• MPIRE Improvements

Why Energy Efficient Garage Doors are Important

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Your garage door covers the largest opening in your home, an Amarr insulated garage door from MPIRE Improvements will help reduce the transfer of hot or cold air into your garage. This is important for a number of reasons:
  • If you have an attached garage on your home, air in the garage can travel through the doorway to your living area. An insulated garage door will reduce the transfer of air from the outside to the inside.

  • If your garage is below another room in your home, air can travel through the ceiling of the garage into the floor of the room above. An insulated garage door will keep temperatures in the garage fairly stable to reduce the temperature fluctuation in the room above.

  • If you use your garage as a workshop, gym or entertainment space, your comfort will be a top priority. An insulated garage door will help keep the temperature in the garage within a narrower temperature range as compared to the extreme range of outside temperatures.

  • An insulated garage door is generally quieter and has a more attractive interior than a non-insulated door.


Garage door insulating capabilities can be greatly affected by the door construction. For that reason, Amarr insulated garage doors are built to maximize energy efficiency. The door section construction and insulation of Amarr garage doors helps keep your garage as comfortable as possible.

How Energy Efficiency is Measured



R-Value or U-factor is a measure of thermal resistance used in the building and construction industry. Specifically, R-value is thermal resistance to heat flow and U-factor is the rate of heat loss. Many manufacturers use R-values and U-factors to show the energy efficiency of their product. The R-value number is calculated based on the thickness of the insulation and its chemical properties. The U-factor number is determined based on an actual test of an entire door assembly.
The higher the R-value number and the lower the U-factor number, the better the insulating properties of the material. However, an R-16 value is not twice as good as an R-8 Value and similarly for U-factors. A value of R-16 offers a 5% reduction in heat flow and a 5% energy efficiency improvement over a value of R-8. See chart for R-Value comparisons.
Calculated R-values for Amarr garage door sections and tested U-factors for Amarr complete door assemblies are in accordance with DASMA TDS-163 and based on actual independent testing per DASMA.
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