Another thing that effecting the r value is the material of the insulation.
R value of solid wood garage door.
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.
As a final tip understand that a garage door that has an r 16 value will actually help keep your home protected from heat and humidity during the summer months.
The r value of a 1 3 4 inch wood door is 3 03.
Higher is better when looking at garage door r values but it s not the only factor to consider.
Below is a list of our garage doors and the r value of each one.
R value for solid wood doors this is a reprint of a recent article on some studies done to show that the straight r value of solid wood is misleading.
R values climb as thickness of the material increases.
There are mainly 2 materials for insulating garage doors polystyrene and polyurethane.
A 2 1 4 inch solid core wooden door for example has an r value of 3 70.
Even though it seems worse than other materials because wood has a lot of mass it actually can store energy not just prevent the ingress or egress of energy which is only what r values measure.