Actively cooled or heated garages should have a garage door with an r value of r 13 or higher to save on energy costs.
Garage door r value difference.
This number is calculated as a function of thickness of the insulator and its physical properties.
Finally the larger the number the better the thermal insulation of the door.
When buying a garage door it s important to consider a few different aspects before worrying about r value.
U value is a measure of the flow of heat through an insulating or building material.
The polyurethane is a better insulator and therefor gives a higher r value then the polyurethane.
For instance if your garage is not attached to the home and is insulated you ll want to look for a door with a rating higher than r 10.
Between 9 18 4 the difference between the r values is caused by the thickness of the doors 1 model is 1 3 8 and the other model is 2.
The higher the r value the greater the insulating properties of the door.
There are mainly 2 materials for insulating garage doors polystyrene and polyurethane.
That s particularly true if you have a heating system in the garage.
Attached but not actively heated or cooled garages should have a garage door with an r value between r 6 and r 9.
Today s garage doors with polyurethane insulation will have an r value of 12 18 garaga s residential garage doors provide up to r 18 but you also want to choose a door that has otherwise good construction.
For instance r 16 is better than r 12.
Another thing that effecting the r value is the material of the insulation.
Thus r value is used to show the energy efficiency of a product.
Higher is better when looking at garage door r values but it s not the only factor to consider.
Overhead door corporation uses a calculated door section r value for our insulated doors.
The lower the u value the better the insulating ability.