R-Value Explained
If you’ve decided to replace your garage door, there’s a good chance that this process is a little overwhelming. This isn’t something that is done very often, so many people don’t know much about it, unless they’ve had to do it. If you’re not an expert in this area, we are here to help! One term that is tossed around is the “R-value.” What exactly is an R-value, why should you worry about it, how does it affect your decision?
What is R-value?
Most garage doors are insulated and the insulation is designed to stop the heat flow. The R-value allows customers to know how well the insulation is working. R-value is a measure of thermal efficiency or the ability to keep the hot air inside and not allow it to mix with the cold air that is outside. The higher the R-value, the more efficient the insulation is, and the more likely warm air will stay inside.
What materials are best for insulation?
Garage doors generally are made of metal, wood, or fiberglass. And depending on the door, insulation may or may not be included in the door. The two most common types of insulation are polystyrene (styrofoam) and polyurethane (spray foam). These two materials are alike but the difference comes in the amount of protection your garage will get.
Polystyrene comes in the form of panels and can be cut to match garage doors. It is usually not an exact fit, so there may be room for air to move. This is good material for areas that don’t experience severe cold weather. Polyurethane is sprayed onto the door, expands, and covers all areas of the door. This is useful for areas that do experience extreme cold weather. The R-value is higher for the polyurethane.
Why should worry about the R-value?
The R-value will greatly influence the efficiency of your garage the the amount of heat it is able to keep in. How often your garage is used will dictate how high you’d like your R-value to be. If its main purpose is to house the car, and not used for much more, a lower R-value would be acceptable. No point in spending money to heavily insulate a garage that doesn’t need it. If your garage is used as a workspace or rooms are above the garage, efficient insulation and higher R-value will help you save money in the long run.
What is the best R-value for a new garage door?
This depends on the needs of your home, but the average garage door with insulation (polyurethane) has an R-value of 12-18. Overhead Door of Garden City offers a wide range of doors that have various R-values. But remember that R-value is not the only factor to consider when choosing a new door. Durability, good construction, etc. are important factors as well.
R-value is one of many confusing terms for homeowners purchasing a new garage door. If you have any questions or need assistance, Overhead Door of Garden City is more than happy to help! Call us 620-275-4602 or contact us to set up an appointment today!
