Best Garage Door Insulation Kit – Buyer’s Guide

best garage door insulation kitA garage provides space for homeowners to undertake various woodwork projects, work on your car, or simply workout. However, when the sun is up in the sky in summer or the snow is falling in winter, the temperatures may be too high or too low, thus making it difficult to work efficiently.

As such, you need to get a garage door insulation kit to ensure the radiant heat is reflected rather than transferred and allowed to flow. This will allow to cool the space when it’s hot and warm it when it’s cold. This will end up creating a super comfortable environment that is conducive for any kind of work.

Checkout our list of the 5 best garage door insulation kits in the market. Our selection criteria included the user reviews, ratings, unique features, performance, what is included in the kit, and the dimensions.

Our List of Best Garage Door Insulation Kit (2019)

Product Materials Size, in R-value Type
Owens Corning 500824
(Editor’s Choice)
12 x 16 x 24 8 Panels Check Price
Matador Polystyrene 2 x 54 x 1.2 4.8 Panels Check Price
Reflectix BP24050 Polyethylene,
aluminum foil
14 x 14 x 24 no Roll Check Price
Reach Barrier 3009 25 x 13.4 x 13.2 no Pre-Cut Panels Check Price
US Energy NASATECH Foam Core,
4 Rolls of 18ft x 24 8 Pre-Cut Panels Check Price

Owens Corning 500824 Garage Door Insulation Kit – Best for Metal Garage Door

Owens Corning Insulation

This is the best garage door insulation kit because it has all it takes to enhance the comfort in your garage. It features 8 durable R-8 fiberglass insulation panels that are made with a robust white vinyl facing that can be easily washed. The kit is designed with fastening system that gives a fast and secure way of holding all the panels in place.

As a precaution, use a mild detergent when washing the lean-able vinyl surface to avoid damaging it.

This garage door insulation kit is made with a flexor material so it is able to resist denting. It measures 12 x 16 x 24-inch in dimensions that makes it quiet compact for its big performance.

One kit is able to insulate a one-car garage door that measures about 9 feet in width. It gives a perfect fit to the protruding part of the door. This makes its thermal performance unique and impressive because it is 5 times superior when it is compared to an insulated door.

Based on the statistics of the standard human listening studies, this garage door insulation system will reduce the noise level emitted from the room by at least 20 percent when installed.

If you are installing the kit yourself, then we would recommend that you get a tape measure, a utility knife, a straight edge, and a marker.

Owens Corning 500824 Garage Door Insulation Kit is highly recommended to users with insulated metal garage doors.


  • Super easy to install
  • Speedy installation (at most 1 hour)
  • Washable vinyl surface


  • Panels cannot be painted
  • Some users feel that the two pins for attaching the insulation material are inadequate and you may have to use glue

Matador Garage Door Insulation Kit – Best for Cold Weather

Matador Garage Door Insulation Kit

Each Atlas EPS Matador Garage Door Insulation Kit comes with 8 boards. For double metal doors (16 x 18inch), you need to get 2 kits so you can have 16 boards. The reflective value of this insulation at 75°F is 4.8, and it only applies to the 1¼-inch thick panels.

The kit only weighs 10 pounds so you can handle it with ease, especially when it comes to installation.

This insulation panels is ideal for all kinds of weather because it will warm the garage during the winter and cool it during the summer. As such, it is recommended for users looking to cut on their heating and cooling costs. At 75°F, the insulation material has a reflective value of 4.8.

If you want a garage door insulation kit that will help your garage space look stylish, then this is the right brand for you. It has an elegant finish that makes the garage attractive. The surface is made of a bright white material that is readily washable.

Prior to the installation process, you need to get a straight edge, a utility knife, a tape measure, work gloves, and safety goggles.


  • For use on both single (8×9 inch) and double (16×18 inch) metal doors
  • The bright white surface, easy washable
  • Reduces the noise levels


  • Some users feel that the styrofoam material used makes the insulation kit look cheap
  • Need gloves to work

Reflectix BP24050 Bubble Pack Insulation – Best for Hot Climates

Reflectix Bubble Pack Insulation

This insulation pack features a metallic foil surface that will effectively repel heat. This is because it is designed with an air bubble lining that will prevent the transfer of heat in the room. It is ideal for use in crawl spaces in your home, the attic, wall, post, metal buildings as well as frame structures.

Unlike most of its counterparts, this insulation kit is uniquely designed with fiber free material. This renders it lightweight for portability and handling when installing. Furthermore, the material is environmentally safe. To be specific, this insulation kit weighs about 5 pounds for convenience. It features a reflective value of 14.3, which makes it 97 percent reflective.

It is made of 7 layers with two outer layers made of aluminum foil that reflects and hits the heats. Every foil layer is further blended with polyethylene, a material known for its toughness and ability to strengthen the boards. The insulation material has two inner layers with bubble, so that it can resist the passage of heat.

The core layer of this kit is made of polyethylene for extra strength for durability. Two inner layers of bubble pack resist heat flow, while a center layer of polyethylene gives additional strength.


  • Lasting and flexible material
  • Double sided, easy to install
  • Reflects 97% of the heat radiated


  • Double-sided tape may be required to install

Reach Barrier 3009 Garage Door Insulation Kit – Best for Single Car Garage Door

Reach Barrier Insulation

This might just be the best insulation kit in the market because it features the Reach Barrier Reflective Insulation and bubble barrier technology. This innovation is able to reflect 95 percent of the radiant heat, thus helping you to save on energy and utility cost.

You will get 8 panels that are precut and easy to install. These panels are constructed of 5/32 inch Barrier Bubble sandwiched between 2 layers of Reflective Polyethylene.

The polyethylene material is used to enhance the reflective ability of the kit besides improving its durability. This kit is designed as per the new ASTM fire code standards.

It also comes with Acrylic Adhesive one inch square Stick’ms that are easy to use thanks to the simple instructions included. In fact, while installing this product you do not need any tools or protective gear.

This garage door insulation kit only weighs 3.32 pounds so it is easy to carry, handle, and install.


  • New fire codes
  • Reflective polyethylene
  • It is durable and easy to use


  • Some users say that the bubble wrap may come partly deflated
  • Some panels are not the same size

US Energy NASATECH (Pre-Cut for 16 Panel) – Best R-value Reflective Insulation Kit

US Energy NASATECH Insulation Kit

To begin with, this insulation kit has 8 panels that are 1/4-inch thick. It is made from the newly improved super heavy-duty double-sided foam tape that is highly adhesive for efficient holding. It can be effectively used to insulate garage doors that are up to 18 feet tall.

This product is the upgraded version of 5/16 foam core. It will fit a two-car garage door perfectly and will insulate your garage by creating an air pocket that is able to achieve the R-value of 8.

You do not need any special know-how or tools to install this insulation kit. You, therefore, can install it quickly during winter or summer to cut down on the heating and cooling costs respectively.

This insulation kit is 5/16-inch thick, making it the thickest reflective foam core insulation currently available in the market.

It has no fiberglass, carcinogenic, or toxic compounds so it is clean for use.


  • Lightweight and durable
  • It has a clean finish
  • Eco-Friendly and Non-Toxic


  • Some users argue that after just a few years of installation, the insulation loosened due to the poor quality tape.

Garage Door Insulation Kit – Buyer’s Guide

For people who are looking to insulate their single or double car garage doors to make their work spaces more comfortable, you need a reflective insulation kit. When buying it, you should consider its reflective value, material used, weight, and its number of panels. You should also check whether the panels are pre-cut and consider their size.

Type of insulation used

  • Reflective Foils
    The reflective foils are sold in rolls and they create air pockets that in turn regulate the temperature in the insulated room. Most reflective insulation kits feature an R6 value. This ensures that the thermal performance is maintained at the top. However, you need to consider the quality of the adhesives because they will determine how durable the installation will be. The reflective foils are the cheapest type of insulations.
  • Foam
    The foam insulation is mostly obtained from polystyene. The foam insulations are designed as large panels or some sheets. These panels are precut so they can fit the parts of the door just as it is designed. The foam insulations have a reflective value higher than that of the reflective foams.
  • DIY Foam Kit
    Like the foam insulation, the DIY foam kit comes with precut panels. Their reflective value is the best of the three types. If they do not fit the garage door as per its dimensions, you can trim them for a great fit. The DIY foam is easier to install because it normally takes less than one hour.


When choosing insulation for garage doors, many people ignore its weight. If the insulation material is too heavy, it can affect the balance and stability of the garage door opening. This will force you to adjust the spring so that it adequately supports the door.


R-value (reflective value) refers to the measure of thermal resistance. It is the transfer of heat from one point to another. Normally, the heat is from a hot area to a cold one. The efficiency of the insulation kit is determined by the R-value it has. The higher the reflective value, the better the performance of the insulation kit.

The R-value of a garage door insulation kit is influenced by its thickness and density. So, when you go shopping for an insulation kit, make sure to look for the highest reflective value possible.

How Can I Insulate My Garage Door?

You will find some insulation kits with instructions but others don’t. If there is no guideline, please follow these steps:

  1. Obtain the gear you need to insulate the garage door. These include the insulation kit that will fit appropriately on the garage door. As such, you also need a measuring tape to take the required dimensions and a knife that is sharp to make clean cuts.
  2. Measure how wide and tall the garage door is. You need to consider whether the door is wooden or metal. Ensure to cut the panels in the correct measurements and add some extra inches so the door is covered all round. The sheet should be free of holes so there is no heat getting through or out of the garage. Otherwise, the insulation process would be wasted.
  3. Repeat the above steps until all the parts of the garage door are insulated. The final results should be a soundproof, waterproof, and stylish garage door. If it is fully insulated, you will feel the difference in the climate in your garage. During summer, the room should feel cooler while during winter the garage should feel warmer.

What are the benefits of using an insulation kit?

When your garage door is insulated, your home will be more energy efficient than ever. This is because during the winter, for instance, you will not need to use electricity or other source of energy to power the heater. This means that your utility bills will be lower so you can spend your money otherwise. This will help reduce your carbon footprint so you can contribute in the conservation of the environment.

The main benefit that drives the use of insulation kits is their ability to create a microclimate despite the hot or cold weather outside. The aim is to make the environment around the garage as comfortable as possible.


Garage door insulation kits are a great way for you to improve the efficiency in your garage. Your workshop will be more comfortable since the environment will be more conducive than ever. You no longer have to deal with high or low temperatures when you can create an insulated room easily.

When buying the insulation kit, you should decide on the type of insulation you want it to have. We hope that our buying guide will help you pick the most effective insulation kit based on your needs and as per the benefits of each.

You should also look out for the weight of the kit since the lighter it is, the easier it is to handle. What’s more, if the material is too heavy, it will reduce the efficiency of the insulation because the door will lose its balance.

If there is any other brand or content you would like included in this article, please feel free to share with us your thoughts and comments.

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