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.
Normal attic temperature in summer.
However more often than not.
Aug 14 2017 if you ve ever had to go digging through your attic in the summer to try and find something you realize immediately the temperature in your attic is noticeably hotter.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be.
In some cases attic temperatures can reach above the 150 degree mark.
An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.
Hot summer weather poses the opposite problem for maintaining recommended attic temperatures.
When it comes to adjusting the thermostat of your attic s fan it s best to adjust it to approximately 90 to 95 degrees.