The most energy efficient attics are insulated and ventilated.
Are all attics vented.
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.
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.
Even if your attic has insulation you may still be asking so should my attic be vented then and the answer is probably yes.
In hot humid climates condensation on ductwork and air handlers located in vented attics is common.
Most homeowners and builders believe that attics should be vented.
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.
With this experience comes the knowledge of the benefits of vented and unvented attics.
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.
Ductwork interior to thermal and pressure boundary.
Unfortunately it s highly unlikely that the statements you hear will be true.