Best Garage Door Insulation Kits – 2021 Buyer’s Guide

| Last Updated: July 27, 2021

Often homeowners look at their utility bills and get a big surprise when it is higher than expected. Your house might be well insulated in the walls and have high-efficiency windows, but one of the places where heat can enter or escape is via the garage.

If you want to get your electricity bills back under control and stop your money from leaking out the garage, it may be time to get some insulation on those garage doors.

In this article, we’ll help you learn what to avoid and what to look for when choosing the right garage door insulation kit.

Comparison of the Best Garage Door Insulation Kits

IMAGEPRODUCT
  • Insulation kit that doesn’t need pins, glues, or tapes for installation
  • Comes with an easily washable and bright white surface
  • Can fit most 8 and 9-foot pan-style garage doors
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  • Kit promises five times better thermal performance than a non-insulated door
  • Installation doesn’t take more than an hour
  • Can reduce perceived noise level by up to 20 percent
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  • Energy-efficient unit that can reduce your yearly energy costs by up to 20%
  • One side has a white vinyl finish while other has a reflective finish
  • Comes with sound reduction technology that can reduce radiant heat by up to 95%
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  • Features two reflective surfaces, both made using high-quality material
  • Has a vapor barrier that’s mold, moisture, and humidity resistant
  • Reflects up to 97% of radiant heat, making it highly effective
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  • Can reduce the temperature inside the garage by up to 20 degrees
  • Ability to reflect up to 97% of radiant heat, keeping the place cool
  • ASTM certified and meets all the fire codes
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Choosing a Garage Door Insulation Kit

When selecting your garage door insulation material, be mindful of a few things.

Weight

Do not use insulation that will greatly increase the weight of your garage doors, as the extra weight may affect the operation of your door. You may need to contact a garage door installation professional to check the operation of the door after you install the insulation.

R-Value

Photo credit: toyotamotorhome.org

The R-value of a material is the rating that indicates its insulating effectiveness. Try to obtain material of the greatest R-value that you can fit inside your garage door panels.

Note: You should never use spray-in insulation or fiberglass insulation, as they aren’t suitable for use in garage doors. Also avoid placing insulation over the springs of your garage door, as doing so may prevent you from opening or closing the door.

Reviews of the Best Garage Door Insulation Kit

Insulation kits for garage doors need to have a sufficient R-Value, fit the door perfectly, not affect the door’s weight or functionality, and most importantly, keep the garage cool in summer and warm in the winter, to help lower your energy costs. Let’s take a look at our top picks:

Best Overall

Matador Garage Door Insulation Kit

Matador SGDIK001 Garage Door Insulation, Large, White

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Review

The Matador insulation kit consists of white styrofoam and will keep garages warm in winter, and cool in summer.

It includes eight boards for a seven-foot-tall garage door and fits doors with a width of eight to nine feet. This kit will insulate up to four garage door panels. You can install it yourself without any special tools required. It has a bright white color, and the surface is easily washable. It also offers some sound protection.

Bottom Line

This is a decent option for garage doors that are eight to nine feet wide and for garages that need moderate insulation.

Pros

Looks Attractive and Neat

Bright White, Easy to Wash

Simple Installation Requires no Tools

Cons

Doesn’t Work for Doors with More than Four Panels

In Some Cases, it Does Not Make Much Difference in Heat Insulation

Runner-up

Owens Corning 500824 Garage Door Insulation Kit

Owens Corning Garage Door Insulation Kit

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Review

The Corning insulation kit is designed for use on insulated metal garage doors and fits neatly into the exposed channel of the door. It provides five times better thermal performance compared to other insulated doors and offers a 20 percent reduction in noise.

You can install this in less than one hour and all you need for installation is a tape measure, utility knife, straight edge, and a marker.

Bottom Line

This is an effective, attractive looking insulation kit for your garage which will add some weight to the door, so check that your door’s motor can withstand the added weight.

Pros

Neat, Clean Look

Cools Down Your Garage

Installs in Less than an Hour

Can be Cleaned with Mild Detergent

Cons

Adds Weight to Your Garage Door

Included Pins do not Securely Hold the Panels-Additional Duct Tape is Required

Best for the Money

NASA TECH Garage Door Insulation Kit

NASA TECH White Reflective Foam Core 2 Car Garage Door Insulation Kit 16FT (WIDE) x 8FT (HIGH) R Value 8.0 Made in USA New and Improved Heavy Duty Double Sided Tape (ALSO FITS 16X7)

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Review

The NASA Tech reflective white insulation kit has a white vinyl finish on one side and a reflective finish on the other. It is designed for doors with four panels, but can also accommodate doors with five panels if requested by the buyer.

Once properly installed, the kit can reduce annual energy costs by 20% or more, while radiant heat is reduced by 95% or more. This product is made in the U.S.A. and comes with easy to install instructions and tools such as heavy-duty double-sided tape, a squeegee, and a razor.

Bottom Line

This high-quality insulation kit comes in both four and five-panel options and can even be customized for your door. It will reduce your energy load by a significant margin and is made in the U.S.A., so you can buy without hesitation.

Pros

Looks Neat and Clean

Makes a Significant Temperature Difference

Cons

Installation Takes Two people Around Two hours

SmartGARAGE- Reflective Garage Door Insulation Kit

SmartGARAGE- Reflective Garage Door Insulation Kit 2 car - 18'W x 7'H (Reflective/Reflective)

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Review

This high R-value insulation kit will fit any two car garage door and reduce the temperature inside to a comfortable level. It will also reduce heat loss through the garage and keep it moderately warm during winter. It is easy to install and gives a very clean, finished look to your garage door.

Bottom Line

Get this insulation kit if you’re looking for a lightweight kit that won’t add much weight to your door and also will provide a clean, neat finish to the door.

Pros

High R-Value

Looks Good After Installation

Adds Less than Five Pounds of Weight to Your Garage Door Won’t Affect Your Current Motor

Cons

None

US Energy Products Two Car Garage Door Insulation Kit

US Energy Products 2 Car Two Car Garage Door Insulation Kit (16'x7' or 16'x8') (Foil Finish) Includes: Reflective Foam Core Insulation (120 sq ft), Razor Knife, Squeegee, Double Adhesive Tape.

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Review

The insulation kit from MWS is meant to be lightweight enough to not affect your current garage door opener and remote and adds less than five pounds to the weight of the door. It is meant to be installed on two car garage doors, but single car door kits are also available.

The kit includes ESP Low-E® Reflective Foam Core Insulation (120 sq ft), a razor knife, squeegee, and double adhesive tape.

The kit will reflect radiant heat, increase the R-value of your garage door, and reduce drafts between panels. Instructions are included with images to make installation quick and easy.

The product is waterproof and easy to clean if needed.

Bottom Line

This waterproof, easy to clean, and effective insulation kit will help you achieve lower heating bills and also make working in the garage a lot more comfortable.

Pros

Lightweight

Easy to Install

No Fibers or VOCs

Effectively Lowers the Temperature Inside the Garage in the Summer

Cons

None

Types of Garage Door Insulation Kits

When it comes to garage insulation, there are three main types: pane insulation, reflective foil insulation, and polystyrene foam. While the material you eventually use is up to you, we recommend getting an insulation kit that contains instructions, tools, and everything you need to set up the insulation. Plus it will be for most garage doors so you won’t have issues with size.

Here’s a brief overview of each type of insulation material:

Reflective Foil

While not very visually appealing, reflective foil insulation is effective at keeping heat out in the summer. It is sold in rolls and the total thickness of the material is around an inch and a half.

It is available in both single foil and double foil insulation, and the material consists of a layer (or two layers, in the case of double foil) of polyethylene foam between two films of aluminum foil.

Polystyrene Foam

Polystyrene foam insulation is a better insulator than reflective foil but offers less flexibility than reflective foil. Instead, it is sold in large sheets which need to be cut to fit in the panels of your garage door.

Panel Kits

Panel kits include about 8 pre-cut fiberglass or plastic laminated polystyrene panels which fit inside the channels of your garage door frame.

Polystyrene offers higher insulation than fiberglass panels, but are less water and mold resistant. Both options are easy to install and look good, so choose this option if good looks are important.

Benefits of Installing a Garage Door Insulation Kit

Insulating your garage door is a good idea if you want to reduce your utility bills. Besides making your garage more livable and comfortable, it also reduces the noise inside from traffic or other external sources. Imagine being able to relax, work, and enjoy the privacy of your garage without any unwanted noises disturbing you.

Often, people like to work on their cars or other projects in the garage, but in extreme heat or cold, it becomes uncomfortable to do so, and insulated garage doors can go a long way toward alleviating this problem.

As mentioned earlier, in winter, heat will leak through any uninsulated areas of your house to the cooler outdoors, so insulating the garage door will help reduce this loss of heat.

In case your garage door isn’t currently insulated, you can insulate it yourself. It is quite easy to install an insulation kit for your garage door and it won’t take long.

Conclusion

It is clear from the information shared in this article that garages can be a source of increased thermal load on your home, so it makes sense to block the heat transfer and also make the garage more comfortable by insulating your garage doors.

To effectively reduce your utility bills, you might consider some of the excellent insulation kits out there, and a good place to get started is this list of top picks we’ve compiled for you.

People Also Ask

Garage door insulation kits are essential for making sure that your door is correctly installed so that it keeps your area insulated in the best manner. However, before buying a kit, you might find yourself asking these questions. Check these out along with the answers that can help you out.

What is a Good R-Value for a Garage Door?

The R value for the maximum efficiency for a garage door depends on the weather conditions. If the garage is heated or insulated, the minimum R value should be at least 11. In other cases, the R value should lie between 14 and 16.

Do I Really Need an Insulated Garage Door?

While having an insulated garage door isn’t really a necessity, it comes with its set of benefits that might compel you to buy one. For instance, they help in saving energy by preventing the transfer of cold air from the garage to other places in your house. Similarly, insulated doors are more durable and quieter.

How Do You Install a Garage Door Insulation Kit?

To install your garage door insulation kit, follow these steps:

1. Vacuum off the door to ensure it’s clean.

2. Make the required measurements for the clips and make the required markings. You can find these in the instruction manual that comes along with your kit.

3. Now place the adhesive to the marks you made in the second step. The adhesive will come in the kit and are extremely sticky, so be careful.

4. The next step is to peel the protective paper off the adhesive and put the alligator clips on.

5. Add the insulation panels, making sure they are tucked in from the corners.

6. Using a knife, cut out an x in the insulation panel to bring out the alligator clip.

7. Pop the other clip as well. You’ll hear a click that will signal that you’ve done it right.



My name is Bob Wells and I am a retired HVAC tech from Washington state. I am currently retired and no longer do much with HVAC, however, I feel like I have a lot of knowledge in the subject and I wanted to create a website where I could talk about what I've learned and help upcoming HVAC techs. Find more info about me and HVAC Training 101.