HomeMy WebLinkAboutMiscellaneous Compliance Report 2011-1-28
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Exterior Wall Envelope
Self-Certification Form
I, J.{.lC.VOerN ({o""':<0
owner-builder at the following address:
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Street Address
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City
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Permit#
. am the general contractor or the
To conform to the 2008 Oregon Residential Specialty Code (ORSe), 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
this form.]
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Signature
(-Us-! (
Date
Revised: 2/8/2010
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Excerptfrom 2008 Oregon Residential Specialty Code Section R703, Exterior Covering:.
R703.1.1 exterior Wan Envelope. To promote builCting durability, the exterior wall envelope shall
be installed in a m~nnerthat water that enters the assembly can drain to the exterior. The envelope
shall consist cif an exterior veneer, a water-resistive barrier as required in R703.2, a minimum 1/8
inc,; space between the water-resistive barrier and the ~icterior veneer, and integrated flashings as
required in R703.8. The required space shall be formed' by the use of any non-corrodiblefurring
strip, drainage mat or drainage board. The envelope snail 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.
Exceptions:
1. A..space is,not r~.quired where the e~terior v'eneer is installed over a-watEr-resistive barrier
complying with.section R703.2 which is manufactured in a manner to enhance drainage and
. nie~tHhe 75% drainage efficiency. requirement of ASTM' E2273 or other recogniied
national stim,dards.. . ," . '.'
2. A space is not required where window sills are equipped with pan f1ashi'ngs which drain to
the exterior surface .of the veneer in a through wall fashion: All pan flashings shall be
detailed within the construction documents andshall be of eithera self~adhering.
me.mbrane complyingwithAAMA 711-07 or o! an approved corrosion;resistant material or
aco.mbination thereof. Self-adhering membranes extending to the exterior surface of the
veneer shall be. conce.aled with trims or, other measures toprotect,fromsunlight...
3. A ,spa"ce:is:-:not required'where the exterior'veneer is' manufactured 'in a manner to enhance
drai~age,and meets the 75% qrainage efficieriCy requirenients ofASTME2273 or other'
.rec'ognized nationai standards andisinstalled over a water 'resistive barriercomplying with
section R703.2.,' . '.' .' .' .... . '.' -.' ..'
4. A space' is no't '~eq'ujred ,w,here the-ext'erio~ veneer is matching "an ~xjstj!1ge~~ri?~ finish as
. in addit,iqns, alte:rations"orrepairs. ". . ". .
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.tor
R703.8.. , . .... ,..'. . .
6. Compl!arlce with the requir'ements f~r a means of drainage, and the requirements of
. Section R703.2 and 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, incl~dingjoints, penetrations and intersections with dissimilar materials,'in
accordance with ASTM E 331'under the following conditions: '
6.1. - Exterior wall envelope test assemblies shall include 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 leasf4 feet by 8 feet in size.
6.3. Exterior wall assemblies shall be tested at a minimum' differential pressure of 6.24
pounds pe'r square foot. . .
6.4. Exterior wall envelope assemblies-shall be subjected to a minimum test exposure
duration of 2 hours.. ,'.. ' .
The exterior wall envelope design shall be considered to resist wind-driven rain where th'e
results of the te~ting indicate that water did not penetrate: control joints in the ext'eri~r \
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wall envelope; joints. at the perimeter of openings penetration; or;ntersections,o( ;
terminations with dissimilar materials. . ~ > . / '/
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