U factor measures the rate of heat transfer and is appropriately applied to the thermal efficiency of windows which similar to insulated roll up garage doors are assemblies comprised of multiple components.
U factor garage door.
It tells you how effective a particular insulation material such as polyurethane or polystyrene foam is at preventing heat loss.
Understanding r value rate of heat loss.
The higher the r value the better the thermal efficiency of the material.
The lower the number the lower the energy loss and therefore the better the thermal performance.
To keep your garage cool in summer or warm in winter you want a garage door with a u factor of 35 or less although the lower the u factor the better.
Your garage door u factor measures the heat transference of your garage door or how well heat can move through the material.
U factor and air infiltration results for clopay commercial sectional doors.
Of the two measurements the u factor will give a better representation of the insulating abilities of your fully installed garage door.
Though not used as often as r value u factor is another number you may see when shopping for a garage door.
Now that you understand why u factor is a better energy performance indicator lets discuss the details of it.
U value is the inverse of r value.
A high garage door u factor means that your garage door transfers heat easily.
R value is the most common measurement for insulation in garage doors.
Building codes standards such as those found in leed iecc and ansi ashrae ies standard 90 1 provide guidelines and standards for how sectional overhead doors should be made and how they.
The u factor is the measurement of thermal conduction due to heat flow through an installed door system.
Installed u factor a tested value of actual energy loss whether heat or cold of an installed door wall or window assembly.