Average Attic Temp In Summer
In some cases attic temperatures can reach above the 150 degree mark.
Average attic temp in summer. 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. 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. Of course some environments are much hotter than others so this will be the perfect time to measure out how warm your attic will get during the most heated of seasons.
An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. Summer attic air temperatures with reflective roof peak at or slightly above outdoor air ambient. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature. However more often than not.
Hot summer weather poses the opposite problem for maintaining recommended attic temperatures. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.