Texas Attic Temperature

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.

Texas attic 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. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. Calculations indicate that on a july day in texas a ventilation rate of one air change per minute for a typical attic using 95 degree f air will lower the peak attic temperature to about 101 degrees f. On a typical summer day with an outdoor temperature between 90 to 100 degrees the temperature in an attic space without radiant barrier can easily reach 140 degrees.

Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. However more often than not. If your attic is not properly ventilated your cooling costs will not be as low as they should be because your system is constantly running to compensate for the excess heat. However more often than not.

If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals. In some cases attic temperatures can reach above the 150 degree mark. An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. Attic temperature depends on the amount of solar radiation construction details and the rate of ventilation.

Summer attic air temperatures with reflective roof peak at or slightly above outdoor air ambient. 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.