Difference between revisions of "LMF Metal Cap Flashing (joints)"

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<big><big>Division D - Construction Details</big></big>
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<big><big><big><big><big>LMF | Metal Cap Flashing (joints)</big></big></big></big></big>
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{| class="wikitable" | style="color: black; background-color: orange; width: 100%;text-align:center"
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| colspan="2"  | <big>'''''Notice to Reader'''''</big>
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|-
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| style="color: black; background-color: #ffffcc; width: 100%;text-align:center" | Images used in a Construction Detail are representative and not prescriptive.  Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the requirements of the Standard they represent. Unless otherwise required by the Standard, dimensions, the selection of materials and their application remains the responsibility of the ''Design Authority''.<br><br>The full text of the referenced requirements can be read in any Standard and may be read by using the <span style="color:#6495ed">'''blue hyperlinks'''</span>
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<div class="panel-heading"><big>'''Metal Flashing Details'''</big></div>
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<div class="panel-heading"><big>'''SBS Details'''</big></div>
 
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[[File:10.2.1.jpg|class=img-responsive]]
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[[File:MF - Metal Cap Flashing (joints) - A.png|class=img-responsive | link=https://rpm.rcabc.org/images/5/5d/MF_-_Metal_Cap_Flashing_%28joints%29_-_A.png]]
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[[File:MF - Metal Cap Flashing (joints) - B.png|class=img-responsive | link=https://rpm.rcabc.org/images/3/3c/MF_-_Metal_Cap_Flashing_%28joints%29_-_B.png]]
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[[File:MF - Standing Seam.png|class=img-responsive | link=https://rpm.rcabc.org/images/a/a3/MF_-_Standing_Seam.png]]
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[[File:MF - S-Lock, Single.png|class=img-responsive | link=https://rpm.rcabc.org/images/0/09/MF_-_S-Lock%2C_Single.png]]
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[[File:MF - S-Lock, Double.png|class=img-responsive | link=https://rpm.rcabc.org/images/b/b6/MF_-_S-Lock%2C_Double.png]]
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<b><i>END JOINTS</i></b> in metal flashings are made using any one of the joints shown in this section, providing the following rules are complied with:
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=== WORK INCLUDED ===
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;(1) Metal cap (coping) flashing: Fabricate and install in keeping with the requirements in Part 13, "Linear Metal Flashings".  Base membrane must extend across the top of the parapet (to waterproof the structure and separate the metal from moisture-susceptible substrates) and extend down the outside face of the parapet at least 50 mm (2”).  Edges must be hemmed (1a), although a kicked-out drip edge is optional.
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;(2) Drip edge: Optional but recommended.
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;(3) Fasteners: Select for compatibility with metal flashing, membrane and substrate (Article 13.2.1.3., "Fasteners").
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;(4) Concealed "wind" clips: Install cap flashings using a continuous or discontinuous metal ‘wind’ clip affixed to the outside face of the parapet, or to the top of the parapet (see Alternate illustration).  Refer to Part 13 in the related Standard for securement requirements (Note that clips must be fastened on the vertical face, not on the horizontal plane).
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;(5) Seam: Must be either a Standing Seam (illustrated on top face) or an S-lock (illustrated for the vertical faces; also see inset illustrations).  The use of acceptable seams allows for multi-directional expansion and contraction of sheet metal.
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;(6) Standing Seam Clip: Fastened into substrate.
  
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(1) <b>Expansion: </b>Allowances should be made for expansion and contraction. Soldered joints are not acceptable.
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(2) <b>Underlayment:</b> Membrane under cap flashing. See {{hilite | <i>RGC Guarantee Standard A5.6</i> || 2016-November-19 }}
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=== RELATED WORK BY OTHERS ===
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;(A) Parapet Structure:
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;(B) Parapet woodwork (sloped toward roof surface):  
  
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(3) <b>Clips: </b>Standing seams are fastened to wood blocking before applying the following length, using nails and clips.
 
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(4) <b>Fasteners: </b>S-locks and Double S-locks are nailed through the single leaf before applying the following length. See <i>RGC Guarantee Standard A6.8</i>
 
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(5) <b>Metal Cap Flashing: </b>Fastened with continous concealed clips or cladding screws evenly spaced between seams. See {{hilite | <i>RGC Guarantee Standard A6.10 || 2016-November-19 }} for requirements.</i>
 
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*Further detail on fastening of flashing is detailed in the SMACNA Manual referenced in Section 10.2
 
 
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'''NOTE''': See the related Standard for additional requirements.
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'''NOTE''': Refer to '''''RoofStar Guarantee Standards''''' for additional requirements.
 
  
 
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[[Metal Flashing Details|<i class="fa fa-chevron-circle-left fa" ></i> Back to ''Metal Flashing Details'']]
 
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Latest revision as of 17:40, 13 December 2022



Division D - Construction Details

LMF | Metal Cap Flashing (joints)

Notice to Reader
Images used in a Construction Detail are representative and not prescriptive. Nor are they necessarily drawn to scale. Rather, they are provided to visually convey the requirements of the Standard they represent. Unless otherwise required by the Standard, dimensions, the selection of materials and their application remains the responsibility of the Design Authority.

The full text of the referenced requirements can be read in any Standard and may be read by using the blue hyperlinks
SBS Details

MF - Metal Cap Flashing (joints) - A.png
MF - Metal Cap Flashing (joints) - B.png

MF - Standing Seam.png

MF - S-Lock, Single.png

MF - S-Lock, Double.png


1 WORK INCLUDED

(1) Metal cap (coping) flashing
Fabricate and install in keeping with the requirements in Part 13, "Linear Metal Flashings". Base membrane must extend across the top of the parapet (to waterproof the structure and separate the metal from moisture-susceptible substrates) and extend down the outside face of the parapet at least 50 mm (2”). Edges must be hemmed (1a), although a kicked-out drip edge is optional.
(2) Drip edge
Optional but recommended.
(3) Fasteners
Select for compatibility with metal flashing, membrane and substrate (Article 13.2.1.3., "Fasteners").
(4) Concealed "wind" clips
Install cap flashings using a continuous or discontinuous metal ‘wind’ clip affixed to the outside face of the parapet, or to the top of the parapet (see Alternate illustration). Refer to Part 13 in the related Standard for securement requirements (Note that clips must be fastened on the vertical face, not on the horizontal plane).
(5) Seam
Must be either a Standing Seam (illustrated on top face) or an S-lock (illustrated for the vertical faces; also see inset illustrations). The use of acceptable seams allows for multi-directional expansion and contraction of sheet metal.
(6) Standing Seam Clip
Fastened into substrate.

2 RELATED WORK BY OTHERS

(A) Parapet Structure
(B) Parapet woodwork (sloped toward roof surface)

NOTE: See the related Standard for additional requirements.

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