View source for ASM 10.3.1 Hooked Valley Flashing

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| style="color: black; background-color: #ffffcc; width: 100%;text-align:center" | Images used in a Construction Detail are representative and <u>not intended in their representation of an assembly to be prescriptive</u>.  Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the Standards, Guiding Principles and Recommendations of the '''RoofStar Guarantee Standards''' for a Waterproofing or Water-shedding System. Actual design with respect to dimensions, the selection of materials and their application remains the responsibility of the ''Design Authority''.<br><br>The full text of applicable '''''RoofStar Guarantee Standards''''' may be read by using the <span style="color:#6495ed">'''blue hyperlinks'''</span>
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<div class="panel-heading"><big>'''ASM Details'''</big></div>
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[[File:ASM 10.3.1 Hooked Valley Flashing.jpg|class=img-responsive | link=http://rpm.rcabc.org/images/b/bb/ASM_10.3.1_Hooked_Valley_Flashing.jpg]]
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=== WORK INCLUDED ===
;(1) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMVALLEYMEM |'''Valley Protection Membrane''']]: Accepted self-adhered modified bituminous eave protection membrane.
;(2) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMVALLEYPAN |'''Valley flashing''']]
;(3) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMFASTENING |'''Fastening''']]: Metal valley panels to be secured with compatible, non-corrosive, flat head fasteners 200 mm (8") o/c. Metal roof panel to metal valley panel overlap must be a minimum of 125 mm (5"). See '''10.3.5.2.2''' ('''5''').
;(4) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMVALOVERLAP |'''Valley panel overlap''']]: Overlaps minimum 200 mm (8") sealed with two rows of acceptable sealant or butyl tape, and secured with drag load fasteners.
;(5) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMICE|'''Membrane flashing''']]: Accepted self-adhered modified bituminous eave protection membrane.
;(6) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMUNDERLAYMENT|'''Underlayment''']]: The type of underlay required is determined by roof slope.
;(7) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMSLIP|'''Ventilation layer''']]:  A ventilation space is required on slopes less than 1:3; entangled mesh (shown) may be used as void fill.  The ventilation space facilitates drying as condensation forms on the underside of the metal panels.
;(8) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMPANEL |'''Architectural metal roof panel''']]

=== RELATED WORK BY OTHERS ===
;(A) [[RoofStar Guarantee Standards for Architectural Sheet Metal (ASM) Systems#ASMDECK|'''Acceptable Deck''']]
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'''NOTE''': Refer to '''''RoofStar Guarantee Standards''''' for additional requirements.

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