Difference between revisions of "Asphalt Shingles - Diverter Flashing"

Revision as of 15:24, 18 October 2019

RoofStar Guarantee Standards are blue-linked

Asphalt Shingle Details

Click on any image to expand it

1 WORK INCLUDED

(1) Step 1: Use a standard 225 mm (9”) long step flashing and scribe the fold lines as shown on the illustration. Note that the down-slope upstand is bent at a 110-degree angle to the slope. No cutting is needed or appropriate; the flashing is formed with folds, bread-pan style.
(2) Step 2: Fold the bottom end of the flashing as illustrated, so that the bottom upstand aligns with the vertical bread-pan fold made in the next step.
(3) Step 3: Fold the back flap around and behind the main upstand, bread-pan style.
(4) Step 4: If required or desirable, cut a capillary notch in the bottom upstand (illustrated), and trim the upstand to suit the aesthetics of the roof.

2 RELATED WORK BY OTHERS

None

NOTE: Refer to RoofStar Guarantee Standards for additional requirements.

RoofStar Guarantee Standards for Asphalt Shingle Systems

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+|-
+| [[File:ASh 10.1.2-1 CD.jpg|class=img-responsive | link=http://rpm.rcabc.org/images/a/a9/ASh_10.1.2-1_CD.jpg]] || [[File:ASh 10.1.2-2 CD.jpg|class=img-responsive | link=http://rpm.rcabc.org/images/9/90/ASh_10.1.2-2_CD.jpg]]
+|-
+| [[File:ASh 10.1.2-3 CD.jpg|class=img-responsive | link=http://rpm.rcabc.org/images/2/25/ASh_10.1.2-3_CD.jpg]] || [[File:ASh 10.1.2-4 CD.jpg|class=img-responsive | link=http://rpm.rcabc.org/images/3/3b/ASh_10.1.2-4_CD.jpg]]
+|}
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 === WORK INCLUDED ===
-;(1) [[RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies#LSUNDERLAYMENT|'''Underlayment & Eave Protection''']]: One ply of self-adhered modified bituminous underlayment material. Lap 50 mm (2") minimum on sides and 150 mm (6") minimum on ends. Also refer to the [[Eave Protection & Underlayment (Asphalt Shingles, Cedar Shakes & Shingles)|'''Accepted Materials''']] section of this Manual.
+;(1) [[RoofStar Guarantee Standards for Asphalt Shingle Systems#AShDIVERTER|'''Step 1''']]: Use a standard 225 mm (9”) long step flashing and scribe the fold lines as shown on the illustration.  Note that the down-slope upstand is bent at a 110-degree angle to the slope.  No cutting is needed or appropriate; the flashing is formed with folds, bread-pan style.
-;(2) '''Edge Metal Flashing''': Optional (cf. [[RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies#LSEDGE|'''2.2.9 Wood Deck Overlay Sheathing (Non-Structural)''']] for specific requirements), installed to manufacturer's printed instructions.
+;(2) [[RoofStar Guarantee Standards for Asphalt Shingle Systems#AShDIVERTER|'''Step 2''']]: Fold the bottom end of the flashing as illustrated, so that the bottom upstand aligns with the vertical bread-pan fold made in the next step.
-;(3) [[RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies#LSSTARTER|'''Starter Course''']]: Consists of same type shingles used for roof, applied tabs facing up the slope.
+;(3) [[RoofStar Guarantee Standards for Asphalt Shingle Systems#AShDIVERTER|'''Step 3''']]: Fold the back flap around and behind the main upstand, bread-pan style.
-;(4) '''Strip or Standard Shingles''': Applied as recommended by manufacturer. Laminated shingles are <u>not</u> acceptable for this application.
+;(4) [[RoofStar Guarantee Standards for Asphalt Shingle Systems#AShDIVERTER|'''Step 4''']]: If required or desirable, cut a capillary notch in the bottom upstand (illustrated), and trim the upstand to suit the aesthetics of the roof.
-;(5) '''Compatible Mastic''': Heavy bead of compatible asphaltic mastic at rakes (gables) and valleys.
-;(6) [[RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies#ASPROTRUSIONS|'''Protrusions''']]: Curbs and skylights must be flashed with underlayment so as to shed water, with minimum 125mm (5") up vertical surfaces and 150 mm (6") lapping onto field surfaces. Vent stack underlayment flashing should fit tight to the vent pipe and be sealed with compatible mastic. For fire-rated stacks or hot pipe protrusions, strip in secondary metal deck flashing before installing rated stack / pipe flashing.
-;(7) [[RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies#ASNAILING|'''Nailing''']]:  Note manufacturer's recommended nailing pattern. Placement varies with manufacturer.
 <hr>
 === RELATED WORK BY OTHERS ===
-;(A) [[RoofStar Guarantee Standards for Asphalt Shingles Roof Assemblies#ASDECK|'''Acceptable Deck''']]
+;None
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