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What are some benefits of an air barrier system? - ANSWER-
-It restricts the
amount of moisture into your
building.
-It lowers the heat transfer via air movement in and out
of a building.
-It creates some sound
abatement.
-It prevents pollutants from entering
a building.
-It allows an HVAC system to run more
efficiently.
-It mitigates insect
pathways.
Where can air barrier requirements be found within the code? -
ANSWER-IBC =
RE:IECC
IECC = Chapter 4, Section
C402
,IRC = Chapter 11, Section N1104
(R403)
ASHRAE 90.1 = Clause
5.4.3
List the key requirements for air barriers in the code. -
ANSWER--It must be
continuous.
-The material or the assembly must meet permeability limits.
List 3 options for meeting the air barrier requirements in most
codes. - ANSWER--The materials must meet 0.004 cfm/ft2 @
1.56 ft./lbs. or 75pa
-An assembly must meet 0.04cfm/ft2 @ 1.56 ft./lbs. or 75pa
-A system must meet 0.4 cfm/ft2 @ 1.56 ft./lbs. or 75pa
Why are standard test conditions required in test methods? -
ANSWER-It allows
the materials to be compared to one another, and not the
performance of the
installation/application.
Explain the difference between a material test, an assembly
test, and a system test. - ANSWER--A material test verifies that
a specific material, when installed
at the recommended thickness, meets permeability
requirements.
, -An assembly test verifies that the assembly doesn't fail at the
joints between
the membrane and the
accessory.
-A system test verifies continuity between all pieces of the air
barrier system.
What are the benefits of an air barrier system test? -
ANSWER-It can verify
code performance requirements and it can identify air
leakage locations.
Why are test methods from other industries not used for testing
air barriers? - ANSWER-Test methods from other industries
required modifications for air barrier materials, so test methods
specifically for air barriers eliminates the need to modify those
test methods.
List an example of an international standard. - ANSWER-ISO
List examples of regional standards. -
ANSWER--ANSI
-ASTM
-
ASHRAE
List examples of industry standards. -
ANSWER--ABAA