Now that you understand why u factor is a better energy performance indicator lets discuss the details of it.
U factor garage door.
It tells you how effective a particular insulation material such as polyurethane or polystyrene foam is at preventing heat loss.
The thermal performance and energy efficiency of commercial sectional overhead garage doors has become an increasingly more important factor to consider when designing building and maintaining commercial or industrial spaces.
The u factor is the measurement of thermal conduction due to heat flow through an installed door system.
U factor and air infiltration results for clopay commercial sectional doors.
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.
Installed u factor a tested value of actual energy loss whether heat or cold of an installed door wall or window assembly.
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.
R value is the most common measurement for insulation in garage doors.
The higher the r value the better the thermal efficiency of the material.
Understanding r value rate of heat loss.
Of the two measurements the u factor will give a better representation of the insulating abilities of your fully installed garage door.
The lower the number the lower the energy loss and therefore the better the thermal performance.
U value is the inverse of r value.
Your garage door u factor measures the heat transference of your garage door or how well heat can move through the material.
U factor represents the flow of heat through a material meaning the lower the u factor the better.
Though not used as often as r value u factor is another number you may see when shopping for a garage door.