Duro-Last ISO II User Manual

DURO-GUARD® ISO II

FLAT AND TAPERED PANELS

Description:

Duro-Guard foam core insulation board with an integrally laminated, fiber-reinforced facer which is compatible with Duro-Last

 Available in both flat and tapered panels in

 Manufactured with a blowing agent that has

 Approved for direct application to steel and

 Available in two grades of compressive

 Refer to Table 3 for physical properties.

Recommended Uses:

 Mechanically attached Duro-Last roof systems.

 Adhered/Fully Bonded Duro-Last roof systems.

 Duro-Bond

 Metal retrofit roof systems.

Underwriters Laboratories, Inc. Classifications:

ISO II is a closed-cell polyisocyanurate

roof membranes.

order to meet thermal insulation needs as well as provide slope for proper roof drainage.

zero ozone depletion potential (ODP) and virtually no global warming potential (GWP).

other deck types.

strength per ASTM C 1289:

o Type II, Class 1, Grade 2 (20 psi). o Type II, Class 1, Grade 3 (25 psi).

roof systems.

Figure 1. Duro-Guard ISO II Flat On Steel Deck

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.

 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:

Figure 2. Duro-Guard ISO II Tape

 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).

Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.

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Updated: 10/31/2013

TABLE 1. TYPICAL TAPER PANEL DIMENSIONS

ID SLOPE* SIZE MIN MAX

Q ½” per ft. 4% 4 ft. x 4 ft. ½” 2-½”

QQ 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.

ast.co

800

DURO-GUARD® ISO II

Installation:

 Panels must be kept dry before, during and

after installation. Install only as much insulation as can be covered the same day with completed roofing.

 The use of multiple layers of insulation with

joints staggered a minimum of 6 inches between layers is recommended to eliminate thermal bridging.

 Abut panel edges together and stagger joints of

adjacent panels.

 Boards must be neatly fitted to roof deck and

around penetrations with no gaps greater than ¼ inch.

 Refer to the appropriate Duro-Last roof system

specification and detail drawings for deck preparation and attachment requirements.

 Precautions must be taken to ensure that new

concrete decks have fully hydrated and do not continue to release moisture.

Panel Attachment:

 Panels may be attached to the roof deck using

mechanical fasteners, insulation adhesive or hot bitumen. It is acceptable to use these products in combination.

Mechanical Attachment

 When installing multiple layers (which may

include insulation, cover boards and thermal barriers) it is acceptable to mechanically secure through all layers.

 Use fasteners and plates supplied by or

approved by Duro-Last, Inc.

Adhesive Attachment

 Insulation adhesive must be supplied by Duro-

Last, Inc. Refer to the adhesive’s product data sheet for application guidelines. Acceptable products:

o Duro-Grip o Duro-Grip Olybond o Duro-Grip Millenium Weather-Tite

Insta-Stik™.

o Duro-Grip CR-20.

 Subsequent layers of insulation and approved

cover boards may be attached with insulation adhesive.

 Maximum panel dimensions are 4 ft. x 4 ft.

Hot Bitumen Attachment

 When using hot bitumen on concrete decks,

priming is necessary.

 Temperature of the bitumen shall be

approximately 50° F below the inter-ply hand mopping EVT.

 The deck shall be dry and care must be taken

to apply the bitumen in sufficient quantity to

TABLE 2. THERMAL VALUES

THICKNESS*

inches mm inches mm

1.00 25 5.60 2.625 67

1.50 38 8.50 4.375 111

1.60 41 9.10 4.375 111

1.70 43 9.60 4.375 111

2.00 51 11.40 4.375 111

2.50 64 14.40 4.375 111

2.70 69 15.60 4.375 111

3.00 76 17.40 4.375 111

3.30 84 19.20 4.375 111

3.50 89 20.50 4.375 111

3.60 91 21.10 4.375 111

4.00 102 23.60 4.375 111

* Contact Duro-Last for additional thickness options.

TABLE 3. TYPICAL PHYSICAL PROPERTIES

Compressive

Strength

Dimensional

Stability

Moisture Vapor

Transmission

Water

Absorption

Service

Temperature

LTTR

R-VALUE

ASTM D 1621 ASTM C 1289

ASTM D 2126

ASTM E 96

ASTM C 209 < 1% volume

FLUTE SPANABILITY

Grade 2

Grade 3

2% linear change

(85.0 ng/Pa·s·m

-40° to 200° F

(-40° to 93° C)

20 psi

(138 kPa)

25 psi

(172 kPa)

(7 days)

< 1 perm

)

totally cover the available deck surface.

 To ensure embedment, the board shall also be

“stepped in” at several points while the bitumen is still hot enough to allow positive attachment.

 Maximum panel dimensions are 4 ft. x 4 ft.

 Any roof membrane contaminated with bitumen

must be replaced.

Storage:

 Insulation must be protected from open flame

and kept dry at all times.

 Factory applied packaging is intended only for

protection during transit. Slit or remove the packaging to prevent accumulation of condensation.

 Store elevated (at least 3 inches) and

completely covered with a weatherproof covering such as a tarpaulin.

 Do not use panels which are wet or damaged.

 Refer to PIMA Technical Bulletin No. 109:

Storage and Handling Recommendations for Polyiso Roof Insulation for additional guidelines

(www.pima.org).

Limitations:

 Duro-Last, Inc. will not be responsible or liable

for any defects or problems related to building or roof design by others, to deficiencies in construction, to dangerous conditions on the job site, or to improper storage, handling or installation by others.

Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.

2of 2www.duro-l

Updated: 10/31

-248-02

2013