Garage Door Insulation Sunshine Coast
DIY kits delivered Australia-wide.
Professional installation available on the Sunshine Coast
Est. 2012
Australia's Original
Independently Tested
AS/NZS 4859.2:2018
Australian Made
Licence 7177
Purpose Built
For Garage Door Systems
The Sunshine Coast’s garage door insulation — verified R1.43 assembly data for homeowners, builders and energy assessors.
Garage Door Insulation Built for the Sunshine Coast Climate.
On the Sunshine Coast, humid afternoons and salty sea breezes can turn your garage into a sauna. Cool Hinterland nights and sudden southerly changes mean temperatures can swing dramatically after dark. From Caloundra to Noosa and into the Hinterland, these shifts affect more than just the garage. They impact the comfort of nearby rooms, drive up your energy bills, and cut off a valuable part of your home year-round.
ThermaDoor garage door insulation is purpose-built for the Sunshine Coast climate. Our premium EPS panels are engineered specifically for sectional and tilt doors to block up to 90% of radiant heat, reduce street noise, and instantly upgrade your garage with a durable, wipe-clean vinyl finish.
Proudly Australian owned and manufactured, we offer two simple ways to get ThermaDoor on the Sunshine Coast: order a DIY kit delivered directly to your door, or book a professional installation with our certified local technicians.
Learn how to keep your Sunshine Coast garage cool this summer without air-con.
Locally Based. Australian Made.
ThermaDoor is headquartered on the Sunshine Coast, with our factory at Chevallum. When you buy ThermaDoor, you’re buying Australian made insulation from a local business that knows the Queensland climate firsthand.
What's Your Sunshine Coast Garage Doing to Your Home?
Summer Heat & Humidity
From October through April, an uninsulated Sunshine Coast garage can hit 50°C+ by midday. That heat doesn't stay in the garage — it pushes through shared walls into adjoining rooms and forces your air conditioning to work overtime.
Storm Season & Moisture
Sunshine Coast storm season brings heavy rain, wind-driven moisture, and rapid temperature swings. Open-cell foam and fibreglass insulation absorb that moisture and fail. ThermaDoor's laminated vinyl finish is water resistant and built for Queensland weather.
Cool Winter Mornings
Even in the subtropics, Hinterland nights and winter mornings can bite. An uninsulated door lets cold air settle through the floor into living areas. ThermaDoor slows heat loss overnight so stepping into your garage in the morning isn't a shock to the system.
Home Energy Rating Support
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 →
A Real Home. A Real Result.
For Deborah’s son, an NDIS participant, the garage is “The Cave” — a vital space for his independence and his support team. They had already invested in an epoxy floor and replastering to create something special. But the heat made it almost unusable.
28°C
OUTSIDE AIR TEMPERATURE
44.7°C
DOOR SURFACE TEMPERATURE
30.8°C
DOOR SURFACE WITH THERMADOOR INSTALLED
Australia’s original purpose-built garage door insulation — independently tested, made to fit, built to last.
R-Values, Thermal Bridging and Home Energy Rating Evidence
Why Garage Door Assembly R-Values Matter
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.
Two Ways to Get ThermaDoor on the Sunshine Coast
Whether you prefer to install it yourself or have our team of certified ThermaDoor technicians handle everything, ThermaDoor is available both ways — with the same product, the same quality, and the same result.
WE DO IT FOR YOU
Professional Installation on the Sunshine Coast
Prefer to leave it to the experts? Our professional installation teams service the Sunshine Coast, Brisbane and Gold Coast. We measure, cut, and fit for your sectional and tilt door – you just enjoy the result.
How supply & install is priced: The kit cost is generally the same as our DIY kit pricing — installation is charged additionally depending on travel time and the complexity of your door. Contact us for a fixed price specific to your door.
Not in these areas? See our list of professional distributors Australia wide.
DO IT YOURSELF
DIY Garage Door Insulation Kit on the
Sunshine Coast
Want to insulate your own garage on the Sunshine Coast or surrounds? Everything you need is in the kit — purpose-built EPS panels, reflective foil backing, and a step-by-step guide. No special tools, no trades required. Most Brisbane homeowners complete the job in a few hours.
Not sure if garage door insulation is right for you? Read why garage door insulation is worth it in Australia.
DIY Kit Pricing Guide
Indicative Prices only. Use the shop to see your exact price including freight to your postcode, no account required. Prefer to send us your door details? We’ll send you a DIY quote within a few days.
| 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.
ThermaDoor Garage Door Insulation ROI Calculator
Use the calculator below to estimate the possible payback and long-term value of insulating a suitable Sunshine Coast garage door with ThermaDoor.
These estimates apply to ThermaDoor only and cannot be assumed for other products used as garage door insulation.
Step 1: Where are you located?
Your climate affects how much thermal load your garage door creates and how much insulation can help.
Step 2: What size is your garage door?
Larger doors have more surface area, so insulation has a greater impact on thermal load.
Step 3: Tell us about your home
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
Garage Door Insulation and Home Energy Rating
Where ThermaDoor Fits in Energy-Performance Discussions
Hear it From a ThermaDoor Customer
Peter Harding from Hervey Bay shares his experience with ThermaDoor garage door insulation after having it installed three times over 12 years.
Trusted by Homeowners on the Sunshine Coast
Real results for real Sunshine Coast homeowners
Christina J
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.
Peta W
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
Justin H
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.
Unlock the Potential of Your Garage
What Changes When You Insulate Your Garage Door
- Customers report up to a 20°C reduction in garage temperature (results vary depending on garage orientation and other factors)
- Noticeably reduces street noise and the sound of the door operating, particularly in garages connected directly to living areas
- The durable white vinyl laminate finish instantly brightens your garage and is easy to wipe clean
With a stable, comfortable temperature year-round, Sunshine Coast homeowners are reclaiming their garages as usable living spaces.
Here is how ThermaDoor changes what you can do with your garage.
Home Gyms
Train comfortably year-round — no more sweltering summers or chilly winters.
Home Offices
Quieter, more stable temperatures for better focus and lower energy bills.
Man Caves
A retreat that stays cool in summer and warm in winter for real downtime.
Hobby Studios
Consistent conditions that protect materials and make projects more enjoyable.
Playrooms
A safer, more comfortable space for children’s play – fewer drafts and hot/cold spots.
Pet Rooms
A calmer climate for pets, reducing heat stress in summer and chills in winter.
The Original. Still the Only.
ThermaDoor has been on the Australian market since 2012 — and in that time, no other brand has matched what we offer. It is the original and still the only purpose-made garage door insulation on the Australian market. Proudly designed, owned and manufactured in Australia by an Aussie builder, and engineered specifically for sectional and tilt garage doors — not repurposed from wall or ceiling products.
Three Layers. Engineered as One
High-Density EPS Core
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.
UV-Stable Vinyl Facing
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.
Sisalation Foil Backing
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.
Servicing All of the Sunshine Coast and Surrounds
Southern Sunshine Coast
Caloundra, Kawana Waters, Bokarina, Birtinya, Sippy Downs, Mooloolaba, Maroochydore, Buderim and surrounding suburbs.
Northern Sunshine Coast & Hinterland
Noosa Heads, Noosaville, Tewantin, Cooroy, Eumundi, Nambour, Bli Bli, Yandina and surrounding suburbs.
No matter your location, you will be looked after by a local expert who understands the specific needs of Sunshine Coast homes.
Don’t see your suburb? We service the entire Sunshine Coast region — contact us to confirm.
Looking for installation outside the Sunshine Coast? See our Gold Coast and Brisbane teams.
Custom Garage Door Insulation Solutions
Have a custom or specialty garage door? We’ve got you covered. Whether it’s a tilt door, RV garage door, airplane hangar door or even acrylic panel doors, ThermaDoor can provide the right insulation solution.
We specialise in tailored garage door insulation for non-standard and oversized openings. Contact us today to discuss your unique door and get expert advice on the best insulation fit.
ThermaDoor. Leave it to the experts.
6.8 → 7.2 Stars
Independent NatHERS Modelling | Sunshine Coast Climate Zone 10 | ThermaDoor Installed
Struggling to Hit 7 Stars? Your Garage Door Might Be the Answer
How Garage Door Insulation Helps Sunshine Coast New Builds Meet NCC 2022
If you are building a new home in Queensland, you already know about the 7-star NatHERS energy efficiency requirements under NCC . Hitting that target can be difficult and expensive -- upgraded glazing, extra roof insulation, costly design changes.
Many homeowners and their builders overlook the largest moving part of the house: the garage door.
Independent energy modelling on a standard slab-on-ground home on the Sunshine Coast (Climate Zone 10) showed that insulating an unconditioned garage with ThermaDoor garage door insulation improved the home's NatHERS rating from 6.8 stars to a compliant 7.2 stars. That is a +0.4 star improvement from a single, low-cost upgrade. If your garage is air-conditioned, the improvement jumps to +1.4 stars.
To count in your NatHERS assessment, your energy assessor needs a verified assembly R-value -- not a material R-value or an unverified claim. ThermaDoor provides an independently verified R1.43 winter assembly R-value, calculated to AS/NZS 4859.2:2018 by a registered professional engineer. That is the exact number your assessor inputs into their NatHERS software.
Your next steps are simple:
1. Tell your builder you want ThermaDoor specified in your new build.
2. Send your energy assessor the link below -- it has the verified R-value report and full NatHERS compliance data they need.
BEFORE YOU BUY
Still Shopping Around for Garage Door Insulation? Start Here.
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.
- Door-specific R-value checks (AS/NZS 4859.1 and 4859.2)
Get a Quote Today
Tell us about your door. We’ll handle the rest.
Frequently Asked Questions - Garage Door Insulation Sunshine Coast
How much does garage door insulation cost
DIY kit pricing is shown in the pricing guide on this page. For supply and install, the kit cost is the same as the DIY price with installation charged additionally depending on travel and complexity — contact us for a fixed quote.
Why is garage door insulation important on the Sunshine Coast
The Sunshine Coast experiences high humidity, salty air, and hot summers that can turn garages into ovens. Insulating your garage door with ThermaDoor helps block radiant heat, reduces temperature fluctuations and helps keep adjoining rooms more comfortable – especially during Queensland’s sweltering days.
Can I DIY, or do I need a pro - and how long does it take?
A confident DIYer can finish a double sectional door in about 3 hours using ThermaDoor’s pre-cut kit. Prefer a pro job? Our authorised garage door pros supply, fit and spring balance in around 2 hours – depending on the job.
Will ThermaDoor insulation hold up in coastal conditions of the Sunshine Coast?
Yes. ThermaDoor is purpose built for Australian homes and performs exceptionally well in coastal climates. The durable vinyl laminated surface resists moisture and salt air and provides further protection to the construction grade EPS core – it won’t degrade or become waterlogged over time due to humid environments.
Is ThermaDoor made in Australia?
Yes — ThermaDoor is proudly Australian made garage door insulation. Our business is headquartered on the Sunshine Coast at Chevallum, Queensland, and every ThermaDoor panel is manufactured in Australia to our own registered design — protected under the Designs Act 2003 (Cth). ThermaDoor is the only purpose-made garage door insulation designed and produced in Australia — not a repurposed wall or ceiling product adapted for garage doors. When you buy ThermaDoor garage door insulation on the Sunshine Coast, you’re supporting a local business and getting a product built specifically for Australian conditions, Australian door sizes, and Australian building standards.
What garage door types does ThermaDoor fit — sectional and tilt?
Yes — ThermaDoor is designed to fit both sectional garage doors and tilt garage doors. Each panel is custom-cut to suit the specific dimensions of your door, whether it’s a single or double door, sectional panel or tilt slab. The mechanical fixing system — no glue, no adhesive tape — works with both door types and is designed to stay securely in place as the door operates over thousands of cycles. If you’re unsure which door type you have or how many panels you need, our team can help you measure up before you order. Use our online measurement guide or contact us directly for advice specific to your Sunshine Coast home.
Need more details? See our full Garage Door Insulation FAQs for compliance, R-values and warranty.
Our Videos
Videos & Guides
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!