Garage door insulation

[Pata]

What is the best insulation to use to insulate a metal panel lift garage door facing east to protect from the heat?  I have looked at all the options and remain totally confused

[JacobZ]

Hi @Pata,

A warm welcome to the Bunnings Workshop community and thank you for your question.

The GI Building Sciences 10mm 0.5 x 24m 12m² Reflecta Garage Door Insulation is the best product I am aware of for this application. It is easy to install, with only a few simple steps that are detailed in the Install Guide. You'll need some scissors to cut the insulation and some roof and gutter silicone and a caulking gun to stick it in place.

It helps to regulate temperature by reducing heat transfer, making garages more comfortable in both hot and cold weather. The material also provides added benefits like noise reduction and improved energy efficiency for adjacent spaces.

If you have any particular questions about this product, please let me know and I'll answer them to the best of my ability.

Jacob

[Pata]

Thanks for your reply Jacob.  I have also looked at the Kingspan Air Cell Retroshield which seems to have a better R value which is why I can't make up my mind.  I there a reason you have suggested the GDI product as a better option?  Thank you

[JacobZ]

Hi @Pata,

The main reason I'd recommend the GDI product over the Kingspan product is that it was designed for this exact purpose with a specific method of installation outlined by the manufacturer and a 15-year guarantee when this installation method is followed.

The Kingspan product is a more general-use reflective insulation product, which will likely still work, but it wasn't designed with this exact purpose in mind.

For simplicity's sake, it is usually best to go with a product that has a well-defined installation method that you can follow along with.

Let me know if you have any further questions.

Jacob

A note for our New Zealand readers - Unfortunately, the use of foil insulation products has been banned in New Zealand.