Your garage may or may not be a room that is used for things other than storing your car, but you could still be spending more than you need to on energy bills.

Insulate your garage well and you could find your energy bills falling considerably.

There are a few garage insulation options on the market and we have devised this guide to help you find the best insulation for garage.

Top 7 Insulations for Garage Comparison Table

PictureNameFixing MethodPriceRating (1-5)
Fixing Method
Rating (1-5)
1. Reflectix BP24050 24-Inch-by-50-Foot Bubble Pack Insulation Various$4.8
2. Matador Garage Door Insulation Kit, Designed for 7 Foot Tall Door up to 9 Feet Wide Snaps into place$$4.6
3. IMP SmartGarage Reflective Garage Door Insulation Kit Double sided tape (provided)$$$$4.4
4. Owens-Corning 500824 Garage Door Insulation Kit Clips (provided)$$4.5
5. Reach Barrier 3009 Garage Door Insulation Kit Adhesive Squares (provided)$4.4
6. US Energy Products Two Car Garage Door Insulation Kit Double sided tape (provided)$$$$3.8
7. Ant NASA TECH White Reflective Foam Core 2 Car Garage Door Insulation KitDouble sided tape (provided)$$$$4.4

How to Choose

How effective the material is at insulating is obviously the main factor to take into account when looking at garage door insulation products. Other factors to consider are how easy it is to install and the aesthetic appeal of the product once the installation is complete.

If you’re adding heat to your garage (e.g., during the winter), insulating is the key to efficiency and shifting that warm air to where you want it most. If your garage is cold, adding insulation on at least the ceiling will likely yield noticeable results.

Consider insulating the ceiling before you add heat. Insulating before adding heat will help your air system run efficiently and most efficiently.

Some products are also usable as insulation in other applications which could be another factor to take into consideration.

Top 3 Best Insulation for Garage Reviews

1. Reflectix BP24050 Bubble Pack Insulation

Reflectix BP24050 bubble pack insulation is suitable for use in garages as well as other rooms of the home. Some people have also used the material for purposes other than insulating the home, such as insulation for food items on long journeys.

It requires no specialized skills to install and is easily fixed into place with tape, glue, staples, or any other method. The lightweight nature of the material means it can be installed with minimal help from other people.

The insulation material is free from fibers and safe to use. It is constructed from several layers of different materials to help provide maximum insulation, helping to reduce your heating bills considerably. It is also flame retardant and fungi and mold resistant for added safety and longevity.

The material’s insulation properties make it ideal for keeping your garage cool in hot climates or keeping warm in cold climates.

Investment in an insulation pack such as this one can result in a noticeable reduction in monthly bills, meaning it isn’t long before you soon see a return on your investment.

If you are looking for easy to install insulation for your garage or any other room in your home, then the Reflectix BP24050 bubble pack insulation could be the best insulation for garage for you.

2. Matador Garage Door Insulation Kit

This product comes in two varieties, one for garage doors 7 feet tall and up to 9 feet wide, and another for garage doors 8 feet tall and up to 9 feet wide. The kit is very easy to install, usually taking less than one hour, and the finish is similar to a factory insulated door even when completed by amateurs.

The surface of the foam is easily washable to help maintain its great appearance and is water-resistant and durable so it looks as good as new even after you have had it installed in your garage for some time.

Not only does the material help to keep your garage warm in cold weather and cool when it’s hot, but it is also very effective at insulating against sound.

The benefits that this insulation kit provides help to make your garage comfortable for other uses in addition to being just a place to store your car when it is not being used.

If you are looking for an insulation kit that is easy to install, effective at heat and sound insulation while also offering aesthetic appeal and ease of maintenance, the Matador garage door insulation kit could be exactly what you need.

3. IMP SmartGarage Reflective Garage Door

The reflective silver color of the SmartGarage reflective garage door insulation kit is aesthetically pleasing and easy to install, helping to ensure a neat and tidy job is done even by amateurs.

The insulating material is held into place against the garage door by a strong double-sided tape which helps to keep the insulation in place long into the future.

The non-toxic material is very effective at insulating, helping to keep your garage at a comfortable temperature regardless of the weather conditions outside.

Some people that used this product found that the instructions were not useful and chose to use their own method of installation, but they still ended up with a product that significantly helped to regulate the temperature of the garage.

If you do have a garage that becomes uncomfortable during certain weather conditions and would like to make it more comfortable, while saving on energy bills at the same time, the SmartGarage reflective garage door insulation kit could well be the best insulation for garage for you.

Frequently Asked Questions

Why is My Garage so Cold?

Cold air will come right in when your garage door isn’t properly sealed. Your garage will lose a lot of heat.

Cold air can find its way in through the seams and then when it hits the warm interior of your garage, it’ll be drawn inside by your heater. Or if you don’t have a heater, it’ll just stay inside and pull the heat right out of your garage.

How Do I Keep My Garage Warm in the Winter?

If you tend to have mild winters, you can keep your garage at a comfortable temperature by simply insulating your garage door and windows, and weather-stripping exterior doors.

The best part about most garage door insulation kits is that they are very easy to install. In fact, most DIY enthusiasts can do it themselves without the help of a contractor or heating expert.

You’ll find that garage door insulation is a simple way to keep your garage comfortable year-round – even if you live in a region that’s well known for its below-freezing temperatures.

How Cold Will an Unheated Garage Get?

The unheated garage typically gets down to the mid 50’s late at night. It can get to 58 degrees Fahrenheit or so for a brief period during the day but is usually in the 70’s.


Your garage could be costing you more than it should. It may not be a room that is used for things other than storing your car, but if you’re spending too much on energy bills each month or heating and cooling an unused space in the winter, then there are ways to save money with insulation.

Insulate well and find yourself saving significantly on monthly expenses. There are many different types of insulation available for garages. We have created this guide to help create the perfect one for your needs.