Attic Temp Is 150

However more often than not.

Attic temp is 150.

A standard powered exhaust vent turns on when the temperature inside the attic reaches a pre set limit and runs until the temperature drops. Attics can reach temperatures of 150 to 160 degrees f during a summer day although outside air temperatures are only 95 to 97 degrees f. They have done much of their testing in las vegas and phoenix where conditions are the worst and 150 degree attic temperatures are common. If it s 90 degrees outside the attic temperatures shouldn t exceed 110 according to home inspector jamison brown of amerispec home inspection services in poquoson.

While these powered vents do effectively draw out the. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. In some cases attic temperatures can reach above the 150 degree mark. If your attic is not properly ventilated your cooling costs will not be as low as they should be because your system is constantly running to compensate for the excess heat.

If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals. It s also been found that roofing design and materials have more effect on attic temperature than ventilation. An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. If the absorptivity of the roofing material is 0 92 the model predicts that the maximum hourly temperature for the roof sheathing plywood is 140 f 60 c and the maxi mum predicted exterior roof membrane temperature is 150 f 66 c.