Duro-Last ISO HD User Manual

DURO-GUARD® ISO HD

Description:

Duro-Guard polyisocyanurate insulation panel specifically designed for use as a cover/recover board. It is manufactured on-line using premium performance coated glass facers.

 R-value of 2.5 is significantly higher than roof

 Lightweight (11 lbs. per 4 ft. x 8 ft. panel).

 Easy to cut, handle and install.

 Manufactured with a blowing agent that has

 Recycled content > 8%.

 Compressive Strength > 90 psi.

 4 pcf density provides enhanced physical

 Passes ASTM Resistance to Mold Test.

 Refer to Table 1 for physical properties.

Recommended Uses:

 Mechanically attached Duro-Last

 Adhered/Fully Bonded Duro-Last roof systems.

 Duro-Bond

 Metal retrofit roof systems.

Underwriters Laboratories, Inc. Classifications:

 Refer to Duro-Last’s UL Listings

Factory Mutual Approvals:

 FM 4450, FM 4470.

 Refer to FM Approval’s RoofNav for details on

Flat Panels:

 Available size:

ISO HD is a ½ inch thick high density

cover boards made of wood fiber or gypsum.

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

properties.

roof

systems.

roof systems.

(TGFU.R10128) for assembly details.

FM Approved systems (www.roofnav.com).

o 4 ft. x 8 ft. o 4 ft. x 4 ft. o Thicknesses: ½ inch.

Figure 1. Duro-Guard ISO HD (Shown as Recover Board)

TABLE 1. PHYSICAL PROPERTIES – COVER BOARD

Compressive

Strength

Dimensional

Stability

Water

Absorption

Resistance to

Mold

Service

Temperature

ASTM D 1621 > 90 PSI

ASTM D 2126

ASTM C 209 < 1% volume

ASTM D 3273 Passed

260° F (126° C) or less

< .5 % linear change

(7 days)

Installation:

 In steel deck applications, Duro-Guard ISO HD

can only be used as a cover board over insulation or as recover board over an existing roof. It may be placed directly on flute filler in a metal roof retrofit application assuming the flutes are completely filled.

 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.

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

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DURO-GUARD® ISO HD

 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. o 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 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.

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

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.

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

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