How to insulate garage wall and door?

[jeremiah]

Our garage gets extremely hot and I want to insulate it by attaching foam / batts to the door and a wall. I'm hoping people can suggest the right materials and techniques.

The garage faces north and west and is totally exposed to sun for most of the day. Above the garage is a balcony (concrete) so that also absorbs heat. The door is a single piece door that folds up and under the ceiling. The south wall is the shared wall with the neighbour's house. 

The garage is single brick except for two columns of doubled brick. I'm hoping I can stick some batts in the spaces between the double brick columns.

 

[___CC]

Hi there, it won’t be used on a regular basis as I’m making it into my office, however I don’t want to cut off access completely, if possible. The garage door faces west and you can’t even touch the door in the afternoon it’s so hot, so you can imagine how hot the garage space is. Looking at all options. Thanks in advance. 

[MitchellMc]

When you say it won't be used on a regular basis, will it be used at all @___CC? You can certainly use the Reflecta garage door insulation on a non-functional door. It's only installed using dabs of silicone, so it can be removed later if you need to start using the door again.

However, in your situation and if you don't need to use the door, I'd be looking at building a temporary stud wall in front of the door, installing insulation batts and cladding with plasterboard or sheeting. A R2.5 batt will provide much better heat reduction, and the wall can still be deconstructed later

Mitchell