Attic Temperature Vs Outside Temperature

Should there be a difference between a 78 degree day and a 98 degree day.

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. What should the attic temperature be relative to the outside and house temperatures assuming a new supposedly well insulated house. Table 1 shows the calculation for the example in figure 1. For an indoor temperature of 68 f and an outdoor temperature of 8 f the temperature at the interface between the batt and the foam will be 27 f effect of indoor and outdoor air films is omitted.

The technique applies to any number of component layers in an assembly. Ideally you don t want it any hotter than it is outside but reality generally prevent this from happening. However more often than not. I hit 130 degrees in my attic when the outside temperature was.

A check the temperature an hour before sunrise. Your insulating and heating cooling the house not the attic. 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. Warner is right that the attic should be close to the outside temp.

What should be the difference between outside inside temperature of an attic on a summer day versus a winter day. I have recently added a ridge vent to my roof and have also been taking temperature readings. A good sign is when you open your attic in the winter and you don t see any frost on the nails poking through.