Duro-Last ISO II User Manual
Duro-guard, Iso ii, Flat and tapered panels
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Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.
Updated: 10/31/2013
DURO-GUARD
®
ISO II
FLAT AND TAPERED PANELS
1 of 2
www.duro-last.com 800-248-0280
Figure 1. Duro-Guard ISO II Flat On Steel Deck
Figure 2. Duro-Guard ISO II Taper
TABLE 1. TYPICAL TAPER PANEL DIMENSIONS
ID SLOPE* SIZE
MIN
MAX
Q
½” per ft.
4%
4 ft. x 4 ft.
½”
2-½”
½” per ft.
4%
4 ft. x 4 ft.
2-½”
4-½”
X
¼” per ft.
2%
4 ft. x 4 ft.
½”
1-½”
Y
¼” per ft.
2%
4 ft. x 4 ft.
1-½”
2-½”
Z
¼” per ft.
2%
4 ft. x 4 ft.
2-½”
3-½”
G
¼” per ft.
2%
4 ft. x 4 ft.
1”
2”
H
¼” per ft.
2%
4 ft. x 4 ft.
2”
3”
AA
⅛” per ft.
1%
4 ft. x 4 ft.
½”
1”
A
⅛” per ft.
1%
4 ft. x 4 ft.
1”
1-½”
B
⅛” per ft.
1%
4 ft. x 4 ft.
1-½”
2”
C
⅛” per ft.
1%
4 ft. x 4 ft.
2”
2-½”
* Contact Duro-Last for additional slope options.
Description:
Duro-Guard
®
ISO II is a closed-cell polyisocyanurate
foam core insulation board with an integrally
laminated, fiber-reinforced facer which is compatible
with Duro-Last
®
roof membranes.
Available in both flat and tapered panels in
order to meet thermal insulation needs as well
as provide slope for proper roof drainage.
Manufactured with a blowing agent that has
zero ozone depletion potential (ODP) and
virtually no global warming potential (GWP).
Approved for direct application to steel and
other deck types.
Available in two grades of compressive
strength per ASTM C 1289:
o Type II, Class 1, Grade 2 (20 psi).
o Type II, Class 1, Grade 3 (25 psi).
Refer to Table 3 for physical properties.
Recommended Uses:
Mechanically attached Duro-Last roof systems.
Adhered/Fully Bonded Duro-Last roof systems.
Duro-Bond
®
roof systems.
Metal retrofit roof systems.
Underwriters Laboratories, Inc. Classifications:
UL
1256.
Insulated Metal Deck Constructions:
o No. 120, 123, 292.
UL
790.
UL 263 Hourly Rated P Series Roof
Assemblies.
UL Classified for use in Canada.
Factory Mutual Approvals:
FM 4450, FM 4470.
Approved for Class 1 insulated steel, wood,
concrete and gypsum roof deck construction.
Refer to FM Approval’s RoofNav for details on
FM Approved systems (www.roofnav.com).
Flat Panels:
Available
sizes:
o 4 ft. x 4 ft.
o 4 ft. x 8 ft.
o Thicknesses: 1 to 4 inches.
Refer to Table 2 for R-value and flute
spanability.
Tapered Panels:
Available
sizes:
o 4 ft. x 4 ft.
o Thicknesses: ½ to 4-½ inches.
Precut miters and crickets are also available.
Taper designs and shop drawings available.