MS-2012-00236_0004.tif I !
2009 INTERNATIONAL RESIDENTIAL CODE
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CITY OF BLAIR REROOFING REQUIREMENTS
R907.1 Materials and methods of application used for recovering or replacing an existing roof
covering shall comply with the requirements of the building code. j
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R905.2.7.1 ICE`PROTECTION REQUIRED An ice barrier that consists of at least two layers of
underlayment or of a self - adhering polymer modified bitumen sheet. Either option shall
be used in lieu of normal underlayment and shall extend from the eave's edge to a point
at least 24 inches inside the exterior wall line of the building.
R907.2 STRUCTURALLY SOUND': The structural roof components shall be capable of ,
supporting the roof covering system and the material and equipment loads that will be j
encountered during installation of the roof covering system.
R907.3 RffM6VAL-0 New. roof coverings shall not be installed
without first removing existing roof coverings where any of the following conditions
occur,
1, Where the existing roof covering is water soaked or has deteriorated to the point
that the existing roof covering is not adequate as a base for additional roofing.
2. Where the existing roof covering is wood shake, slate, clay, cement or asbestos
cement tile.
3. Where existing roof has two or more applications of any type of roof covering.
4, For aspflE - it shingles,
'when the.building is located iri_an area subject to`mode'rate or'
severe Iail'exposure Note: This applles to the.City of_Blair
Exceptions allowed under R907.3 i
1. Complete and separate roofing systems, such as standing -seam metal roof
systems, that are designed to transmit the roof loads directly to the buildings
structural system and do not rely on the existing roofs and roof covering for
support, shall not require the removal of existing roof coverings.
2. Installation of metal panel, metal shingle and concrete and clay tile roof coverings
over existing wood shake roofs in accordance with Section R907.4.
3. The application of new protective coating over existing spray polyurethane foam
roofing systems shall be permitted without tear -off of existing roof coverings.
R907.5 EA vent flashing, "metal edges; drain outlets, collars metal.counter- flas
shall not relnstalled v►rhero rusted,
g constructed in accordance with approved manufacturer's i
8907,6 Flashing shall be re installation _
instructions. Metal flashing to which bituminous materials are to be.adhered shall
be primed prior to installatson
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