Vented Attic Fine Home Building

15 articles and videos from the fhb archive that will take you through every step of the roof venting process.

Vented attic fine home building.

Of vent for every 300 sq. Project house video series. Traditionally building codes have required attic ventilation. Built in bookcases in an antique home.

Building codes vary. An early attic model fairey and swami 1992 used primarily for modeling the performance of attic radiant barrier systems treated the attic as two zones an upper zone and a lower zone. It s one of the more confusing aspects of home building and. With all of the existing home inspections that i did on buildings anywhere from relatively new to over 100 years old a high percentage of the time there were problems.

For example this author s home has attic space accessible with a standard door on the second floor and an upper section that can be reached only via a ceiling hatch. The intended purpose was to allow warm air and moisture to escape. Mike is building all. An improved two zone attic model parker et al 1991 used in the fsec 3 0 program accounts for detailed radiation buoyancy and wind driven airflows and.

It is my opinion that a vented attic is just never going to be as good as an unvented attic when you move the thermal envelope to the underside of the roof. In an unvented attic assembly air impermeable insulation is applied directly to the underside of the structural roof deck and is tied into the insulation located in the walls so that the roof system becomes part of the insulated building enclosure. In order to facilitate this exchange of warm and cool air the general rule of thumb suggests installing at least 1 sq. If you ve got a roof over your latest building project chances are you ve also given some thought to roof venting.

This is based principally on good historical experience and simple psychrometric analysis handegord giroux 1984. We met up with mike maines at his 1830s greek revival home just in time for him to show us how to install a new fireplace surround.