Best Garage Door Insulation For Hot Climates

Best Garage Door Insulation For Hot Climates

Hot climates are not a time to leave your house to heat. Insulating your garage door is the right step to protect your house from hot air and escape from cold air. A hot climate comes with a lot of discomfort and cooling expenses. Here are the best garage door insulation for hot climates.

NASA TECH Reflective Garage Door Insulation Kit, Double Bubble Reflective Foil Insulation, and Cellofoam 8 Foam panels Garage Door Insulation Kit are the best garage door insulation for hot climate. Your goal should be to provide comfort, shield, and protect your home from climate change’s physical effects while simultaneously saving costs.

Insulating your garage door is a step towards regulating your house temperature for cold and hot climates. Insulation can boost energy effectiveness and reduce noise effects. You may wonder how to insulate your garage door and what materials are best. This article will provide answers to your many questions. 


Types Of Garage Door Insulation

You must know the types of garage door insulation materials available to make a good choice suitable for your garage door. Also, you need to consider the make-up of each material, such as the R-value, the resistance capacity of noise, pests, and moisture. Also, the size, weight, and material application should be considered. 

The R-value of an insulation material determines the amount of heat it can conduct. Higher R-values indicate a higher resistance to heat conductivity. For thermal efficiency, you should look for materials with high R-values, say from 7 and above.

Below is a list of garage door insulation. 


Fiberglass is a common material used for insulation. It is most commonly used because it is cheap, long-lasting, has a high R-value of over 7, and is easy to use. It can fit any door size. It has proven to be effective during hot climates. Unfortunately, it is not resistant to moisture. It can be easily affected by environmental factors.  


Cellulose is a type of insulation derived from natural materials. It can be recycled into products like cardboard to be used for insulation. Cellulose materials are treated with fire-resistant chemicals. They are easy to use and mostly used to fill holes and cavities; however, they are costly and can only be used on drywalls. 

Rigid Foam

Rigid foam is an insulation material suitable for thin walls and garage doors. It is a high-quality and less expensive insulation material. Rigid foams are resistant to noise and are usually boards. They are highly resistant to moisture and will keep your garage cool or warm, depending on the climate; they are an excellent option for insulation. 

Spray Foam

Another type of foam insulation is spray foam. Spray foams are expensive premium materials that save energy and will require experts for installations. The R-value of the insulation material is high. Although it is costly, it is not susceptible to moisture and pest. 

Furthermore, the material prevents the penetration or escape of air or other substances. I advise hiring an expert for the installation.

Reflective Insulation

A suitable material for the hot climate is reflective insulation. A DIYer can easily install it on their door. Reflective materials have double layers like aluminum foil and air space materials like bubble wrap. Primarily, they prevent the sun’s radiation from entering the garage. 

6 Best Garage Door Insulation For Hot Climates

The hot climate is here! The temperatures will be high, and your garage will get hot if you do not insulate its door. 

Heat transfer occurs through conduction, convection, or radiation. For garage doors, heat is mostly transferred by radiation, that is, heat from the sun getting to the garage through the door’s opening. Listed below are the top garage door insulation for hot climates.

1. NASA TECH Reflective Garage Door Insulation Kit

NASA TECH reflective material is a high-quality insulation material with a high R-value of 8.0. The insulation box consists of heavy-duty double-sided tape, a razor, and a squeegee. The US Energy Product has four rolls of 21-inch x 18ft white/foil foam insulation. 


  • Size: 18ft wide x 8ft high
  • R-value: 8.0
  • Weight: 10.63 pounds
  • Instructions: yes


  • Easy installation
  • High R-value
  • The instructions aid installation.

2. Double Bubble Reflective Foil Insulation

The US Energy Products is an all-climate insulation material with unique features such as a double layer of reflective metal aluminum film, 99.97 percent radiant barrier, lightweight, and easy to install. Unlike other US Energy products, this insulation material does not have a high R-value. However, it has high-resistant to pests, mold, moisture, and 


  • Size: 48 inches x 10 ft roll
  • Weight: 4.4 pounds


  • It is easy to install
  • Energy efficient 
  • Not difficult to cut 
  • Long-lasting
  • Highly resistant to moisture


  • No R-value

3. Reflectix Bubble Pack Insulation

The Reflectix garage door insulation pack is a suitable garage door insulation material for hot climates. The product is energy efficient and very easy to install. It is easy to cut and compatible with all kinds of garage doors, including different fitting sizes of garage door panels. 


  • Weight: 1.6 ounces
  • Size: 14 x 14 x 24 inches
  • Heat repellant: Yes; its surface is made up of metallic foil 


  • Energy efficient 
  • It fits all kinds of garage door
  • Repels heat transfer


  • The surface is not appealing
  • It does not come with adhesive.

4. Commercial & Home Garage Door Insulation Kit

The garage door insulation kit is suitable for commercial and home use. It is a thick, lightweight reflective insulation material. This reflective material makes installation easy because it is easy to cut and bend. The material is harmless and safe for the environment. Its reflective radiant heat transfer is 97%. 

This material is hot climate efficient. It is suitable for use on items or places like livestock drinking troughs, automobile doors, toy haulers, large windshields, water heaters, tires, and tents.


  • Size: 13’H x 12’L
  • Thickness: 5/16 inch thick
  • Waterproof: Yes


  • Easy to cut and apply
  • Serves multiple purposes
  • Thick 
  • High quality

5. Cellofoam 8 Foam panels Garage Door Insulation Kit

The Cellofoam brand is an 8-panel insulation garage door material specifically made to provide comfort and ease during hot climates. The material is durable and requires less time for installation. Although it has a low R-value of 4.8%, it is an affordable insulation kit for garage doors. 


  • Colour: white
  • Product dimension: 54 x 20 x1.25 inches
  • Each panel dimension: 2o x 54 x 1 ½ inches


  • Affordable
  • Application requires less time
  • It can be used for both garage doors and car
  • Comes with adhesive


  • It has a low R-value of 4.8
  • It cannot be used for a wide garage door. 
  • Use is limited to only garage doors and cars.

6. US Energy Products Garage Door Insulation Kit

This US Energy product is a foil-finish insulation kit for garage doors. It is reflective foam insulation with two adhesive tape pieces, a razor knife, and a squeegee; it is a fiberglass material and weighs about 2 pounds. 

The insulation kit is suitable for a two-car garage door. The foil surface protects against air leakage and penetration. This material will cover a wide garage door, about 120 sq ft.


  • Dimension: 24 x 12 x 12 
  • Material: Fiberglass
  • Weight: 2 pounds


  • Wide
  • Adhesive
  • Lightweight

Why Should I Insulate My Garage Door?

There are many reasons you should insulate your garage door, especially if your garage door is the entrance to other rooms like the gym, library, or playground. Insulated doors work both in hot and cold climates. It makes your garage door more durable and provides comfort and safety. 

You can buy pre-insulated doors. However, you can still insulate your existing garage doors. Below are reasons you should insulate your garage door. 

  • Energy Effectiveness

Uninsulated doors contribute to a waste of home energy. You put on your cooling system during a hot climate to regulate the garage. The US EIA (Energy Information Administration) reports that about 15% of home energy is used to power cooling systems. 

They also reported that around 15.9% of home energy is used to run heating systems. Without sealing or insulating the door, hot or cold air will escape resulting in energy loss. The energy you use to power air conditioners or heaters will be saved if you insulate the garage doors and windows. 

Home energy is not free. Insulating your garage door will result in maximizing energy. 

  • Protects your door

Insulated garage doors are stronger than non-insulated ones because they are covered by extra sheets of insulation material – aluminum or steel. These doors do not get destroyed, dent, or rust easily. 

The extra layers insulating garage doors can protect the door from adverse weather conditions. 

  • Soundproof 

Insulated garage doors act as soundproof and protect against noise pollution. Insulating materials are thick; they block noise from disturbing your garage activities. Members of your household will enjoy a quiet environment.  

  • Safety 

Non-insulated doors are more vulnerable to attack by intruders because they are not strong, unlike insulated doors that are made with additional materials to protect the door further. 

Do you want to buy a pre-insulated garage door or insulate your existing one? Think about the safety and improved security you will enjoy. 

In addition, you can also install security cameras in your garage to improve security. Fortunately, some cameras can alert you of suspicious activities, and you can also view live happenings. You should get that kind of camera for your garage door. 

  • Ease 

Are you thinking about why you should insulate your garage door? I have a strong reason for you – EASE. 

In essence, you want to insulate your garage door because it causes temperature fluctuations due to hot and cold air leakage. A stable temperature brings comfort. If your garage has a workshop, extreme temperatures will make you unproductive. 

A moderate temperature will translate to ease and comfort, resulting in productivity. 

  • Reduces Utility Bills

You should insulate your garage door because you pay less for electricity after saving energy. House Owners who are yet to insulate their garage door will pay high electricity bills because of air leakage from their door. 

Insulation will reduce the need to constantly cool or warm your garage because the required air keeps the place comfortable, reducing the need to pay bills.

Best Garage Door Insulation For Hot Climates

Will Insulating My Garage Door Keep It Cooler?

Insulating your garage door during hot climates will be one of the rewarding investments you will be making. Insulation cools your garage. Non-insulated garage doors are not advisable during hot climates because cold air generated from the air conditioner will leak through the door. 

Non-insulated garage doors allow leakage of cold air and the penetration of hot air. You will spend more money on utility bills to make your garage comfortable if you are yet to insulate your door. 

Insulating your garage door not only retains your desired garage temperature but also blocks noise, increases the door’s durability, and makes your door stronger and safer.

Is Garage Door Insulation Worth It In Hot Climates?

Garage door insulation is very much worth it during hot climates. Insulating your garage door is a high-yielding project you should embark on. Aside from making your garage cold during hot weather, insulation increases the aesthetic value of your garage, acts as a soundproof, increases your door’s lifespan, improves security, and increases your garage value. 

Working during hot temperatures can be unconducive. If your workshop or any other activity room is close to your garage, you should consider insulating your garage door so that activities can go smoothly.


Insulating your garage door during the hot climate is a profitable venture that will increase your garage’s worth and reduce utility bills. Although insulation is expensive, depending on your insulation kits and material, the benefits are enormous, and you will never regret it. 

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