Home Attic Temperature

If your attic has less than r 22 insulation 7 inches of fiberglass or rock wool or 6 inches of cellulose you should add more.

Home attic temperature.

Defeat attic heat the temperature in your attic can reach 150 degrees on a hot summer day a situation that if left unchecked can drive up cooling costs by as much as 40 percent. 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. They have thermostats that turn the fan on at a recommended preset temperature of 100 110 degrees. If your attic soars above 100 degrees and reaches the 150 mark its time to consult.

Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. Install electric ventilators and attic fans which remove hot air from an attic. This prevents hot air from seeping into your home and driving up the temperature in the living space which reduces the load on your air conditioner. A standard powered exhaust vent turns on when the temperature inside the attic reaches a pre set limit and runs until the temperature drops.

Alternatively install passive vents such as gable soffit and ridge vents which are openings in the roof that allow hot air to escape. When the attic becomes part of the home to be. What should the attic temperature be relative to the outside and house temperatures assuming a new supposedly well insulated house. The white roof lowered the attic temperature by about 20 f.