DIY kits delivered anywhere in Coffs Harbour & Northern Rivers
Professional installation via our authorised distributors (see details below).
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.
From the humid coastal stretches of Coffs Harbour to the intense summer sun of the Tweed Valley, ThermaDoor dramatically reduces radiant heat transfer, keeping your garage significantly cooler during long, sticky summers.
The Northern Rivers is known for heavy seasonal rainfall and high humidity. ThermaDoor's laminated vinyl finish is water-resistant and won't absorb moisture, unlike open-cell foam or polyester batts that can sag, degrade, and hold dampness over time.
Inland areas like Lismore, Casino, and the hinterland experience sharp overnight temperature drops in winter. ThermaDoor slows heat loss overnight, so stepping into your garage on a winter morning is no longer a shock — and your stored gear stays protected year-round.
With a stable, comfortable temperature year-round, Coffs Harbour & Northern Rivers 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:
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.
| What We Test | ThermaDoor Standard |
|---|---|
| R-Value Type | Full door assembly value — not just the insulation material |
| Testing Standard | AS/NZS 4859.1 & AS/NZS 4859.2:2018 |
| Season Specificity | Dual-season: R1.43 (winter) / R1.39 (summer) |
| Independent Verification | Qualified thermal engineer report — download link below |
| Air Gap | Purpose-built thermal break between panel and door |
| Includes Steel & Hinges | Yes — tested on the complete installed door assembly |
In Coffs Harbour and Northern Rivers, 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.
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.
Want to insulate your 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 Coffs Harbour, Lismore, Byron Bay, Ballina or anywhere across the Northern Rivers? 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.
Not sure if garage door insulation is right for you? Read why garage door insulation is worth it in Australia.
Answer 4 quick questions — we'll tell you exactly which kit fits your door and what it costs.
Your door brand determines the panel thickness required.
What is your panel thickness?
Count the individual panel sections across the full width of your door.
Measure every panel, then enter the largest measurement below.
⚠ Measure every panel before entering anything
Panels on the same door are often different sizes. If you only measure one panel and it turns out not to be the largest, your kit will be too small. Measure all panels first, then enter the longest length and largest height below.
Your price is ready
Based on your measurement
Kit price
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Order details
ThermaDoor panels are trimmed to fit. Always cut panels to size during installation — never force an oversized panel.
Before you order — confirm your shop selections
The shop dropdown defaults to a random size. Tick each item below to confirm you have changed it to the correct value.
WE DO IT FOR YOU
Rather let us insulate your garage for you? ThermaDoor is supplied and installed by authorised distributors across Coffs Harbour & Northern Rivers. Find your nearest distributor below.
Looking for other areas? See our list of professional distributors Australia wide.
Coffs Harbour, Sawtell, Woolgoolga, Toormina, Moonee Beach, Coramba, Bellingen, Urunga, Nambucca Heads, Macksville.
Lismore, Ballina, Byron Bay, Tweed Heads, Casino, Kyogle, Murwillumbah, Kingscliff, Lennox Head, Alstonville, Mullumbimby, Ocean Shores.
DIY kits ship to all Coffs Harbour & Northern Rivers postcodes.
Also servicing Mid North Coast NSW
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.
Peter Harding shares his experience with ThermaDoor garage door insulation after having it installed three times over 12 years.
Ready to transform your garage?
Yes. ThermaDoor DIY kits ship directly to any residential or commercial address across Coffs Harbour, Lismore, Ballina, Byron Bay, Tweed Heads and all surrounding Northern NSW postcodes. Delivery is handled via standard courier and most orders arrive within a few business days.
Yes. Professional installation is available through our network of authorised ThermaDoor distributors operating across Northern NSW. They can supply and install the panels directly into your existing garage door.
Absolutely. ThermaDoor panels feature a high-density EPS core backed by construction-grade sisalation foil, which acts as a Class 2 vapour barrier. The vinyl facing is water-resistant and won’t absorb moisture or humidity, making it ideal for the coastal Northern NSW climate.
ThermaDoor is designed to fit standard sectional and tilt garage doors from all major Australian manufacturers, including B&D, Steel-Line, Gliderol, Centurion, and Taurean.
Most homeowners can install a ThermaDoor DIY kit on a standard double garage door in 2 to 3 hours. The kit includes pre-cut panels, a specialised cutting tool, and comprehensive instructions.
Yes. ThermaDoor is independently tested to AS/NZS 4859.1 and AS/NZS 4859.2:2018. It is the only garage door insulation kit in Australia with verified dual-season assembly R-values of R1.43 (winter) and R1.39 (summer).
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.
