Attic Temperature Too Hot

Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures for several hot days.

Attic temperature too hot.

This is because the attic is essentially open to the outside air. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature. Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer.

Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals. If it s 90 degrees outside the attic temperatures shouldn t. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures.

Thanks to the radiant heat affect attic temperatures on a 100 degree day can reach 170 degrees or more. Just make sure the ceiling is airtight and fully insulated and the temperature in the attic doesn t matter much. Note excessive heat. In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth.

That is certainly too hot but how hot is ok. But by adding powered attic fans you will draw more air into the attic. Whether it s 110 f or 130 f there s not much difference in the amount of heat flowing from the attic to the living space below. At the very best conventionally ventilated attics can never be cooler than the outside air temperature.

The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at. Poor insulation is usually the culprit although if you enter the attic on sunny winter day your attic space can be warmed by the sun more than your furnace.