Peter is a licensed builder with over 45 years of experience in the construction industry. In 2012, his expertise in energy efficient construction inspired the invention of ThermaDoor Premium garage door insulation - the original purpose made garage door insulation in Australia.
If you’re trying to improve your home’s energy performance, the best R value for garage door insulation is a verified one.
But what is an R-value, and why does verification matter?
The best R-value for garage door insulation Australia measures how well insulation resists heat flow. The higher the number, the better its thermal performance. But many insulation products marketed for garage doors use R-values that were determined for completely different conditions—like walls or ceilings. That’s misleading and may result in poor energy outcomes.
So, if you’re asking, “How do I insulate my garage properly?”—it starts with using insulation that’s been determined for garage doors specifically.
Plenty of products on the market claim high R-values but were never tested on metal garage doors. Here’s what to watch out for:
Tested for the wrong application – Many products show R-values based on walls or floors, not garage doors
Imperial ratings – Some list American imperial R-values, which are not equivalent to Australian metric R-values and appear much higher.
Inaccurate modelling – If you are building a new home or undertaking significant renovations, using unverified R-values in NatHERS software can mislead energy assessors and risk NCC 2022 non-compliance
Underperformance – You may not get the comfort, efficiency, or cost savings promised
If you’re aiming for a 7-star home or just want a cooler, more efficient garage, using verified R-values is essential.
ThermaDoor Premium’s independently calculated R-values are specifically for use on metal sectional or tilt garage doors.
Developed by licensed builder Peter Hinton (45+ years in the building industry), it was purpose-made for Australian homes and climates.
R-values calculated for garage doors: R1.48 (winter) / R1.43 (summer)
Designed for garage doors, not repurposed wall or roof products
Supports NCC 2022 energy requirements for new home builds and significant renovations.
Supports accurate NatHERS energy ratings
Australian made and trusted by professionals
If you’re serious about performance and compliance, ThermaDoor is the smart investment.
Before committing to any garage door insulation, ask this question:
“Has this products R-value been determined specifically for garage doors?”
If the supplier can’t show independent reports, the R-value probably isn’t specific for garage doors. That means you could end up with:
Poor thermal performance
Incorrect NatHERS input
Lost star ratings
A garage that still feels like an oven (or a fridge)
ThermaDoor Premium gives you certainty. With calculated performance, you can insulate confidently – knowing it’s compliant, effective, and engineered to perform.
Don’t settle for guesswork or marketing spin. When it comes to garage door insulation, determined performance is what counts.
Choose ThermaDoor Premium—the only product in Australia with calculated R-values specific to the garage door.
At ThermaDoor we want you to do your own research and come back to us with the hard questions. To help you along, we have developed a Buyers Checklist so you are supported to ask the right questions when considering investing in garage door insulation.
Read our technical article Best R-Value for Garage Door Insulation Australia (Explained) to provide context to the Buyers Checklist
The best R-value depends on your climate and garage type, but anything over 1.3 tested for garage doors is a good benchmark.
ThermaDoor Premium offers 1.48 (winter) / 1.43 (summer).
Because many use R-values tested for walls or roofs – not garage doors.
Without relevant calculations, those values may not reflect real world performance.
Yes – if you choose verified products. It can improve indoor comfort, reduce energy use, and help you meet 7-star energy targets under NCC 2022 for new builds.
Got more questions? See our Frequently Asked Questions
Call, text, or send an enquiry below to see if we have an installer in your area.
