Attic Temperature Vs Outside Temperature

However more often than not.

Attic temperature vs outside temperature.

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. A good sign is when you open your attic in the winter and you don t see any frost on the nails poking through. Ideally you don t want it any hotter than it is outside but reality generally prevent this from happening.

Warner is right that the attic should be close to the outside temp. 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. What should be the difference between outside inside temperature of an attic on a summer day versus a winter day. What should the attic temperature be relative to the outside and house temperatures assuming a new supposedly well insulated house.

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. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. I have recently added a ridge vent to my roof and have also been taking temperature readings. Should there be a difference between a 78 degree day and a 98 degree day.

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. Your insulating and heating cooling the house not the attic.