Asphalt Shingle Systems Standard - Revision history

James Klassen: /* 10.3.5.5. Woven Valleys */

2026-03-27T16:46:12Z

‎10.3.5.5. Woven Valleys

James Klassen: /* 9.1.1.2. {{strike| Definitions || 2025-February-1 }}{{hilite | Defined Terms || 2026-February-1 }} */

2026-03-27T16:43:54Z

‎9.1.1.2. {{strike| Definitions || 2025-February-1 }}{{hilite | Defined Terms || 2026-February-1 }}

James Klassen: /* 10.3.5.6. Closed (Cut) Valleys */

2026-03-27T16:42:13Z

‎10.3.5.6. Closed (Cut) Valleys

James Klassen: /* 10.3.5.4. California Valleys */

2026-03-27T16:41:49Z

‎10.3.5.4. California Valleys

James Klassen: /* 10.3.5.3. Open Valleys */

2026-03-27T16:39:49Z

‎10.3.5.3. Open Valleys

James Klassen: /* 9.3.2.4. {{hilite | Shingle Nailing || 2027-February-1 }}{{strike| General Requirements for Asphalt Shingle Application || 2026-January-31 }} */

2026-03-26T22:25:37Z

‎9.3.2.4. {{hilite | Shingle Nailing || 2027-February-1 }}{{strike| General Requirements for Asphalt Shingle Application || 2026-January-31 }}

James Klassen at 18:28, 30 January 2026

2026-01-30T18:28:37Z

Show changes

James Klassen: /* 3.3.2.1. Securing Systems with Mechanical Fasteners */

2025-11-13T18:43:52Z

‎3.3.2.1. Securing Systems with Mechanical Fasteners

James Klassen: /* 13.2.1.2. Sheet Metal Grade and Gauge */

2025-07-22T18:28:27Z

‎13.2.1.2. Sheet Metal Grade and Gauge

Show changes

James Klassen at 16:29, 5 February 2025

2025-02-05T16:29:13Z

Show changes

@@ Line 2,359: / Line 2,359: @@
 <ol>
-<li>Woven valleys must be constructed only with single-layer three-tab shingles and are not acceptable for laminated shingles.
+<li>Woven valleys must be constructed only with single-layer ''three-tab asphalt shingles'' and are not acceptable for ''laminated asphalt shingles''.
 <li>Shingles must be installed in alternating courses, first on one side of the valley and then on the other, repeating this pattern so that the shingle from each course that lies across the valley overlaps the other, creating a "woven" pattern.
 <li>Shingles that extend across the valley

@@ Line 1,612: / Line 1,612: @@
 <li>Words that appear in italics are defined in the [[Glossary | Glossary]].  Additionally, the following terms are used in this Part:
 <ol>
-<li>{{hilite | ''Designer shingle'' means an asphalt shingle as described in Subsection 3.6 of the RGC Acceptance Criteria RGC ACWS-ASH || 2027-February-1  }}.
+<li>{{hilite | ''Designer asphalt shingle'' means an asphalt shingle as described in Subsection 3.6 of the RGC Acceptance Criteria RGC ACWS-ASH || 2027-February-1  }}.
-<li>{{hilite | ''Laminated shingle'' means an asphalt shingle as described in Subsection 3.6 of the RGC Acceptance Criteria RGC ACWS-ASH || 2027-February-1  }}.
+<li>{{hilite | ''Laminated asphalt shingle'' means an asphalt shingle as described in Subsection 3.6 of the RGC Acceptance Criteria RGC ACWS-ASH || 2027-February-1  }}.
-<li>{{hilite | ''Three-tab shingle'' means an asphalt shingle as described in Subsection 3.6 of the RGC Acceptance Criteria RGC ACWS-ASH || 2027-February-1  }}.
+<li>{{hilite | ''Three-tab asphalt shingle'' means an asphalt shingle as described in Subsection 3.6 of the RGC Acceptance Criteria RGC ACWS-ASH || 2027-February-1  }}.
 <li>''Manufacturer'' means the manufacturer of the primary roof covering, unless stated otherwise.
 <li>{{hilite | Overlap sealant strip means a heat-activated self-adhesive material applied to one or both faces of an asphalt shingle, which bonds successive courses of shingles together to resist lifting || 2027-February-1  }}.

@@ Line 2,376: / Line 2,376: @@
 <ol>
 <li>Closed-cut valley may be used only on roof slopes exceeding 1:3 (4" in 12"), and only if permitted in writing by the ''manufacturer''.
-<li>Closed-cut valleys shall not be used with laminated asphalt shingles.
+<li>Closed-cut valleys shall not be used with ''laminated asphalt shingles''.
 <li>Shingles must be pressed tightly into the valley.
 <li>No nails may be fastened within 152.4 mm (6”) of the valley center-line.

@@ Line 2,339: / Line 2,339: @@
 <ol>
-<li>"California" valleys (a variation on open valleys) are permissible for laminated shingles, subject to approval by the ''manufacturer'', and must be constructed in keeping with the requirements in this Article, or the ''manufacturer’s'' published installation requirements, whichever are greater.
+<li>"California" valleys (a variation on open valleys) are permissible for ''laminated asphalt shingles'', subject to approval by the ''manufacturer'', and must be constructed in keeping with the requirements in this Article, or the ''manufacturer’s'' published installation requirements, whichever are greater.
-<li>Laminated shingles used as a valley ''starter'' must be
+<li>''Laminated asphalt shingles'' used as a valley ''starter'' must be
 <ol>
 <li>laid end to end vertically up each side of the installed metal valley flashing, so that their bottom edges align with and are set back from the centre of the valley by at least 50.8 mm (2”) (use a chalk lines for guidance), and
 <li>nailed through the ''common bond'' using at least four (4) fasteners per shingle (Ref. [[#9.3.2.4. Shingle Nailing | Article 9.3.2.4.]]).
 </li></ol>
-<li>Laminated field shingles (uncut) must be
+<li>''Laminated asphalt shingles'' installed in the field (uncut) must be
 <ol>
 <li>laid perpendicular to the roof slope and overlap the valley ''starter'' shingles installed on either side of the valley centre line,

@@ Line 2,320: / Line 2,320: @@
 <ol>
 <li>lock-type shingles,
-<li>laminated asphalt shingles, and
+<li>''laminated asphalt shingles'',
 <li>all shingle applications on a ''low slope'' roof.
 </li></ol>

@@ Line 1,837: / Line 1,837: @@
 <li>{{hilite | ''Designer asphalt shingles'' installed|| 2027-February-1 }}
 <ol>
-<li>{{hilite | on ''low slopes'' and ''steep slopes'' shall be nailed in the ''manufacturer's'' designated fastening zone (line) with at least five (5) nails, as shown in the ''manufacturer's'' published instructions, and|| 2027-February-1 }}
+<li>{{hilite | on ''low slopes'' and ''common slopes'' shall be nailed in the ''manufacturer's'' designated fastening zone (line) with at least five (5) nails, as shown in the ''manufacturer's'' published instructions, and|| 2027-February-1 }}
 <li>{{hilite | on steep slopes shall be nailed with at least nine (9) nails conforming to the ''manufacturer's'' published pattern and shall, when required by the ''manufacturer'', must be additionally secured with spots of roofing cement (Type II) conforming to the requirements in [[#9.2.1.6. Roofing Cement | Article 9.2.1.6.]]; each spot of cement shall be applied to the underside of the shingle where required by the ''manufacturer'' and must measure between 22.23 mm (7/8") and  25.4 mm (1") in diameter|| 2027-February-1 }}.
 </li></ol>

@@ Line 954: / Line 954: @@
 | colspan="1"; style="text-align:center;width:450px;" | {{hilite | '''Figure 3.3.2.1.-A Fastener Penetration Into or Through Deck''' || 2026-February-1 }}<br>{{hilite | Forming Part of Sentence 3.3.2.1.(4). || 2026-February-1 }}<br><small>(Click to expand illustration)</small>
 |-
-| [[File:Figure 3.5.jpg|link=http://rpm.rcabc.org/images/9/95/Figure_3.5.jpg| 500 px]]
+| [[File:Figure 3.2 ASh.jpg|link=https://rpm.rcabc.org/images/5/59/Figure_3.2_ASh.jpg| 500 px]]
 |}