount of glare which is important for me because I am very sensitive to the glare
will certainly recommend.
Thanks, very pleased with the results.
We noticed a big difference at night as well as in the morning even though we have
a huge number of windows.
Thanks again
Thank you and the team so much for doing such a fantastic job! We have noticed a marked difference and it is a pleasure coming home now.
Hannah H
These seriously cold nights and mornings are a reminder to us all that winter has indeed arrived.
Because I am very aware of the amount of heat that escapes through windows I did some research on the many options available to reduce this heat loss and save on power consumption while staying comfortable indoors. As a result I have obtained details of the Thermal Glass Coat, coating system that is simple to apply yet effective in reducing heat loss.
Many thanks for your team’s great work. It was efficiently done with minimal disruption apart from moving a bit of furniture around. We have noted an immediate drop in temperature during the day to our north facing front bedroom that gets full sun. It use to feel like a furnace on entering it during the day & it is so much more pleasant to enter during the night to go bed. The house overall is very stable in temperature and even with cooler autumn temperatures overnight the house temperature does not drop overnight.
Our apartment has a lot of glass facing North and when it is closed up all day while we are working we come home to an apartment that is absolutely stifling. Having Thermal Glass Coat applied has made a huge difference, we no longer dread coming home and opening the door. We are really looking forward to seeing the difference in winter now.
We have a renovated villa in Onehunga. The kids bedrooms face south and have quite big windows so the rooms are very cold in winter so we use oil column heaters to keep them warm.
After having the coating applied we had to go and buy smaller heaters because we could not turn the heater down far enough to keep the rooms at the temperature we wanted. A good problem we thought but didn’t really expect that sort of result so we are very happy.
As soon as came home from work, I noticed the difference. My home (in Hastings) felt warmer when I came home from work and was warmer in the morning as well. I first got it in the summer and it really helped to keep my house cooler, but now I’m finding great benefits in the winter too. I need the heating on less than last winter, even though it’s been colder in Hawkes Bay. The best part is it not being so cold in the mornings there being hardly any condensation on the windows. I definitely recommend Thermal Glass as a Double Glazing Alternative for window insulation.