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DURO-GUARD SECUROCK GLASS-MAT 1/4-INCH ROOF BOARD

Installation:
 Subsequent layers of insulation and approved
 In steel deck applications, refer to Table 1 for cover boards may be attached with insulation
flute spanability. adhesive.

 Panels must be kept dry before, during and Hot Bitumen Attachment
after installation. Install only as much insulation
as can be covered the same day with  When using hot bitumen on concrete decks,
priming is necessary.
completed roofing.
 Temperature of the bitumen shall be
 The use of multiple layers of insulation with
joints staggered a minimum of 6 inches approximately 50° F below the inter-ply hand
mopping EVT.
between layers is recommended to eliminate
thermal bridging.  The deck shall be dry and care must be taken
to apply the bitumen in sufficient quantity to
 Abut panel edges loosely (minimum of 1/16- totally cover the available deck surface.
inch gap on all sides) and stagger joints of
adjacent panels. Gaps may need to be larger  To ensure embedment, the board shall also be
depending on factors like the roof deck's size, “stepped in” at several points while the bitumen
membrane color, deck surface temperature and is still hot enough to allow positive attachment.
time of year the roof assembly is installed.
 Any roof membrane contaminated with bitumen
 Gaps must be no greater than 1/4 inch around must be replaced.
all penetrations.
Storage:
 Refer to the appropriate Duro-Last roof system
specification and detail drawings for deck  Must be protected from open flame and kept
preparation and attachment requirements. dry at all times.
 Precautions must be taken to ensure that new  Factory applied packaging is intended only for
concrete decks have fully hydrated and do not protection during transit. Slit or remove the
continue to release moisture. packaging to prevent accumulation of
condensation.
Panel Attachment:
 Store elevated (at least 3 inches) and
 Panels may be attached to the roof deck using completely covered with a weatherproof
mechanical fasteners, insulation adhesive or covering such as a tarpaulin.
hot bitumen. It is acceptable to use these
products in combination.  Do not use panels which are wet or damaged.
Mechanical Attachment  Refer to PIMA Technical Bulletin No. 109:
Storage and Handling Recommendations for
 When installing multiple layers (which may Polyiso Roof Insulation for additional guidelines
include insulation, cover boards and thermal (www.pima.org).
barriers) it is acceptable to mechanically secure
through all layers. Limitations:

 Use fasteners and plates supplied by or  Duro-Last, Inc. will not be responsible or liable
approved by Duro-Last, Inc. for any defects or problems related to building
or roof design by others, to deficiencies in
Adhesive Attachment construction, to dangerous conditions on the
job site, or to improper storage, handling or
 Insulation adhesive must be supplied by Duro-
Last, Inc. Refer to the adhesive’s Product Data installation by others.
Sheet for application guidelines. Acceptable
products:
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o Duro-Grip Insta-Stik™.
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o Duro-Grip Olybond500 .
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o Duro-Grip Millenium Weather-Tite .
o Duro-Grip CR-20.

www.duro-last.com 2 of 2 800-248-0280

Duro-Last, Duro-Guard, Duro-Grip, Duro-Bond and “World’s Best Roof” are registered marks owned by Duro-Last, Inc. Weather-Tite is a registered mark owned by Millenium Adhesive Company.
Securock is a registered mark owned by USG Corporation. RoofNav is a registered mark owned by FM Global. Olybond500 is a registered mark owned by OMG, Inc.
Created: 01/12/2015 Revised: 05/07/2015