Attic Temperature In Summer

When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.

Attic temperature in summer.

The results of this study showed that during the summer in illinois attic ventilation could lower attic air temperature by 28 f 15 5 c and sheathing temperature by almost 10 f 5 5 c. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature. Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures. In some cases attic temperatures can reach above the 150 degree mark.

An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. Hang an outdoor thermometer in your attic making sure its range reaches at least 130 degrees fahrenheit. Summer attic air temperatures with old terra cotta colored asphalt shingles peaked at 140 to 145 at 18 above the blown in fiberglass insulation layer at the attic floor. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.

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. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. However attic ventilation had only a minor effect on roof shingle temperature. Hot summer weather poses the opposite problem for maintaining recommended attic temperatures.