Est. 2012
Australia's Original
Independently Tested
AS/NZS 4859.2:2018
Australian Made
Licence 7177
Purpose Built
For Garage Door Systems
ThermaDoor is Purpose Built. Not Repurposed.
Most products sold as garage door insulation are generic building materials: wall batts, PIR foam, foil wraps, stick on rubber, or plain polystyrene sheets adapted for a use they were never designed for. ThermaDoor is different. It is the only garage door insulation kit in Australia engineered specifically for the daily movement, weight tolerances, and thermal demands of a garage door system. Independently calculated to AS/NZS 4859.2:2018 and backed by engineering reports, ThermaDoor delivers verified R1.48 (winter) and R1.43 (summer) ratings for the complete installed system, not just the raw material.
High-Density EPS Core
Expanded polystyrene foam delivers superior thermal resistance — keeping your garage significantly cooler in summer and warmer in winter, year after year.
UV-Stable Vinyl Facing
Durable, UV-resistant vinyl facing protects the panel from the elements and delivers a clean, professional finish that holds up in Australia's harsh climate.
Sisalation Foil Backing
The same foil used to wrap Australian homes for thermal protection. Bonded to the back of every panel, it blocks radiant heat transfer for an additional layer of performance.
Why Lamination Changes Everything
Loose layers of insulation shift, separate, and fail inside a moving door. ThermaDoor’s three layers are factory-laminated into a single rigid panel using the same process applied in luxury caravan and marine interior manufacturing, bonded under pressure so they move as one unit. There is no glue to fail, no layers to separate, and no air bubbles to compromise performance. This is not an assembly step you do at home. It is a manufacturing process that ensures the EPS core, UV-stable vinyl facing, and construction-grade sisalation foil remain in precise contact throughout the life of the product, maintaining the thermal performance the engineering reports are based on. It is the difference between a system and a collection of materials.
Key Benefits of ThermaDoor Garage Door Insulation
Improved Comfort
- Keeps your garage cooler in summer and warmer in winter, reducing hot and cold drafts and stabilising temperatures in adjoining rooms.
Energy Efficiency
- Verified R1.48/R1.43 ratings reduce the heat load on your cooling and heating system, lowering energy bills with numbers you can actually trust.
Protection & Durability
- Protects stored items from temperature extremes. Correct installation also protects your garage door mechanism and motor from unnecessary strain.
Noise Reduction
- Significantly reduces outside noise entering through the garage door, providing a quieter environment for rooms adjacent to or above the garage.
Home Value & Lifestyle
- Transforms your garage into a usable year-round space — home gym, office, studio or playroom — while improving the overall energy rating and appeal of your property.
Safety & Compliance
- Flame-retardant EPS core, independently tested to AS/NZS 4859.2:2018. The only garage door insulation kit in Australia with assembly engineering reports.
Built for Australian Conditions
Every design decision was made with Australia’s climate in mind – including extreme summer heat
ThermaDoor is designed and manufactured in Australia by an Australian builder who understood that our climate demands more than a European or American product can deliver. From the 35mm flame-retardant EPS core that handles extreme summer heat without deforming, to the UV-stable vinyl face that won’t yellow or crack in direct sun, every material choice was made with Australian conditions in mind. It is why ThermaDoor has been the original purpose-built garage door insulation on the Australian market since 2012.
ThermaDoor — Who Is It For?
Whether you’re a homeowner looking to improve comfort or a trade professional specifying insulation solutions — ThermaDoor has you covered.
DO IT YOURSELF
DIY Kit
Everything you need to insulate your own garage door in a few hours. No special tools, no trades required. Our step-by-step guide walks you through the whole process.
Not sure if garage door insulation is right for you? Read why garage door insulation is worth it in Australia.
WE DO IT FOR YOU
Supply & Install
Prefer to leave it to the experts? Our professional installation teams service the Gold Coast, Brisbane and Sunshine Coast. We measure, cut, and fit for your sectional and tilt door – you just enjoy the result.
Not in these areas? See out list of professional distributors Australia wide.
The Professional's Choice
Designed by a licensed builder who couldn’t find a product that met real construction standards — so he built one. Australia’s only purpose-built, independently tested garage door insulation with verified R-values and full technical documentation.
Tested & Certified
Independently tested to AS/NZS 4859.2:2018. Verified R-values you can specify with confidence.
Engineering Reports
Thermal documentation available for NatHERS compliance and energy assessments.
Trade Supply
Flexible supply arrangements for garage door businesses, builders, and installers across Australia.
Technical Support
Our team understands the technical requirements. We're here to help you specify the right solution.
Transform Your Garage
Homeowners across Australia are converting their insulated garages into year-round living spaces.
See the Difference ThermaDoor Makes
Real installs. Real results. Read the full comparison.
DIY Kit — Installed by a homeowner
From generic foil to purpose made ThermaDoor
Supply & Install — Professional fit by our team
| Before ThermaDoor | After ThermaDoor | |
|---|---|---|
| Summer temperature | Garage reaches 50°C+ | Noticeably cooler — less heat into adjoining rooms |
| Winter comfort | Cold, damp, unusable space | Warmer and more usable year-round |
| Noise | Traffic and rain echoes through | Significantly reduced outside noise |
| Energy bills | Heat transfers into home, AC works harder | Reduced heat load on your cooling system |
| Insulation fit | Generic products that don’t fit properly | Purpose-built panels cut to your exact door |
| Installation | Complicated DIY with wrong materials | Simple DIY kit or professional supply & install |
Don't Just Take Our Word For It
See why over 20,000 Australian homeowners choose the only purpose-built garage door insulation made in Australia.
What DIY Customers Are Saying
Straight from the people who installed it themselves.
Ready to Transform Your Garage?
Australia’s only purpose-built garage door insulation — independently tested, made to fit, built to last.
Servicing Gold Coast, Brisbane & Sunshine Coast ·Distributors available Australia-wide