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

[Nailbag]

Hi @___CC 

The alternative solution that @MitchellMc will also provide far better insulation properties over just having the Relecta products fixed to the door itself.

Last year a friend of ours son has had to return home to live and without a spare bedroom they needed to convert their old single attached garage which also got extremely hot. So, I built a frame as @MitchellMc described behind the roller door with a single door incorporated. The frame was densely insulated and lined each side with OSB board mainly cosmetics. The frame was positioned with around a 100mm space between.

Access was by using a remote to open the roller (we converted it from a manual) then the door within the new wall. This provided added security, weatherproofing and an air gap for that added insulation properties. And of course at some stage in the future a few hours would have the wall dismantled to make it a garage again. There was also quite a bit of additional improvements I had to do internally to make it bedroom habitable including a whirlybird which also made a big difference on hot days.

Nailbag