Understanding Garage Door Insulation

A garage door without insulation doesn’t do much to protect the inside of your garage from the outside world. Just like insulation is an essential part of your home, so too is garage door insulation. So why not invest in garage door insulation? According to C.H.I Overhead Doors, homeowners can save up to 20% on their annual energy bills by insulating their garage door. 

Most homeowners find they don’t understand what garage door insulation can do for their home or even how to understand what the best types of insulation are. In this blog, you will learn the benefits of garage door insulation and how to tell what insulation will work best for you.

Benefits of Garage Door Insulation

Energy Efficiency

Just like home insulation, garage door insulation prevents heat and cold temperatures from escaping. This gives homeowners peace of mind knowing they’ll have the extra money in their pocket at the end of the month when their utility bills are noticeably lower. Garage door insulation is especially beneficial for energy efficiency when you have an attached garage. The temperature of your garage can affect the temperature in your home based on where your garage and home are connected. 

For homeowners who do not have an attached garage, the benefits of an insulated garage door will not benefit the rest of their home as the garage is not attached to the home. It will still provide thermal efficiency to the garage itself. 

Quieter Operation

Nothing is more frustrating than hearing the creaking, rattling, and groaning of a garage door from inside your home. This is especially true for homeowners who have a bedroom near the garage. Homeowners with insulated garage doors don’t have to worry about this. The insulation inside the garage door reinforces its strength and reduces the sounds garage doors tend to make.


As is, garage doors are relatively durable against beatings, but insulated garage doors are more resilient. Insulated garage doors are made to be long-lasting and resistant to various weather elements. If your garage door has not maintained its integrity, seek out a garage door specialist’s service. 

Insulating Your Garage Door

If your garage is attached to your home, it ultimately affects your energy costs. The structural connection between the two sections of your house also creates a thermal link, which is why insulating your garage door becomes essential. 

Rigid Foam Insulation

Insulation Measurements


The R-value of your garage door is used to measure how slow the transmission of heat and cold is. The higher the R-value, the better power of your garage door. The range goes from R-8 to R-32. The optimal R-value is R-16. 

STC Rating

STC ratings measure the effectiveness of soundproofing. For instance, STC ratings consider the garage door’s materials to measure how well sound is suppressed. 

Insulation Materials


This material is the least expensive of the two, making it popular for homeowners looking for an insulated garage door without major cost. The polystyrene panels are placed behind single-layer or double-layer garage doors. Polystyrene provides energy-saving benefits and quiet garage door operation, but it can become bent over time with usage. 


On the other hand, polyurethane has a higher density, making it a better insulator. However, it is the most expensive of the two insulation materials. This insulation type is recommended for homeowners who live in especially hot or cold climates or use their garage door as another living space or primary entrance.

Garage Door Insulation Professionals

Your home can suffer rising energy costs without an effectively insulated garage door. It doesn’t take much to install garage door insulation, but it should be handled by a professional who knows how to do garage door repair service correctly. Thunder Garage Door & Locksmith Services is here to help. Contact us on our website for a free quote today!