Attic Temperature Vs Outside Temperature

Simply undertstand that the insulation in your inner envelope ceiling attic floor must insulate the inner envelope of your house living area against whatever temp is in your attic.

Attic temperature vs outside temperature.

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. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. Interior attic air exterior air inner and outer sheathing and internal rafter temperatures of black and white shingled chambers were monitored. I have recently added a ridge vent to my roof and have also been taking temperature readings.

A check the temperature an hour before sunrise. 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. Ideally you don t want it any hotter than it is outside but reality generally prevent this from happening. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals.

Temperatures were measured using thermocouples and recorded over a 3 year period from october 1991 through september 1994 using a datalogger multiplexer device. I hit 130 degrees in my attic when the outside temperature was. What should the attic temperature be relative to the outside and house temperatures assuming a new supposedly well insulated house. Warner is right that the attic should be close to the outside temp.

Your insulating and heating cooling the house not the attic. What should be the difference between outside inside temperature of an attic on a summer day versus a winter day.