Soffit Ventilation With Enclosed Attic

My roof contractor closed the gables and installed soffit vents.

Soffit ventilation with enclosed attic.

How does a soffit fan work. Soffit vents may leave air trapped at the top of your attic. Most effective ventilation uses a ridge and soffit continuous ventilation system but even these designs can vary from roof to roof. If stucco is used for the exterior wall finish the fascia soffit and rake areas can be finished with stucco as well to provide an attic that is restricted from outdoor air exchange.

We show you how to install soffit vents step by step to improve your attic ventilation. Out of an attic than the amount of new air allowed into the attic such as with soffit or eave vents. To lower attic temperatures and to remove excess moisture. Outside air enters the attic space through soffit or eave vents rises through the attic space as it warms and exits through vents that are positioned at or near the top.

The roof has a ridge vent and gables in two side of the roof. On a hot summer day attic temperatures can soar to 150 degrees as solar heat radiating through the roof accumulates in the. Since the soffit area for my old house is small he used 3 diameter round soffit vents. Home inspector recommended improvement of the attic ventilation for my new farmhouse build in the 1970s.

Enclosed attics and enclosed rafter spaces formed where. Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space. Attic ventilation serves two main functions. Static roof line vents are effective for ventilation but generally aren t recommended due to issues with leaks.

Another outcome of using the roof plane to create the air and thermal barrier is that the enclosed attic space is essentially inside the conditioned space. Soffit vents help increase the airflow are easy to install and only cost about 3 per 8 ft. In unbalanced attic ventilation situations where the nfva at or near the top of the space being vented greatly exceeds that of the soffit or eave vents such as is permitted in ibc 2012 it is possible for a slight negative pressure to be.