Most Widely Accepted and Trusted
0
ESR-3532
ICC-ES Report
ICC-ES
000| (800) 423-6587 | (562) 699-0543 | www.icc-es.org
Reissued 01/2017
This report is subject to renewal 01/2019.
DIVISION: 07 00 00—THERMAL AND MOISTURE PROTECTION
SECTION: 07 31 13—ASPHALT SHINGLES
REPORT HOLDER:
IKO INDUSTRIES LIMITED
40 HANSEN ROAD SOUTH
BRAMPTON, ONTARIO L6W 3H4
CANADA
EVALUATION SUBJECT:
IKO THREE-TAB SHINGLES: MARATHON 20, MARATHON 25, MARATHON 25 AR AND
MARATHON ULTRA AR; IKO LAMINATED SHINGLES: CAMBRIDGE, CAMBRIDGE HD,
BILTMORE AR, CAMBRIDGE AR AND ARMOURSHAKE; ACCESSORIES: LEADING EDGE
PLUS STARTER STRIP AND HIP & RIDGE
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“2014 Recipient of Prestigious Western States Seismic Policy Council
(WSSPC) Award in Excellence”
ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not
specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a
recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as
to any finding or other matter in this report, or as to any product covered by the report.
Copyright © 2016 ICC Evaluation Service, LLC. All rights reserved.
A Subsidiary of
ICC-ES Evaluation Report
ESR-3532
Reissued January 2017
This report is subject to renewal January 2019.
www.icc-es.org | (800) 423-6587 | (562) 699-0543
DIVISION: 07 00 00—THERMAL AND MOISTURE
PROTECTION
Section: 07 31 13—Asphalt Shingles
REPORT HOLDER:
IKO INDUSTRIES LIMITED
40 HANSEN ROAD SOUTH
BRAMPTON, ONTARIO L6W 3H4
CANADA
(800) 268-0878 EXT. 4402
www.iko.com
EVALUATION SUBJECT:
IKO THREE-TAB SHINGLES: MARATHON 20,
MARATHON 25, MARATHON 25 AR, AND MARATHON
ULTRA AR
IKO LAMINATED SHINGLES: CAMBRIDGE, CAMBRIDGE
HD, BILTMORE AR, CAMBRIDGE AR AND
ARMOURSHAKE
ACCESSORIES: LEADING EDGE PLUS STARTER STRIP
AND HIP & RIDGE
1.0 EVALUATION SCOPE
Compliance with the following codes:
®
 2012 and 2009 International Building Code (IBC)
®
 2012 and 2009 International Residential Code (IRC)
Properties evaluated:
 Weather resistance
 Fire classification
 Wind resistance
2.0 USES
The IKO asphalt shingles described in this report comply
with IBC Section 1507.2 and IRC Section R905.2 and are
Class A roof coverings when installed as described in this
report.
3.0 DESCRIPTION
3.1 General:
The products are available as three-tab shingles and as
laminated shingles. See Table 1 for product names, overall
dimensions, maximum exposure to the weather, location of
nail line and classification per ASTM D7158 or ASTM
D3161, as applicable. See Table 2 for accessory products.
See Figures 1 and 2 for typical installation details.
A Subsidiary of the International Code Council ®
3.2 Three-tab Shingles
Marathon 20, Marathon 25, Marathon 25 AR and Marathon
Ultra AR are three-tab shingles manufactured with a single
fiberglass mat, coated on both sides with asphalt and
surfaced with ceramic mineral granules. The shingles are
self-sealing and have 0.24-inch-by-2.24-inch (6.1 mm by
56.9 mm) thermal sealing adhesive buttons spaced 1 inch
(25 mm) apart and located at the centerline of the shingle,
5
6 /8 inches (168 mm) up from the butt edge of the shingle.
3.3 Laminated Shingles:
Cambridge, Cambridge HD, Biltmore AR, Cambridge AR,
and Armourshake are laminated shingles manufactured
with a double layer of fiberglass mat coated with asphalt on
all sides and surfaced with mineral granules. The shingles
are self-sealing with thermal sealing adhesive buttons
located 1 inch (25.4 mm) above the shingle butt on the
unexposed side of the shingle. (Exception: The self-sealing
thermal adhesive for the Armourshake shingle is located
on the back of the shingle.)
3.4 Accessory Shingles:
3.4.1 Leading Edge Plus Starter Strips: These are
factory-made shingles used under the first course of
shingles being installed or applied on the roof. The
shingles are perforated in the middle for separation into
two starter pieces.
3.4.2 Hip and Ridge Shingles: Hip and Ridge is a
single-layer fiberglass shingle impregnated with asphalt
and having a mineral algae-resistant granular exposed
surface. The shingles are scored for separation into four
pieces.
3.5 Fasteners:
Fasteners must comply with ASTM F1667 and must be
minimum No. 12 gage [0.105-inch-diameter (2.67 mm)
3
shank], /8-inch-diameter-head (9.5 mm), galvanized,
stainless steel, aluminum or copper, barbed-, deformed-,
or smooth-shank roofing nails. Fasteners must be of
3
sufficient length to penetrate /4 inch (19.1 mm) into the
sheathing, or through the sheathing, whichever is less.
3.6 Underlayment:
Underlayment must comply with ASTM D226 Type I or
Type II, ASTM D4869 Type I or Type II, or ASTM D6757.
In areas where there has been a history of ice forming
along the eaves causing a backup of water, an ice dam
barrier in accordance with IBC Section 1507.2.8.2 or IRC
Section R905.2.7.1 must be provided.
3.7 Asphalt Cement:
Asphalt roofing cement used for hand-sealing the shingles
must comply with ASTM D4586, Type I, Class I, or Type II,
Class I.
ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed
as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as
to any finding or other matter in this report, or as to any product covered by the report.
1000
Copyright © 2016 ICC Evaluation Service, LLC. All rights reserved.
Page 1 of 5
ESR-3532 | Most Widely Accepted and Trusted
4.0 Installation:
4.1 New Construction:
4.1.1 General: When installed on new construction in
accordance with this section and the IKO Industries
Limited installation instructions, the shingles are a Class A
roof covering. The shingles, underlayment and flashings
must be installed in accordance with IBC Section 1507.2 or
IRC Section R905.2 except as noted in this report. The
shingles must be installed over roof decks of code3
complying, minimum /8-inch-thick (9.5 mm) exterior-grade
7
plywood; /16-inch-thick (11.1 mm) oriented strand board
(OSB); or nominally 1-inch-by-6-inch lumber installed as
solid sheathing conforming to IBC Sections 2304.7.2 and
2308.10.8 and underlayment specified in Section 3.6.
Minimum roof slope must be 2:12 (16.7 percent). See
Figures 1 and 2 for typical installation details.
A starter course of Leading Edge Plus or shingles
consisting of three-tab shingles, cut off at the top of the
cut-out, is attached to the eave and rake edges using
fasteners located 3 to 4 inches (76 to 102 mm) from the
eave edge and spaced 1 inch (25.4 mm) and 12 inches
(305 mm) from each end, for a total of four fasteners per
shingle. The starter strip must overhang the eave and rake
1
edges by a at least a nominal /4 inch. The first course of
field shingles is then installed over the starter course.
The shingles are located with vertical joints in three-tab
shingles offset a minimum of one quarter of the tab width
from adjacent courses; in laminated shingles the vertical
joints must be offset a minimum of 4 inches (102 mm).
4.1.2 Application:
4.1.2.1 Fastening: Fasteners are as described in Section
3.5. For roof slopes of 2:12 to 21:12, each shingle is
fastened to the roof deck using a minimum of four
fasteners, spaced as shown in Figures 1 and 2. For roof
slopes over 21:12, six fasteners are used, spaced as
shown in Figures 1 and 2. Fasteners must be placed
on the fastener line. Maximum exposure to the weather
5
is 5 /8 inches (143 mm) for three-tab shingles, and
3
5 /4 inches (146 mm) for laminated shingles.
4.1.2.2 Shingle Sealing: In colder climates or wind
regions where it is questionable whether the thermalsealing adhesive will activate and seal the shingles, the
shingles must be hand-sealed. For three-tab shingles,
each tab is sealed to the roof deck with a 1-inch-diameter
(25.4 mm) spot of asphalt cement, placed at the center of
1
the tab, 1 /2 inches (38 mm) up from the bottom edge. For
laminated shingles, three 1-inch-diameter (25.4 mm) spots
are applied per shingle, spaced equally along a line
1
6 /4 inches (159 mm) below the top edge of the previous
course of shingles. Overlying shingles are sealed by
having them embedded in the cement spots. For
applications on slopes greater than 21:12, hand-sealing is
required. Refer to the hand-sealing guidelines in the report
holder’s published installation instructions. The shingles
must be hand-sealed to the satisfaction of the code official.
4.1.3 Hip and Ridge Shingles: Hip and ridge shingles
are placed evenly over hips and ridges, and are fastened
to the roof deck using two fasteners, one located on either
1
side of the shingle, 6 /8 inches (mm) from the exposed end
and 1 inch (25.4 mm) up from the edge. Hip and ridge
5
shingles are installed with a maximum 5 /8-inch (143 mm)
exposure to the weather. Hips and ridges for laminated
shingle roofs may be double thickness.
4.1.4 Valleys: Valleys must be constructed as required
by IBC Section 1507.2.9.2 or IRC Section R905.2.8.2
except as follows:
Page 2 of 5
Metal valley flashing used in open valleys must extend
12 inches (305 mm) from the centerline, each way.
Underlayment placed directly under the valley flashing or
beneath closed-cut valleys must be 36 inches wide
(914 mm), and either minimum 50-pound-per-100-square2
foot (2.4 kg/m ) felt underlayment or a membrane
complying with ASTM D1970.
4.2 Reroofing:
When installed over existing Class A or Class C asphalt
shingle roofs in accordance with this section, the shingles
described in this report are recognized as a Class A roof
covering. The existing asphalt shingle roof covering must
be inspected in accordance with the provisions and
limitations of Section 1510 of the IBC or Section R907 of
the IRC. Prior to the reroofing, hip and ridge covering must
be removed. Except as noted in this section, the shingles
must be installed in accordance with Section 4.1 of this
report. Fasteners must be of sufficient length to penetrate
3
/4 inch (19.1 mm) into the sheathing, or through the
sheathing, whichever is less. Flashing and edging must
comply, as applicable, with IBC Sections 1510.5 and
1510.6 and/or IRC Sections R907.5 and R907.6.
5.0 CONDITIONS OF USE
The IKO Industries Limited asphalt shingles described in
this report comply with, or are suitable alternatives to what
is specified in, those codes listed in Section 1.0 of this
report, subject to the following conditions:
5.1 The products must be manufactured, identified, and
installed in accordance with the applicable codes, this
report, and the manufacturer’s published installation
instructions. In the event of a conflict between this
report and the manufacturer’s published installation
instructions, this report governs.
5.2 Application must be in accordance with Section 4.1.2
of this report.
5.3 The products are manufactured in Sumas,
Washington, under a quality control program with
inspections by ICC-ES.
6.0 EVIDENCE SUBMITTED
6.1 Data in accordance with ASTM D3462.
6.2 Reports of wind resistance testing in accordance with
ASTM D7158.
6.3 Reports of testing in accordance with FM 4475,
including wind resistance testing in accordance with
ASTM D3161.
6.4 Reports of testing in accordance with ASTM E108.
6.5 Quality documentation.
7.0 IDENTIFICATION
Each bundle of shingles must bear a label with the name
and address of the IKO manufacturing plant location; the
product name; the roof classification (Class A); the
installation instructions; the evaluation report number
(ESR-3532); a reference to compliance with ASTM D3462,
and ASTM D7158, Class H, or ASTM D3161, Class F,
as applicable.
Additionally, in accordance with ASTM D3462, each
bundle of shingles must be marked with the area of roof
surface covered and the style, type and color of the
product.
ESR-3532 | Most Widely Accepted and Trusted
Page 3 of 5
TABLE 1—IKO SHINGLES AND PRODUCT DESCRIPTIONS
TYPE
PRODUCT NAME2
DIMENSIONS
[height × width]
(inches)
MAXIMUM
EXPOSURE
(inches)
LOCATION OF
NAIL LINE1
(inches)
CLASS
Marathon 20
131/4 x 393/8
55/8
61/8
ASTM D7158
Class H
5
1
Marathon 25
13 /4 x 39 /8
5 /8
6 /8
ASTM D7158
Class H
ASTM D3161
Class F
Marathon 25 AR
131/4 x 393/8
55/8
61/8
ASTM D7158
Class H
ASTM D3161
Class F
Marathon Ultra AR
131/4 x 393/8
55/8
61/8
ASTM D7158
Class H
ASTM D3161
Class F
Cambridge
Biltmore AR
133/4 x 407/8
57/8
61/4
ASTM D7158
Class H
ASTM D3161
Class F
Cambridge HD
133/4 x 407/8
57/8
61/4
ASTM D7158
Class H
ASTM D3161
Class F
Cambridge AR
133/4 x 407/8
57/8
61/4
ASTM D7158
Class H
ASTM D3161
Class F
1
1
Three-tab shingles
1
3
Laminated shingles
Armourshake
1
3
18 /2 x 37 /8
5 /2
ASTM D7158
Class H
ASTM D3161
Class F
6 /4
For SI: 1 inch = 25.4 mm
1
2
Nail line = distance from lowermost edge of shingle to target nail location. See Figures 1 and 2.
Products may have “AR” added to their product names to designate shingles produced with algae-resistant granules.
TABLE 2—ACCESSORY PRODUCTS AND PRODUCT DESCRIPTIONS
PRODUCT1
DIMENSIONS
[width x length]
(inches)
MAXIMUM EXPOSURE
Leading Edge Plus Starter Strip
65/8 X 393/8
N/A
Hip and Ridge
131/4 X 393/8
55/8
For SI: 1 inch = 25.4 mm
1
Products may have “AR” added to their product names to designate shingles produced with algae-resistant granules.
ESR-3532 | Most Widely Accepted and Trusted
DO NOT NAIL INTO OR ABOVE SEALING STRIP
Page 4 of 5
DO NOT NAIL INTO OR ABOVE SEALING STRIP
FIGURE 1—THREE-TAB SHINGLES
ESR-3532 | Most Widely Accepted and Trusted
Page 5 of 5
OPEN VALLEY:
A. Underlayment applied over entire deck.
B. Valley Flashing: metal, minimum 28 gauge, minimum 24″ width.
C. Chalk Lines: 6″ apart at the top and increasing in width 1/8″ per
foot towards the bottom.
D. Shingle: cut a 2″ triangle off the corner to direct water into the
valley.
E. Asphalt cement.
FIGURE 2—LAMINATED SHINGLES