Attic Temperature Differential Winter

Snowpack on a roof covering vents of any type alters the airflow from ventilation thus altering the.

Attic temperature differential winter.

As snow accumulates it alters the temperature profile of an attic and roof surface. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. If your attic soars above 100 degrees and reaches the 150 mark its time to consult. Attic ventilation i am providing here a bit of background information because this is a very canadian problem and mostly unknown to people in less extreme climates such as e g europe.

During the winter yes but not during the summer. Now if the ridge vent is only partial or if the attic air temperature is excessive 20 degrees higher than the outside air fans may prove beneficial pick the right fan. The cooling load for a home air conditioner depends on the difference in temperature between the inside and outside air and reduction of attic temperatures from 155 degrees to 105 degrees f will result in a significant reduction in cooling load. Thermostat setting adjusts from 60 120 degrees f normal settings are 85 110 degrees f.

The white roof lowered the attic temperature by about 20 f. These images came from a presentation danny parker gave pdf on fsec s cool roof research the third graph shows attic temperatures from the middle of the attic for several different types of roofing as well as a sealed attic. In south florida the typically daytime temperature might be 92 degrees to 95 degrees and the attic temperature might vary from 120 degrees for a tile roof to 140 degrees for a dark color shingle roof. My house is a 1979 basic ranch style house and ive always had bad ice problems.

Adjustable thermostat and humidistat control has 10 amps 120 volts ac. After the worst winter we ve had in a long time and the ice ripping the gutter and fascia board off my house i d had enough. It removes excess heat from an attic in summer and humidity in winter and allows equalization of inside and outside attic temperatures dual humidity control.