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DURO-GUARD EPS FIBERGLASS FACER
FLAT AND TAPERED PANELS

Description:
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Duro-Guard EPS Fiberglass Facer is a premium
insulation consisting of a superior closed-cell,
lightweight and resilient expanded polystyrene (EPS)
which is factory laminated to a durable fiberglass
facer. It meets or exceeds the requirements of ASTM
C 578, Standard Specification for Rigid, Cellular
Polystyrene Thermal Insulation.
 Available in both flat and tapered panels in
order to meet thermal insulation needs as well
as provide slope for proper roof drainage.
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 May be used directly under Duro-Last
membranes. This saves labor by eliminating
the need for installing a separate cover board Figure 1. Duro-Guard EPS Fiberglass Facer (Top Layer)
or slip sheet.
Tapered Panels:
 Provides long-term thermal insulation value.
 Does not contain CFCs or HCFCs.  Typical sizes:
 Superior moisture resistance. o 4 ft. x 4 ft. (1220 mm x 1220 mm).
 100% recyclable. o 4 ft. x 8 ft. (1220 mm x 2440 mm).
o Thicknesses: 0 to 40 inch (0 to 1016 mm).
 Type VIII, 1.25 pcf, per ASTM C 578.
 Precut cricket and saddle systems are
 Refer to Table 3 for physical properties.
available.
Recommended Uses:  Taper designs and shop drawings are
available.
 Mechanically attached Duro-Last roof systems.  Custom sizes are available.
 Duro-Bond roof systems.
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 Metal retrofit roof systems.
 Adhered Duro-Last membranes.

Underwriters Laboratories Inc:
 May achieve UL Class A fire rating on
noncombustible decks without the use of a Figure 2. Duro-Guard EPS Fiberglass Facer Taper
cover board. Refer to Duro-Last’s UL Listings
(TGFU.R10128) for assembly details
(www.ul.com). TABLE 1. TYPICAL TAPER PANEL DIMENSIONS
ID SLOPE* Thickness
Factory Mutual Global: A1 ⅛” per 12” 1%
A2 ⅛” per 12” 1%
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 Refer to FM Approval’s RoofNav for details on A3 ⅛” per 12” 1%
FM Approved systems (www.roofnav.com). A4 ⅛” per 12” 1% EPS panels can be
C1 ¼” per 12” 2% formed up to 40” thick.
C2 ¼” per 12” 2%
Flat Panels: C3 ¼” per 12” 2% The starting thickness of
the tapered panels can
 Typical sizes: C4 ¼” per 12” 2% be custom ordered based
E1 ½” per 12” 4% on project requirements.
o 4 ft. x 4 ft. (1220 mm x 1220 mm). E2 ½” per 12” 4%
o 4 ft. x 8 ft. (1220 mm x 2440 mm). E3 ½” per 12” 4%
E4 ½” per 12” 4%
o Thickness: Up to 40 inch (1016 mm). * Contact Duro-Last for additional slope options.

www.duro-last.com 1 of 2 800-248-0280
Duro-Last, “World’s Best Roof”, Duro-Bond, Duro-Grip, Duro-Fleece, Duro-Fleece Plus, Duro-Tuff and Duro-Guard are registered marks owned by Duro-Last, Inc.
RoofNav is a registered mark owned by FM Global.
Created: 01/17/2012 Revised: 03/19/2013, 11/04/2013, 05/05/2015