Buying or upgrading a garage door usually means studying a huge number of specs. While trying to get the perfect setup and materials, some homeowners may overlook the R-value.
Garage door R-value determines how well the door can keep the heat in when it's cold and out when it's hot. Since it's likely the biggest door on your property, insulation should be a priority.
So, what is R-value exactly? Let's discuss the numbers and nuances.
What Is Garage Door R-Value?
Garage door R-value is a number that shows how well your garage door resists (R stands for resistance) heat flow. The higher the R-value, the better the door is at keeping heat in and out.
A garage door with no insulation has a close to zero R value. Steel or aluminum doors without insulation don't do much to protect your garage from outside temperatures. Meanwhile, insulated garage doors are filled with materials like polyurethane foam, which greatly improves the R-value.
What Is a Good Garage Door Insulation R-Value?
A "good" R-value depends on how you use your garage and where you live. Not every home needs the highest number available. However, having some insulation is always better than having none.
R-Value Ranges for Garage Doors
Most garage doors fall into a few common R-value ranges:
- R-0 to R-3: Non-insulated doors
- R-6 to R-9: Basic insulation
- R-10 to R-13: Solid insulation
- R-14 to R-18+: High-performance doors
If your garage is attached to your house, higher R-values can help keep nearby rooms more comfortable.
Climate Zones and Recommended R-Values
In mild climates, a garage door with an R-value of 6 to 9 may be enough. In Georgia, you would likely need a door with an R-value of 10 or higher. If your garage is used as a workspace or has living space above it, you need to invest in better insulation.
Why Does R-Value for My Garage Door Matter?
R-value matters for three reasons:
- It affects your comfort
- It changes your energy bills
- It impacts noise levels
A well-insulated garage door helps maintain the indoor temperature. This can reduce how hard your heating and cooling systems have to work. Meanwhile, better insulation can also help protect items you store in the garage.
How Do I Know the R-Value for My Garage Door?
The easiest way is to check the manufacturer's label or product description. Many garage door manufacturers put the R-value on the label. If the door is already installed and you aren't sure, you can check if it has visible insulation inside the panels. A garage door professional can also help identify it.
How Can I Improve the R-Value?
The easiest (but hardly the cheapest) way to improve the garage door insulation R value is to replace it. If this isn't an option, you can improve the heat resistance by adding a garage door insulation kit.
These kits usually include foam panels that you need to fit inside the door sections. While they won't match the performance of a fully insulated door, they can still make a noticeable difference.
Sealing gaps around the door with weatherstripping also helps prevent air leaks.
Is the R-Value the Only Factor That Matters for Garage Doors?
The simple answer is no. While R-value is important, it's not the only thing to consider. Other factors are:
- Material
- Thickness
- Sealing
- Durability
- Design
A well-built door with a slightly lower R-value can sometimes perform better than a poorly sealed door with a higher insulation rating.
Contact Trusted Atlanta Garage Door Experts
Now that you know the basics about garage door R-values, you can choose the right option for your home.
At Balanced Garage Doors, we can help you inspect your existing door, evaluate the R-value, and offer professional advice about the next steps. Call us to schedule an inspection today.
