DIY kits delivered anywhere in ACT.
Professional installation via authorised regional distributors
Australia's Original
AS/NZS 4859.2:2018
Licence 7177
For Garage Door Systems
Canberra and the ACT’s garage door insulation — verified R1.43 assembly data for homeowners, builders and energy assessors.
ThermaDoor is designed and manufactured in Queensland, with our factory at Chevallum on the Sunshine Coast. When you order ThermaDoor for Canberra or anywhere in the ACT, you are buying Australian made insulation from a business that has engineered its product specifically for the Australian climate.
Canberra summers are brutal. Inland heat pushes garage temperatures well past 50°C, and west or north-facing doors cop it hardest. There is no sea breeze to take the edge off. ThermaDoor's EPS core and reflective foil backing work together to block radiant heat and keep the garage usable, whether your door faces north, west, or straight into the afternoon sun.
The ACT has the most extreme diurnal temperature range of any Australian capital — it is not unusual to have a 20°C swing between a summer morning and afternoon, or a 15°C drop overnight in winter. ThermaDoor's laminated vinyl finish is water resistant and impact resistant, unlike open-cell foam, polyester batts, or fibreglass insulation that absorb moisture and deteriorate over time. Built to handle whatever Canberra throws at it.
Canberra winters are the coldest of any Australian capital, with overnight temperatures regularly dropping below zero and frosts common from May through August. ThermaDoor slows heat loss overnight, so stepping into your garage on a winter morning is not the shock to the system it used to be — and your stored gear, tools, and vehicles stay protected from the cold year-round.
ThermaDoor gives builders, homeowners and energy assessors verified garage-door assembly R-values, backed by an independent engineering report, to review when the garage affects comfort, heat transfer or adjoining living areas — whether for a new build, renovation or existing home. Ask any supplier for their engineering report.
Read more about why winter is one of the strongest arguments for garage door insulation →
47.6°C
UNINSULATED PANEL SURFACE TEMPERATURE
17.4°C
THERMADOOR PANEL SURFACE TEMPERATURE
30.0°C
SURFACE TEMP REDUCTION
Australia’s original purpose-built garage door insulation — independently tested, made to fit, built to last.
Are you a builder, architect, or energy assessor? View our Trade & Industry Hub for full NatHERS and NCC compliance data.
Surface temperature readings: 37.6°C at the steel hinge (thermal bridge) / 32.6°C at the ThermaDoor panel
What you are seeing: The blue areas show ThermaDoor panels doing their job — blocking radiant heat. The red and orange areas are the steel hinges and panel joins conducting heat straight through the door. This is thermal bridging, and it happens in every sectional garage door. It is why material R-values alone do not tell the full story — and why ThermaDoor’s R-values are calculated on the complete installed door assembly, steel and all.
Our article on thermal bridging and garage doors explains why tested assembly values matter.
Want to insulate your Canberra or ACT garage door? You have two options — insulate your own garage with our DIY kit, or let us insulate your garage through an authorised local distributor.
Same product, same quality, same result.
DO IT YOURSELF
Want to insulate your own garage in Canberra, Belconnen, Tuggeranong, Gungahlin, Woden or anywhere across the ACT? ThermaDoor DIY kits ship direct to your door. Each kit is purpose-built for sectional and tilt doors and comes with everything you need to complete the job yourself in a few hours. No trades required.
Not sure if garage door insulation is right for you? Read why garage door insulation is worth it in Australia.
Indicative Prices only. Use the shop to see your exact price including freight to your postcode, no account required.
| Door Size | Panels | Price (from) |
|---|---|---|
| Single Door | 8 panels | From $320 |
| Single Door (Large) | 10 panels | From $360 |
| Double Door | 16 panels | From $640 |
| Double Door (Large) | 20 panels | From $720 |
* Prices include GST. Freight not included — calculated at checkout based on your postcode. No obligation to buy.
WE DO IT FOR YOU
Rather let us insulate your garage for you? ThermaDoor is supplied and installed by authorised distributors across the ACT. Find your nearest distributor below.
Looking for other areas? See our list of professional distributors Australia wide.
Use the calculator below to estimate the possible payback and long-term value of insulating a suitable Canberra and ACT garage door with ThermaDoor.
These estimates apply to ThermaDoor only and cannot be assumed for other products used as garage door insulation.
Your climate affects how much thermal load your garage door creates and how much insulation can help.
Larger doors have more surface area, so insulation has a greater impact on thermal load.
These factors determine how much the garage door's thermal performance affects your living spaces and energy use.
Your electricity rate
Your results are ready
Based on your inputs
Thermal performance — before & after
Without ThermaDoor
R0.0
Uninsulated steel door
No thermal resistance
ThermaDoor
R1.43
Winter assembly R-value
R1.39 summer
AS/NZS 4859.1 & 4859.2:2018
What ThermaDoor does for your door
Estimated annual energy saving
$250 – $450
Typical estimate · per year
Kit cost (DIY)
—
Typical payback
—
10-yr return
—
Calculated for ThermaDoor only — Australia's original purpose-made, independently tested garage door insulation
Conservative
$120 – $250
per year
Typical
$250 – $450
per year
High Usage
$450 – $700+
per year
Return on investment — based on your DIY kit price
| Scenario | Annual saving | Payback | 10-yr saving |
|---|
Kit from $320 inc. GST. Freight additional — calculated at checkout.
Your inputs
Peter Harding shares his experience with ThermaDoor garage door insulation after having it installed three times over 12 years.
Real results for real Canberra & ACT homeowners
I had my west facing garage door insulated and sealing brushes added to stop dust, some of the best money I have ever spent on a house improvement. Great service, efficient and reasonably priced. I would recommend in a flash.
We’re super impressed with our newly-installed Thermadoor insulation, it works a treat on our north-facing garage door and looks very sharp. Top marks for customer service and Caleb’s very neat and tidy job on the install. Highly recommend this outfit
This is a great product and service. Installed them myself and they work amazingly well. Great price compared to other companies who quoted me and Peter was super helpful in getting the sizing just right. Thoroughly recommend this product and company.
Australia’s original purpose-built garage door insulation — independently tested, made to fit, built to last.
With a stable, comfortable temperature year-round, Canberra and the ACT homeowners are reclaiming their garages as usable living spaces.
Here is how ThermaDoor changes what you can do with your garage.
Train comfortably year-round — no more sweltering summers or chilly winters.
Quieter, more stable temperatures for better focus and lower energy bills.
A retreat that stays cool in summer and warm in winter for real downtime.
Consistent conditions that protect materials and make projects more enjoyable.
A safer, more comfortable space for children’s play – fewer drafts and hot/cold spots.
A calmer climate for pets, reducing heat stress in summer and chills in winter.
ThermaDoor has been on the Australian market since 2012 — and in that time, no other brand has matched what we offer:
Flame retardant, construction-grade expanded polystyrene foam is the primary insulator in every ThermaDoor panel. It slows conducted heat transfer through the door — keeping your garage significantly cooler in summer and warmer in winter, year after year.
Durable, flame retardant, UV-resistant vinyl facing protects the panel from Australia's harsh climate. It resists fading, cracking, and weathering — delivering a clean, professional finish that holds its appearance and structural integrity for the life of the door.
Bonded to the back of every panel, this construction-grade foil reflects radiant heat, acts as a Class 2 vapour barrier, and achieves Group 1 fire performance classification. It's the same foil used to wrap Australian homes — completing the three-layer system.
ThermaDoor DIY kits deliver to any address in the ACT. Professional installation is available through our authorised distributor network across the territory. Whether you are in Canberra’s inner suburbs, the newer growth areas, or the rural fringe of the ACT, ThermaDoor is available to you.
Belconnen, Bruce, Gungahlin, Ngunnawal, Casey, Forde, Amaroo, Dickson, Braddon, City, Barton, Griffith, Manuka, Kingston, Woden, Phillip, Tuggeranong, Greenway, Kambah, Wanniassa, Calwell, Macquarie, Holt, Charnwood, Dunlop
Queanbeyan, Jerrabomberra, Googong, Karabar, Fyshwick, Hume, Mitchell, Symonston, Pialligo, Hall, Tharwa, Paddys River
DIY kits ship to all ACT postcodes.
Australia’s original purpose-built garage door insulation — independently tested, made to fit, built to last.
Available Australia-wide — DIY kits ship nationally · Professional installation available in most states
BEFORE YOU BUY
Most garage door insulation products are marketed using terminology borrowed from walls and ceilings. This free checklist gives you the five questions that cut through the noise — and that most suppliers cannot answer.
Yes — and arguably more so than anywhere else in Australia. Canberra has the most extreme temperature range of any Australian capital, with summer highs above 40°C and winter overnight lows regularly below zero. An uninsulated garage door is essentially a large thermal hole in your home’s envelope. ThermaDoor’s EPS core and reflective foil backing significantly reduce heat transfer in both directions, keeping the garage cooler in summer and warmer in winter. Homeowners across the ACT consistently report a noticeable difference in comfort and a reduction in energy bills after fitting ThermaDoor.
Yes. Canberra experiences genuine sub-zero overnight temperatures from May through August, with frosts common across most suburbs. ThermaDoor slows radiant heat loss through the door panel overnight, which means the garage retains more warmth, your stored gear and vehicles are better protected, and the cold is less likely to bleed into adjoining rooms. It will not turn an unheated garage into a heated room, but the difference on a frosty Canberra morning is significant.
Both options are available. ThermaDoor DIY kits are designed for homeowners with basic DIY skills and can be completed in a few hours with no trades required. Kits ship direct to your ACT address. If you prefer professional installation, ThermaDoor has authorised distributors across Canberra who can supply and fit the product for you. See the distributor cards on this page for local contacts.
ThermaDoor is compatible with sectional panel doors and tilt doors, which are the two most common types found in Canberra and ACT homes. It is not suitable for roller doors. If you are unsure which door type you have, the DIY kit instructions include a simple identification guide, or you can contact one of the local ACT distributors for advice before purchasing.
ThermaDoor DIY kits start from $290 for a single door and $580 for a double door (indicative pricing — see the pricing table on this page for current rates). Professional supply and installation pricing varies depending on door size and the distributor — contact the ACT distributors listed on this page for a quote. ThermaDoor is a one-time purchase with no ongoing costs, and most Canberra homeowners recover the cost through reduced heating and cooling bills within a few years.
ThermaDoor is not a bushfire-rated product and is not a substitute for BAL-rated construction requirements. If your property is in a designated Bushfire Attack Level zone in the ACT, you should check your specific construction requirements with a building professional. For standard residential garages outside designated BAL zones, ThermaDoor performs as intended. Contact us if you have specific questions about your property.
The simplest way to insulate your garage in Canberra is with a ThermaDoor DIY kit. Order online and the kit ships direct to your ACT address. Each kit includes pre-cut ThermaDoor panels sized for your door, all fixing hardware, and step-by-step instructions. Most homeowners complete the installation in two to three hours with no trades required. If you would prefer a professional to handle the job, contact one of the authorised ThermaDoor distributors listed on this page — all four service the Canberra and ACT area.
Need more details? See our full Garage Door Insulation FAQs for compliance, R-values and warranty.
Below is our step by step video guide on how to insulate your garage door with ThermaDoor Garage Door Insulation – Australia’s ONLY PURPOSE MADE garage door insulation!
Call, text, or send an enquiry below to see if we have an installer in your area.
