Australia's Original
AS/NZS 4859.2:2018
Licence 7177
For Garage Door Systems
Building to 7 stars? ThermaDoor is the only garage door insulation with the engineering documentation your energy assessor needs.
ThermaDoor is designed and manufactured in Queensland, with our factory at Chevallum on the Sunshine Coast. When you order ThermaDoor, you are buying Australian made insulation from a business that has engineered its product specifically for the Australian climate.
Adelaide's summers are brutal. Northerly winds off the desert push garage temperatures well past 50°C in an uninsulated space, and north-facing doors cop it hardest. 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 scorching afternoon sun.
South Australia's weather can shift dramatically in a single day. A 42°C northerly in the morning, a cool southerly change by afternoon — and everything in between puts pressure on your garage environment year-round. ThermaDoor's laminated vinyl finish is water resistant and impact resistant, unlike open-cell foam, polyester batts, or fibreglass insulation that deteriorate under repeated thermal stress. Built to handle whatever South Australia throws at it.
Adelaide winters are cooler than most people expect, with overnight temperatures regularly dropping to single digits and frosts common in the Hills. 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.
South Australia's NCC 7-star energy requirements have applied to all new homes and major renovations since October 2024. An uninsulated garage door performs at approximately R0.0 — one of the biggest thermal liabilities in any home. ThermaDoor is the only garage door insulation in Australia with independently calculated assembly R-values to AS/NZS 4859.2:2018. When your builder or designer asks about garage door insulation, ask for ThermaDoor by name.
Read more about why winter is one of the strongest arguments for garage door insulation →
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.
In Adelaide and South Australia, the difference between a material R-value and a tested door assembly R-value is the difference between a product that looks good on paper and one that actually keeps your garage cooler. ThermaDoor’s R1.43 is tested on a complete installed door — steel, hinges, and all.
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.
Whether you prefer to install it yourself or connect with an authorised ThermaDoor distributor, ThermaDoor is available both ways — with the same product, the same quality, and the same result.
DO IT YOURSELF
ThermaDoor DIY kits ship direct to your door anywhere in South Australia, including Adelaide metro, the Adelaide Hills, Barossa Valley, Fleurieu Peninsula, Mount Gambier, Port Augusta, Whyalla and beyond. 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 $290 |
| Single Door (Large) | 10 panels | From $340 |
| Double Door | 16 panels | From $580 |
| Double Door (Large) | 20 panels | From $680 |
* Prices include GST. Freight not included — calculated at checkout based on your postcode. No obligation to buy.
WE DO IT FOR YOU
Prefer to have it done for you? ThermaDoor is supplied and installed by authorised distributors across South Australia. Find your nearest installer below.
Looking for other areas? See our list of professional distributors Australia wide.
Peter Harding shares his experience with ThermaDoor garage door insulation after having it installed three times over 12 years.
With a stable, comfortable temperature year-round, Adelaide and South Australia 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.
Registered Australian Design. Protected under the Designs Act 2003 (Cth). Unauthorised reproduction prohibited.
Ready to get started? Get a quote or shop DIY kits →
ThermaDoor DIY kits deliver to any address in South Australia. Professional installation is available through our authorised distributor network across the state. Whether you are in Adelaide’s suburbs, the Adelaide Hills, the Fleurieu Peninsula, or in regional South Australia, ThermaDoor is available to you.
Glenelg, Norwood, Unley, Prospect, Modbury, Tea Tree Gully, Salisbury, Elizabeth, Pooraka, Parafield, Mawson Lakes, Gawler, Morphett Vale, Hallett Cove, Reynella, Noarlunga, Christies Beach, Marion, Mitcham, Burnside
Barossa Valley, Mount Barker, Victor Harbor, Goolwa, Port Elliot, Murray Bridge, Mount Gambier, Port Augusta, Whyalla, Port Pirie, Kadina, Moonta, Wallaroo, Berri, Renmark, Naracoorte, Keith, Bordertown, Clare, Kapunda
DIY kits ship to all South Australian postcodes.
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 tens of thousands of Australian homeowners choose the only purpose-built garage door insulation made in Australia.
Ready to transform your garage?
Yes — ThermaDoor DIY kits ship directly to any address in South Australia, including Adelaide metro, the Adelaide Hills, Barossa Valley, Fleurieu Peninsula, and all regional areas. Freight is calculated at checkout based on your postcode.
Absolutely. Adelaide regularly records some of the highest summer temperatures in Australia, with northerly winds pushing garage temperatures well past 50°C in uninsulated spaces. In winter, cold fronts from the Southern Ocean bring overnight temperatures down to single digits. ThermaDoor’s EPS panels significantly reduce that thermal transfer, making your garage more comfortable year-round and reducing the load on any heating or cooling in adjacent rooms.
Yes. The ThermaDoor DIY kit is designed to be installed by a homeowner with basic tools in a few hours. No trades are required. Full instructions are included, and our support team is available if you need guidance during installation.
ThermaDoor is supplied and installed by authorised distributors across South Australia. Allstyle Garage Doors in Pooraka services the Adelaide metro area, Copper Coast Garage Doors covers the Yorke Peninsula region, and J & M Door Services covers the Mount Gambier and south-east region. Contact them directly or use our Contact page to be connected with your nearest installer.
Yes. ThermaDoor is purpose-designed for both sectional (panel-lift) garage doors and tilt doors, which are common in older Adelaide homes. If you are unsure which door type you have, contact us and we can help you identify the right kit.
Yes, and the difference is measurable. ThermaDoor’s independently tested EPS panels and reflective foil backing are specifically designed to block radiant heat — the primary driver of extreme garage temperatures in Adelaide’s summer. Customers consistently report significant reductions in garage temperature after installation, particularly in north and west-facing garages that bear the full force of the afternoon sun.
DIY kit pricing starts from $290 for a single door (8 panels) and $580 for a double door (16 panels), not including freight. Freight to South Australia is calculated at checkout. For a professional installation quote, contact your nearest authorised installer.
Yes. ThermaDoor’s EPS core provides meaningful acoustic dampening, reducing street noise and the sound of the door operating. This is particularly noticeable in Adelaide homes on busy roads or in areas with high ambient traffic noise, and in garages that share a wall with a bedroom or living 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.
