HomeMy WebLinkAboutMiscellaneous Compliance Report 2011-4-5
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I$UILDING
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Exterior Wall Envelope
Self-Certification Form
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owner-builder at the following address:.
. am the general contractor or the
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Permit#
To conform to the 2008 Oregon Residential Specialty Code (ORSC), Section
R703.1.1, I am notifying the building official that I am aware of the exterior wall
envelope requirements of R703.1.1, and hereby certify that the components of
the exterior wall envelope have been installed in accordance with the code
requirements. [Section R703.1.1 is provided for reference on the reverse side of
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Signature
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Date
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Revised: 2/8/2010
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Excerptfrom 2008 Oregon Residential Specialty Code Section R703, Exterior Covering:
R703.1.1 Exterior ,Wall Envelope. To promote buillJing durability, the exterior wall envelope shall
be installed in a manne'that water that enters the assembly can drain to the exterior. The envelope
shall consist of an exterior veneer, a water-resistive barrier as required in R703.2; a minimum 1/8
inch space between the water-resistive barrier and the ~icterior veneer,and integrated f1ash'ings as
required in R703.8. The required space shall be formed by the use of ~ny non-corrodibi~Yiurring .
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strip, drainage '!'at or drainage board. The envelope shall provide proper integration of flashings
with the water-resistive' barrier, the space provided and the exterior veneer. These components, in
conjunction, shall provide a means of draining water that enters the assembly to the exterior. .
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Exceptions: :oI,,",:.~ '~':. .
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1. . A,~pace is ,not r~,Quired where the exterior veneer is iri~t~lIed over a water-re~ist.i~e ,barrier
complying with.section R703.2 which is manufactured in a manner !o..e.nhance prainage and
. meets the 75% drainage efficiency,requirement of ASTM E2273 or other r~cogniied
national stimdards.. .
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2. A space is not required where window sills are equipped with pan flashings which drain to
the exteriorsurfaceofthe ve~eer in athrough wall fas';io~;'AII p;;';-'flashi;,gs~liall be
detailed within the construction documents alld shail be 'oteither a self-adhering
membrane complying with AAMA 711-07 orof an approved corrosion:resistarit material or
a'co.mbination'thereof. Self:adhering membranes extending to the exterior surface ofthe
veneer shall be. concealed with trims or other.measures to protect fromsuniight.:.
3. A ~paceisnot required where the exterior ve~e~r is m~nufacturedin.a manner to enhance
drainage.and meets the 75% drainage efficiency requirementS ofASTME2273 or other
re.~ogni~ed n~ti~nal standards and is installed over a water resistive barriercomplying with
section R703:2: .... . . .'.
4.' 'A'space' is not 'reciliired ,where the exterior veneer is matching 'an existing..e'xterior fjni~h as
)n ~ddit.ionsl alt~rationsl"6r repairs.' .' ". ..' '. ..'.. - _ .
5.. A water-resistant eXterior wall envelope shall not be required over concrete or masonry
walls designed in accordance with Chapter 6 and flashed according to section R703.7 or
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6. Compliance with the requirements for a means of drainage, and the requirements of
Section R703.2 a~d Section R703.8, shall not be'required for an exterior wall envelope that
has been demonstrated to. resist wind-driven rain through testing of the exterior wall
e,;'velope, indudhigjoints, penetrations a'nd intersections with dissimilar materials, :in
accordance with ASTM E 331 under the following conditions: J;' - -:- > ': .
6.1. > Exterior wall envelope test assemblies shall indude at least one opening, one control
joint, one wall/eave interface and one wall sill. All tested openings and penetrations
shall be representative of the intended end-use configuration. . .
.6.2. Exterior wall envelope test assemblies shall be at least.4 feet by 8 feet in size.
6.3. Exterior wall assemblies shall be tested at a minimum differential pressure of 6.24
. pounds per squarefoot. .' .' ., .. > '.'
iN.:. -Exterior ~all envelope assemblies shall be subjected to a minimu";' test exposure
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. -. ... p~ration of 2 hours. ' . . ' , . .
The exterior wall envelope design shall be considered to resist wind-driven rain where the
results of the testing indicate that water did not penetrate: control joints in the exterior
Will efl~elope;.joints at the perimeter of openings penetration; or.intersections of
~r';trtations with dissimilar materials. ' .
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