Air Barrier Components
Air barrier components
are defined as the material or product which is used to connect
different air barrier materials or assemblies together to make the
air barrier continuous. Examples of air barrier components include
materials used to connect the wall air barrier assembly to a window
or door assembly, a roof assembly or a foundation assembly. They can
also be used to connect two pieces of air barrier material together
to produce an assembly.
The air permeance of
these materials are tested in a similar way to an air barrier
material but as they are normally used to bridge two different
materials, the testing is done and report per length of a defined
gap. The air permaeance of air barrier components are no greater
than 0.02L/(s•m2) @ 75Pa. (0.004 cfm/ft2 @
1.57 psf)
The testing is done on a
wall specimen which has a window blank with gaps between the window
blank and the wall and also has vertical and horizontal gaps in the
wall materials.
The test assembly is
configured as follows;
Air Barrier Materials, Components, Systems &
Assemblies
Air Barrier Systems
An air barrier system is
a system of building assemblies within the building
enclosure—designed, installed and integrated in such a manner as to
stop the uncontrolled flow of air into and out of the building
enclosure.
Building Enclosure
System
A system of building
components and materials designed and installed in such a manner as
to provide a barrier between the interior spaces in the building and
the exterior environment. A building enclosure system is designed
and constructed to provide protection of the interior environment in
a building from the effects of weather; the intrusion of noise,
pollutants, hazardous or deleterious conditions or materials and
unwanted organisms. A building enclosure system also provides
structural resistance to both natural and unnatural forces, as well
as aesthetic value or qualities for the building
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