Australia's Original
AS/NZS 4859.2:2018
Licence 7177
For Garage Door Systems
ThermaDoor is designed and manufactured in Queensland, with our factory at Chevallum on the Sunshine Coast. When you order a ThermaDoor kit to Wollongong and Illawarra, you are buying Australian made insulation from a business that has engineered its product specifically for the Australian climate — not an imported generic kit adapted for local conditions.
From the humid beachside suburbs of Wollongong and Shellharbour to the warmer inland areas around Dapto and Albion Park, Illawarra summers are intense. ThermaDoor dramatically reduces radiant heat transfer, keeping your garage significantly cooler through the hottest months.
The Illawarra coastline means garages are exposed to moisture-laden, salt-heavy air year-round. An uninsulated metal door absorbs heat and allows condensation to build up inside. ThermaDoor's laminated vinyl finish is water resistant and impact resistant, unlike open-cell foam or polyester batts that absorb moisture and deteriorate over time.
Cold air rolls down from the Illawarra Escarpment overnight in winter, making garages in suburbs like Figtree, Keiraville and Helensburgh significantly colder than the coast. ThermaDoor slows heat loss overnight, so stepping into your garage on a winter morning is no longer a shock — and your stored gear, tools, and vehicles stay protected from the cold year-round.
ThermaDoor has been on the Australian market since 2012 — and in that time, no other brand has matched what we offer:
Our article on thermal bridging and garage doors explains why tested assembly values matter.
Are you a builder, architect, or energy assessor? View our Trade & Industry Hub for full NatHERS and NCC 2022 compliance data.
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.
Registered Australian Design. Protected under the Designs Act 2003 (Cth). Unauthorised reproduction prohibited.
To understand how garage door insulation works and what to look for, read our garage door insulation guide before you buy.
With a stable, comfortable temperature year-round, Wollongong and Illawarra 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.
Want to insulate your Wollongong or Illawarra 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 Wollongong, Shellharbour, Kiama, Dapto or anywhere across the Illawarra? 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.
Our DIY kits come with everything you need for a straightforward installation. Pricing is based on the number of panels required for your door, does not include freight.
| Door Size | Panels | Price (from) |
|---|---|---|
| Single Door | 8 panels | From $290 |
| Single Door (Large) | 10 panels | From $340 |
| Double Door | 16 panels | From $580 |
| Double Door (Large) | 20 panels | From $680 |
WE DO IT FOR YOU
Rather let us insulate your garage for you? ThermaDoor is supplied and installed by authorised distributors in the Wollongong and Illawarra region. Find your nearest distributor below.
Looking for other areas? See our list of professional distributors Australia wide.
Wollongong, Figtree, Keiraville, Fairy Meadow, Thirroul, Bulli, Corrimal, Towradgi, Balgownie, Mount Keira, Unanderra, Coniston, Port Kembla, Warrawong, Lake Illawarra.
Shellharbour, Albion Park, Dapto, Oak Flats, Kiama, Gerringong, Berry, Jamberoo, Minnamurra, Dunmore, Flinders, Haywards Bay, Barrack Heights, Blackbutt.
DIY kits ship to all Wollongong and Illawarra postcodes.
View all New South Wales regions
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.
See why over 20,000 Australian homeowners choose the only purpose-built garage door insulation made in Australia.
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Karen and the crew were fantastic to deal with from start to finish. The product is amazing and has decreased the temperature in our garage by 10–15 degrees C and also decreased the temp in our house. It was super easy to self install. Massive thumbs up!”
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“Our garage was very hot and a suggestion from a friend meant that we contact ThermaDoor. From the initial contact to the completion, the company was very professional. The product is very good and I would definitely get their team to install. Today Don arrived on time and got the job done very quickly. The addition of the door seals was a good decision as they remove any dust and breeze that used to come through the sides and top.”
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“Garage temps have dropped 4–6°C since installation and so glad we installed the ThermaDoor panels. We built a new house in 2023/2024 and the garage door gets full western sun every afternoon. I made sure to take note of our garage temps before installation and noticed immediately after installation the temp dropped 4–6°C in summer and in winter it’s not as cold. I also noticed the noise is reduced.”
⭐⭐⭐⭐⭐
“Everything about ThermaDoor was fantastic. Easy online ordering, fast interstate delivery and DIY installation was straightforward and a breeze. I would recommend the business and the product.”
Ready to transform your garage?
Yes, and it works particularly well here. The Illawarra combines coastal humidity with strong summer sun and cold escarpment air in winter, which means uninsulated garage doors heat up fast in summer and lose warmth quickly overnight. ThermaDoor’s EPS core dramatically reduces heat transfer through the door panels, keeping your garage cooler in summer and warmer in winter. It is independently tested to Australian Standards with an R-value of R1.43 (winter) and R1.39 (summer).
You can absolutely do it yourself. ThermaDoor DIY kits are designed for homeowners with no trade experience. Most people complete a standard double garage door in two to three hours using only basic tools — a tape measure, straight edge and a sharp utility knife. Full installation instructions are included, and video guides are available on our website.
ThermaDoor panels are designed to fit the vast majority of sectional garage doors sold in Australia, including B&D, Steel-Line, Gliderol, Centurion and most other common brands. The panels are trimmed to fit the exact dimensions of your door’s indentations, so they work across a wide range of door sizes and styles.
No. ThermaDoor’s laminated vinyl facing is moisture resistant and will not absorb humidity or salt air. Unlike open-cell foam or polyester batts, our panels will not swell, rot or deteriorate in coastal conditions. They wipe clean easily and are built to last in the Australian environment.
ThermaDoor has an authorised distributor in Wollongong — Impact Garage Doors at 1/56 Swans Street, Wollongong. They can supply and professionally install ThermaDoor insulation across the Wollongong and Illawarra region. Their contact details are listed on this page.
Yes. ThermaDoor is 100% Australian made and owned, manufactured to withstand the full range of Australian climates. Our insulation has been independently tested to the most current Australian Standards and has been protecting Australian garages since 2012.
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.
