Attic Temperature Too Hot

An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.

Attic temperature too hot.

Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures for several hot days. Just make sure the ceiling is airtight and fully insulated and the temperature in the attic doesn t matter much. If it s 90 degrees outside the attic temperatures shouldn t. Using insulation only keeps the attic s heat from traveling through your home.

That is certainly too hot but how hot is ok. The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at. In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.

But by adding powered attic fans you will draw more air into the attic. Ideal attic temperatures shouldn t be more than 10 to 20 degrees hotter than outside temperatures. At the very best conventionally ventilated attics can never be cooler than the outside air temperature. If your attic soars above 100 degrees and reaches the 150 mark its time to consult professionals.

If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage. This is because the attic is essentially open to the outside air. Note excessive heat. Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic.

Thanks to the radiant heat affect attic temperatures on a 100 degree day can reach 170 degrees or more. 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.