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.
The garage door insulation air gap is not optional – it’s essential for moisture control, mould prevention, and optimal thermal performance. Maintaining the air gap also extends the life of your garage door and ensures alignment with AS3999 installation standards in Australian homes.
When insulating a garage door, including an air cavity between the metal panel and the insulation isn’t optional – it’s essential. Without it, you risk condensation, mould, and poor energy performance. With it, you gain compliance, durability, and comfort.
Metal garage doors are prone to condensation, especially in cooler or coastal climates. When insulation is glued directly to the panel, moisture gets trapped, creating the perfect environment for mould and rust.
An air gap allows moisture to escape, protecting your garage door and keeping your home healthier.
An air cavity acts as a secondary thermal barrier, slowing down heat transfer through conduction. This simple design feature:
Improves the R-value of your garage door insulation
Keeps your garage cooler in summer and warmer in winter
Helps reduce overall household energy costs
For maximum results, pair an air gap with ThermaDoor Premium garage door insulation, the only purpose-made solution designed and tested for Australian conditions.
Metal garage doors naturally expand and contract with temperature changes. When insulation is glued directly to the door, it can crack, detach, or place stress on the springs and motor.
ThermaDoor’s floating cavity system:
Allows natural door movement
Prevents insulation compression
Reduces long-term wear on your garage door and motor
Some installers glue insulation directly onto garage door panels. While it looks tidy at first, it:
Eliminates the vital air gap
Encourages condensation and mould
Is not aligned with Australian Standards for installation of insulation
Can void your garage door’s manufacturer warranty
This is why ThermaDoor never glues insulation. Our system is designed to preserve a compliant air cavity while ensuring thermal performance and door safety.
ThermaDoor garage door insulation is the original and STILL THE ONLY PURPOSE MADE garage door insulation in Australia. This includes an installation method for both our Premium and Plain range garage door insulation that preserves the important air gap. With ThermaDoor you can relax knowing:
Insulate Smart. Live Better. Choose ThermaDoor – Australia’s original, purpose-built garage door insulation system.
At ThermaDoor we want you to do your own research before investing in garage door insulation and come back to us with the hard questions. To get you started, we have created a Buyers Checklist that will assist you to ask the correct questions when shopping around for garage door insulation.
An air gap prevents condensation, mould, and rust while improving thermal performance. It creates a secondary barrier that helps regulate garage temperature.
Glued insulation traps moisture, encourages mould, reduces thermal efficiency, and can damage the garage door and motor.
ThermaDoor’s floating cavity design maintains a consistent air gap, allowing natural door movement while boosting energy efficiency and protecting against condensation.
This design is also included in our DIY garage door insulation kits.
Call, text, or send an enquiry below to see if we have an installer in your area.
