Most people accept the garage that comes with their house as is. What many don’t realize is that the huge costs they’re bearing to heat the house are almost always exacerbated by the fact that the garage is sucking heat out of the adjoining rooms because it’s not insulated. But insulating the garage has benefits that extend beyond just saving you money on your energy bills. An insulated garage can become part of the active space of the home where you can set up a workshop for yourself. And a warmer garage also makes for a better storage space.

Garage Door Insulation

Garage Insulation Advice from Your Favorite Garage Door Repair Company

While we’re known for garage door repair in Boulder CO, the topic of insulating the garage is one our customers bring up frequently. Insulating the garage is an easy way to start saving on your energy bills, increase the usable space of the house, make the process of entering and exiting the garage more comfortable while creating more high quality storage space and increasing your home’s value at the same time. Here are some tips on making sure the insulation process is successful.

Types of Insulation

A lot of times when we’re called in to do garage door repair in Loveland we get asked which type of garage insulation is best. It depends. There are 2 types of insulation you can use in your garage: blown insulation or insulation that you unroll between the wall joists. Rolled insulation is further broken down into standard fiberglass and rock wool. If fireproofing is an important goal of yours you’ll want to choose rock wool over fiberglass. Whether you choose blown or rolled insulation will depend in large part on the state of the walls in the garage. If they’re already covered in drywall it doesn’t make a lot of sense to bother ripping out the drywall just to roll in some insulation. In such cases blown insulation should do the trick. If on the other hand your garage walls are unfinished with exposed joists then rolled insulation is your answer. Of course the rolled insulation will work better if you make sure to cover it with drywall when you’re done.

Air Sealing the Walls

You may also want to consider air sealing your walls. Especially if they are unfinished. Air sealing the walls will make the insulation that much more effective. Air sealing entails using caulk and other readily available sealants to plug any cracks or holes in the walls. Most of these occur around pipes and wiring that run through the wall. The process isn’t difficult but it needs to be done before you install the rolled insulation. And once everything is in place it’s imperative that you add the aforementioned drywall over the top and seal that as well. If it’s leaky you’ll want to fix the garage door too.

Installing the Insulation Properly

When adding rolled insulation to interior walls you want the paper side of the insulation to face you while you work. In the garage however, you’ll want to make sure the fuzzy side of the insulation - whether it’s fiberglass or rock wool - is facing you when you install it. That’s because the walls in the garage (even those shared by adjoining rooms) are exterior walls. So the insulation needs to face the environment.

To install blown insulation into finished walls you’ll need to create access holes in the walls. Make these using a hole saw and make sure they’re between the joists, near the top of the wall. You’ll also need to rent an insulation blower with a hose to get the insulation into the walls. It might require more than one person to do this effectively so keep that in mind. Don’t forget to seal the access holes when you’re done.

Insulating Above the Ceiling

Some garages have a drop ceiling with a crawl space above that’s often used for storage. Often times this ceiling is uninsulated as is the roof at the top of the crawl space. Since heat rises it’s a good idea to insulate both the drop ceiling and the roof if at all possible. If you don’t have a drop ceiling you should insulate the roof of the garage if it isn’t already insulated


As the area’s leading garage door repair experts we see all types of garages, from those that have been finished to the point where they’re practically livable to those that are basically just a few roughed in walls and a garage door. Many would benefit mightily from being insulated. If you would like some further advice on garage insulation or you’re in need of garage door opener repair or Broomfield garage door repair give us a call and speak to one of our highly trained garage door repair pros.