Duro-Last XPS Fan Fold - A User Manual
DURO-GUARD® XPS FAN FOLD – A
(HYBRID CRUSH/CUT FOLD)
Description:
Duro-Guard
a rigid extruded polystyrene (XPS) core and wrapped
with tough facers which create a durable water
resistant board. XPS is highly resistant to heat flow
and moisture penetration. The film facers are
compatible with all roof membranes offered by DuroLast, Inc.
Use as a recover board over:
Inert, non-nutritive, and highly stable.
Contains no CFCs, HCFCs, formaldehyde or
Superior moisture resistance.
Refer to Table 1 for physical properties.
®
XPS Fan Fold – A is manufactured with
o Granulated or smooth cap sheets.
o Smooth built-up roof systems.
o Aggregate surfaced built-up roofs (3/8 inch
aggregate, max.).
o Aged coal tar pitch roof systems.
o Single-ply membranes.
VOC ozone depleting gases.
Figure 1. Duro-Guard XPS Fan Fold – A
TABLE 1. TYPICAL PHYSICAL PROPERTIES
Property Test Method Result
Thermal Resistance,
R-Value
ASTM C 518
@75°F
°F·ft
1.5
2
·hr/Btu
Uses:
Mechanically attached roof systems.
Underwriters Laboratories Inc.:
Refer to Duro-Last’s UL Listings
(TGFU.R10128) for fire-rated assembly details
(www.ul.com).
Figure 2. Duro-Guard XPS Fan Fold – A Dimensions
Compressive Strength
(Min. psi @ 10% deflection)
Water Vapor Permeance
Water Absorption
(Max. % by Volume)
Fire Characteristics
Flame Spread
Smoke Developed
ASTM D 1621 15 psi
ASTM E 96
(Dessicant Method)
ASTM C 272 0.6%
ASTM E 84
0.06 perm
10
200
Board Dimensions:
3/8 inch thick.
4 ft x 50 ft.
200 square-foot coverage.
Fan-folded every 2 ft creating easy to handle
bundles measuring 2 ft x 4 ft x 9 inches thick.
Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.
1 of 2 www.duro-last.com 800-248-0280
Updated: 12/4/2013
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DURO-GUARD® XPS FAN FOLD – A
Installation:
Duro-Guard XPS Fan Fold – A may be used
directly under the Duro-Last membrane.
Ensure that “bare” XPS is never in direct
contact with the Duro-Last membrane. Refer
to the appropriate Duro-Last specification
for slip sheet and cover board
requirements.
Panels must be kept dry before, during and
after installation. Install only as much fan fold
board as can be covered the same day with
completed roofing.
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 other requirements.
Precautions must be taken to ensure that new
concrete decks have fully cured and do not
continue to release moisture.
Figure 3. Duro-Guard XPS Fan Fold – A as a recover
board
Fan Fold 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:
Fan fold board 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.
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.
Figure 4. Partial view of facer on top surface
m
Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.
2of 2www.duro-l
U
dated: 12/4/2013
-248-02
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