My Attic Gets Hot In The Summer

Ventilation is important to give moisture within the attic a way to escape.

My attic gets hot in the summer.

If hot air is allowed to sit in your attic it could overheat the shingles on your roof and cause damage. Having a properly vented attic is the best way to keep attic cool because it allows the hot air to escape during the summer. Not the overabundance but the lack of insulation in the attic. An overheated attic can bake asphalt shingles on the roof and cause them to deteriorate.

Within the attic insulation is a must. In addition hot air in your attic could increase moisture levels which could result in wood rot and mold growth. Hang pencil and paper next to the thermometer and record the outdoor and attic temperatures. The attic is a huge determinant in keeping your entire home cool so the first place to start cooling your home should be the attic.

Hang an outdoor thermometer in your attic making sure its range reaches at least 130 degrees fahrenheit. Another reason your attic is so hot is because of insulation. Though most newer homes have extensive vapor barriers to keep living space moisture from getting into the attic leakage around recessed light fixtures and bathroom vents still allow some moisture to enter the attic. And it can cause your air conditioner to work harder than it needs to and send your energy bills soaring with the temperature.

Using insulation only keeps the attic s heat from traveling through your home. Your air conditioner will have to work harder to keep your home cool which means higher energy costs for you. If you re designing and building a new home keeping an unconditioned attic cooler in summer is pretty much irrelevant. During the summer heat a poorly insulated attic will allow heat into your home.

It will help to keep the attic much cooler in the summertime. An unventilated attic can reach 150 degrees in the heat of summer 50 degrees higher than it should be. If the joints in your ductwork are not properly sealed your forced air system can suck attic air into the ducts air that s either really hot in the summer or really cold in the winter. The thermostat will usually start at 95 degrees fahrenheit which is the temperature that the attic fan usually starts at.

Unless your roofing system has insulation on the roofing deck and is designed without ventilation your furnace should not be heating your attic. Just make sure the ceiling is airtight and fully insulated and the temperature in the attic doesn t matter much.