13/04/2026
Garage Door Insulation for Winter – Keep the Cold Out
With winter approaching in Canterbury, many homeowners start noticing how cold their garage becomes — and how that cold air can affect the rest of the house.
If your garage is attached to your home, an uninsulated garage door can allow cold air to transfer inside, making nearby rooms harder to heat and less comfortable.
At ReDoors, we’re seeing more demand for garage door insulation in Christchurch, Selwyn, and Waimakariri — and it’s easy to see why.
Why insulate your garage door?
Many garage doors have little to no insulation. Improving your garage door insulation can:
Reduce cold air entering your home
Keep your garage warmer in winter
Make the space more usable (workshop, storage, gym)
Improve overall energy efficiency
Even small upgrades, like insulation panels or new weather seals, can make a noticeable difference.
Your options
• Insulation for existing garage doors
A cost-effective way to improve thermal performance without replacing the door.
• Garage door seals and servicing
Stopping drafts around the door is just as important as insulation. Servicing your door and correctly setting the limits ensures it closes properly and seals effectively.
Is it worth it?
In most cases — yes.
Garage door insulation won’t turn your garage into a heated room, but it will take the edge off the cold and help protect your home from heat loss.
