At a glance, it’s easy to think that most garage doors are the same. Other than aesthetics and size, they really don’t differ all that much. As long as you’re comparing garage doors with the same R-value, they’ll perform the same when it comes to reducing energy consumption and preventing temperature loss, right? Actually, that’s not correct. There’s a lot more to it.
In order for garage doors to perform correctly, they need to be manufactured of top-performing materials, be constructed with thermal breaks, and more. If you’re comparing doors based solely on R-value, then you could end up with one that doesn’t really do what you need it to in terms of reducing your heating and cooling costs. So, what should you look for?
End Blocks Made of Wood
Garage doors use section end blocks to hold the insulation between the two pieces of metal that form the body of the garage door. Those end blocks also work as anchor points for the hinges that allow each garage door section to move. Weatherstripping and a glue joint connect the interior and exterior of each metal sheet.
For most garage door manufacturers in North America, the normal manufacturing process is to cut steel sheeting about 26 inches wide, and to the length required for the specific door. The ends are closed using normal steel end caps. While that offers durability, it creates a problem called thermal bridging in which heat can seep into or out of the garage because of the metal touching metal.
Garaga does things differently. They use a completely different injecting and manufacturing method, and rely on wood end blocks, not steel end caps. Wood does not transfer heat, and stops the thermal bridging process by creating what is called a thermal break.
Garage Door Joints
Another important consideration here is how the metal sides are attached to one another (the front and back steel panels). Most companies use a metal staple, either with or without glue. This lends itself to temperature loss due to thermal bridging.
Garaga creates a thermal break in this area to prevent thermal bridging. The company uses a triple-contact PVC weatherseal to connect the front and rear panels. This ensures that there is no metal to metal contact, and no thermal bridge.
Many garage doors feature inferior weatherstripping around the garage door that hardens when temperatures drop. This causes problems with the seal, and can cause temperature bleed during the winter. Garaga uses a double-lipped, extra thick, top-quality weatherseal material that has earned arctic grade status. In addition, this material stays flexible all the way down to -15 degrees F (-25 degrees C).
The Bottom of the Door
Too many garage door manufacturers use low-grade weatherstripping around the bottom of the door. It hardens when temperatures drop, meaning that you don’t get a very good seal between the bottom of the door and the floor.
Garaga use a TPE-based weatherseal that remains flexible and supple even at temperatures of -52 degrees F (-62 degrees C).
In the End
Ultimately, there are many different features that you need to think about when comparing garage doors. Yes, the R-value of the door is important, but it’s far from the only important thing. Ask how each door you’re considering is made, about thermal breaks built into the door, and about the material used for the weatherstripping. Don’t focus solely on R-values.
For more information, or help finding the perfect garage door for your home, we invite you to contact us. We will happily explain your options, and help you find the ideal door based on your specific needs and requirements. If you’d like, we can even offer you a quote by email.
We also invite you to pay an in-person visit to our showroom. Alternatively, you can check out our Design Centre to view the styles available and how they work with your home’s design. You’re also welcome to use our image gallery to see what we’ve accomplished for other customers. We look forward to serving your needs and helping you find the best garage door for your home, your budget, and your requirements.