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Abstract
Attics or roof can be designed and constructed to be either vented or unvented in any hygro-thermal zone. The choice of venting or not venting is a design and construction choice not a requirement determined by the physics or by the building code. The model codes allow both vented and unvented roof assemblies. The applicable physics impacts the design of attic or roof systems as does the applicable building code but neither limit the choice.
Attics or roof can be designed and constructed to be either vented or unvented in any hygro-thermal zone. The choice of venting or not venting is a design and construction choice not a requirement determined by the physics or by the building code. The model codes allow both vented and unvented roof assemblies. The applicable physics impacts the design of attic or roof systems as does the applicable building code but neither limit the choice.
Date
10/2006
10/2006
Author(s)
Joseph Lstiburek
Joseph Lstiburek
Page(s)
Source
Building Science Corporation
Building Science Corporation
Keyword(s)
attic ventilation; vented attic; unvented attic
attic ventilation; vented attic; unvented attic