R Value Garage Door Heating Savings

Actively cooled or heated garages should have a garage door with an r value of r 13 or higher to save on energy costs.

R value garage door heating savings.

The standard garage door r value recommendation for a detached garage depends on your climate but if you re looking for the best r value garage door insulation you want to find a garage door with a minimum r value of 12 or more to be most effective. The r value of some insulations also depends on temperature aging and moisture accumulation. It does not offer twice as much thermal resistance or twice the energy savings. Installing more insulation in your home increases the r value and the resistance to heat flow.

This guide will teach you everything you need to know about insulation r values so you can better insulate your home. Notice that the advertised r value of a garage door means very little if the door does not have a complete thermal break system and a proper weather seal system around all four sides of the door and between door sections. Without thermal break heat and cold will move from the outside of the door to inside of the garage reducing the insulation. A value of r 16 offers a 5 reduction in heat flow and a 5 improvement in energy efficiency over a value of r 8.

However an r 16 value is not twice as good as an r 8 value. When calculating the r value of a multilayered installation add the r values of the individual layers. For example a 1 1 2 inch 3 81 cm thick door without a window offers more than five times the insulating value of a solid wood door of the same size. R value measures how well building insulation can prevent the flow of heat into and out of the home.

See chart for r value comparisons. For more information about garage door insulation and. Attached but not actively heated or cooled garages should have a garage door with an r value between r 6 and r 9. The higher the r value the more the door resists conductive heat.