Insulating the Shop

There is a saying here in Arkansas, if you are not happy with the weather, stick around for 15 minutes, it will change. We get some 95-100 degree days here in the summer and some nice single digits degree days in the winter. Working out of our one car garage for a shop is tough during those extreme temps. So for an early Christmas present to myself, I insulated the shop.

With the garage attached to the house, one wall is already insulated. That leaves two walls and the wall with the garage door to insulate. I decided to blow in insulation behind the drywall and into the ceiling. This would be the quickest and easiest way to insulate the walls and ceiling.

Insulating the shop has been on my to-do list for a long time. I started by cutting 5″ holes in the top of the drywall. I used a 5″ hole saw. I located the studs and tried to center the hole in each space between the studs.





Not pictured is the wall with the garage door. It is a 12′ wide wall with a 9′ garage door. There were only two holes needed on the wall, one on each of the garage door. The space above the garage door did not have any empty space that needed insulation behind the drywall.

I saved the drywall circles that were cut out with the hole saw. I would reuse them later.


If you have ever used a blown-in insulation machine, you know it is a two person operation. So I had to figure out a way to do this solo. What I did was cut a hardboard “holder” for the end of the hose that would go into each hole in the drywall. That way I could temporarily screw the hardboard holder into drywall, fill each space between the studs then move to the next hole. A picture will explain this better.


The hose was about 3″. It was easy to tell when the space behind the drywall was full. This way I would turn the machine on/off and make sure it was loaded with blown-in insulation. This was slower than it would have been with another person, but it worked well.

insulating the shop

Then I moved into the attic. I did get my wife to load the machine while I blew the insulation into the attic. Talk about a good wife. 🙂 Once all the insulation was blown in it was time to plug the holes.

I cut a bunch of 7″ long by 1/2″ wide strips out of some scrap plywood. I would use these to attach the drywall circles back into the holes. Once that was done, I mudded the holes. I ended up using drywall tape after the first couple of holes.


Here is how the strips were attached. I put a screw into each end. Then a couple of screws in the drywall circles. There may be an easier way, but this worked for me.





I also put some weather stripping around the edge of the garage door to start sealing that up. All that is left now is to insulate the garage door with some foam insulation panels in the door.

My shop was a mess afterwords. But it is all cleaned up now. And I can already tell a difference in how it holds in the heat. Once the garage door is fully insulated, it will be even better.

insulating the shop

Insulating my shop/garage was an early Christmas present to myself. I wish I would have done this years ago. I hope this has helped with you insulating the shop you work in.

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