Insulating a built-in garage

[mattlikesbikes]

The garage on my house is fully built in. It shares one wall with the living room, one wall with the entryway/stairs, and two outside walls.

The outside of the house is red brick which gets rather hot in the sun. The exterior walls are insulated, between the bricks and the drywall. I'm not sure about the interior walls.

So any thoughts on insulating the garage door? The garage is not conditioned and gets rather warm. I don't plan to condition the space, but I do want to keep the garage from warming the rest of the house.

I was thinking I could insulate the garage door and maybe the ceiling above the garage, which I can access through the attic.

Lastly, how about a wall or roof vent fan pulling air out of the garage.

 

[Falcon67]

I just put insulation in my steel door this spring. I used some 1" pink hard foam I got from HD. You slice it with a box cutter and snap it like sheetrock, so it's easy to install. My door is shaded by an outer shed all the time but the insulation made a BIG difference. Note - it'll make the door somewhat heavier so you might have to put a little more tension in the springs depending on the door design and if you have an opener. Mine is an 8' wide manual open, and the additional weight didn't seem enough to bother messing with the lift springs. You do notice the door seems heavier. If it was a 16' door, I'd have to add lift tension.

The rest of the shop (stand alone building) is fully insulated and I could still tell the difference. I use fiberglass batts - R-11 (3 1/2") in the walls and in most of the ceiling. The shop area is 20x24 and I can cool it decently with a 12K BTU window unit mounted in the wall. We're running 100F this week, so I'm glad for any of it LOL.