Are All Attics Vented

Ductwork interior to thermal and pressure boundary.

Are all attics vented.

On older houses attics may be ventilated only with louvered vents at the tops of gable ends walls although it s usually more effective to use these in conjunction with soffit vents. Even if your attic has insulation you may still be asking so should my attic be vented then and the answer is probably yes. We are on a mission to give homeowners all of the information they need to make the best decision for their home s insulation needs. In all climates this leads to thermal penalties increased energy consumption in the order of 20 percent of the total space conditioning load rudd and lstiburek 1997.

There s a chance it already is but it s always best to reach out to a local professional for the final word if what you have is enough or too. If you walk down to your local lumberyard and lean on the counter the employees and nearby customers will offer a variety of opinions about why attics need to be vented. Most homeowners and builders believe that attics should be vented. In hot humid climates condensation on ductwork and air handlers located in vented attics is common.

With this experience comes the knowledge of the benefits of vented and unvented attics. As part of that mission below i will discuss the vented attic system and the unvented attic system as well as the pros and.