Duro-Last EPS Fan Fold User Manual
DURO-GUARD® EPS FAN FOLD
Description:
Duro-Guard
rigid expanded polystyrene (EPS) core and wrapped
with tough facers which create a durable water
resistant board. EPS is a closed cell foam which is
highly resistant to heat flow and moisture penetration.
The film facers are compatible with Duro-Last roof
membrane.
Use as a recover board over:
Inert, non-nutritive, and highly stable.
Contains no CFCs, HCFCs, HFCs or
Superior moisture resistance.
Type VIII, 1.25 pcf, per ASTM C 578.
Refer to Table 1 for physical properties.
®
EPS Fan Fold is manufactured with a
o Granulated or smooth cap sheets.
o Smooth built-up roof systems.
o Gravel surfaced built-up roofs.
o Single-Ply membranes.
formaldehyde.
Figure 1. Duro-Guard EPS Fan Fold
TABLE 1. TYPICAL PHYSICAL PROPERTIES
Property Test Method Type VIII
Density
(nominal)
ASTM C 303 1.25 pcf
Recommended Uses:
Mechanically attached Duro-Last roof systems.
Underwriters Laboratories Inc.:
Refer to Duro-Last’s UL Listings
(TGFU.R10128) for assembly details
(www.ul.com).
Figure 2. Duro-Guard EPS Fan Fold Dimensions
R-Value
(per inch)
@75°F
Compressive
Strength
(10% deformation)
Flexural Strength ASTM C 203 ≥ 30 psi
Water Vapor
Permeance
Water Absorption ASTM C 272 < 1.0%
Flame Spread ASTM E 84 20
Smoke Developed ASTM E 84 150 - 300
ASTM C 518
or
C 177
ASTM
D 1621
ASTM E 96 < 1.0 perm
Board Dimensions:
1/2 inch (13 mm) Thick.
4 ft. x 50 ft. (1.2 m x 15.2 m).
200 square-foot (18.5 m²) Coverage.
1.9
13 psi
Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.
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Updated: 12/4/2013
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DURO-GUARD® EPS FAN FOLD
Installation:
Duro-Guard EPS Fan Fold may be used
directly under the Duro-Last membrane.
Care should be taken to ensure that “bare”
EPS is never in direct contact with the
membrane. Refer to the appropriate DuroLast specification for slip sheet and cover
board requirements.
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.
Butt 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, acceptable gravel size for overlays
and other requirements.
Precautions must be taken to ensure that new
concrete decks have fully hydrated and do not
continue to release moisture.
Figure 3. Duro-Guard EPS Fan Fold As Recover Board
Panel Attachment:
Mechanical Attachment
Refer to Duro-Last Mechanically Attached
System Specifications and detail drawing
#1030 for approved fasteners and fastening
patterns.
Use fasteners and plates supplied by or
approved by Duro-Last, Inc.
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”) and completely
covered with a weatherproof covering such as
a tarpaulin.
Do not use panels which are wet or damaged.
Figure 4. Partial view of facer on top surface
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.
m
Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.
2of 2www.duro-l
Updated: 12
2013
-248-02
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