Duro-Last EPS Fiberglass Facer User Manual

DURO-GUARD® EPS FIBERGLASS FACER

FLAT AND TAPERED PANELS

Description:

Duro-Guard 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.

• May be used directly under Duro-Last membranes. This saves labor by eliminating the need for installing a separate cover board or slip sheet.

• Use with mechanically attached or Duro-Bond® systems. Membrane shall not be adhered to this product.

• Provides long-term thermal insulation value.

• Does not contain CFCs or HCFCs.

• Superior moisture resistance.

• 100% recyclable.

• Type VIII, 1.25 pcf, per ASTM C 578.

• Refer to Table 3 for physical properties.

Recommended Uses:

EPS Fiberglass Facer is a premium

Figure 1. Duro-Guard EPS Fiberglass Facer (Top Layer)

Tapered Panels:

• Typical sizes:

o 4 ft. x 4 ft. (1220 mm x 1220 mm). o 4 ft. x 8 ft. (1220 mm x 2440 mm). o Thicknesses: 0 to 40 inch (0 to 1016 mm).

• Precut cricket and saddle systems are available.

• Taper designs and shop drawings are available.

• Custom sizes are available.

• Mechanically attached Duro-Last roof systems.

• Duro-Bond

roof systems.

• Metal retrofit roof systems.

Underwriters Laboratories Inc:

• May achieve UL Class A fire rating on noncombustible decks without the use of a cover board. Refer to Duro-Last’s UL Listings (TGFU.R10128) for assembly details (www.ul.com).

Factory Mutual Global:

• Refer to FM Approval’s RoofNav for details on FM Approved systems (www.roofnav.com).

Flat Panels:

• Typical sizes:

o 4 ft. x 4 ft. (1220 mm x 1220 mm). o 4 ft. x 8 ft. (1220 mm x 2440 mm). o Thickness: Up to 40 inch (1016 mm).

Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.

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Updated: 11/4/2013

Figure 2. Duro-Guard EPS Fiberglass Facer Taper

TABLE 1. TYPICAL TAPER PANEL DIMENSIONS

ID SLOPE* Thickness A1 ⅛” per 12” 1% A2 ⅛” per 12” 1% A3 ⅛” per 12” 1% A4 ⅛” per 12” 1% C1 ¼” per 12” 2% C2 ¼” per 12” 2% C3 ¼” per 12” 2% C4 ¼” per 12” 2% E1 ½” per 12” 4% E2 ½” per 12” 4% E3 ½” per 12” 4% E4 ½” per 12” 4%

* Contact Duro-Last for additional slope options.

EPS panels can be

formed up to 40” thick.

The starting thickness of

the tapered panels can

be custom ordered based

on project requirements.

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ast.co

800

DURO-GUARD® EPS FIBERGLASS FACER

Installation:

• Duro-Guard EPS Fiberglass Facer 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 Duro-Last 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.

• The use of multiple layers of insulation with joints staggered between layers a minimum of 6 inches is recommended to eliminate thermal bridging.

• 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 and attachment requirements.

• Precautions must be taken to ensure that new concrete decks have fully hydrated and do not continue to release moisture.

Panel Attachment:

improper storage, handling or installation by others.

TABLE 2. TYPICAL THERMAL VALUES

THICKNESS* R-Value

inches mm TYPE VIII

1.00 25 4.2

1.50 38 6.3

2.00 51 8.4

2.50 64 10.5

3.00 76 12.6

3.50 89 14.7

4.00 102 16.8

4.50 114 18.9

5.00 127 21

5.50 140 23.1

6.00 152 25.2

* Contact Duro-Last for additional thickness options.

TABLE 3. TYPICAL PHYSICAL PROPERTIES

Property Test Method Type VIII

Density

(nominal)

R-Value

(per inch)

@25°F @40°F @75°F

Compressive Strength

(10% deformation)

ASTM C 303 1.25 pcf

ASTM C 518

C 177

ASTM D 1621 13 – 18 psi

4.55

4.25

3.92

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.

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.

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

Flexural Strength ASTM C 203 ≥ 30 psi

Dimensional Stability ASTM D 2126 ≤ 2.0%

Water Vapor

Permeance

Water Absorption ASTM C 272 ≤ 3.0%

Flame Spread ASTM E 84 20

Smoke Developed ASTM E 84 150 - 300

ASTM E 96 ≤ 3.5 perm

Duro-Last, “World’s Best Roof” and Duro-Guard are registered marks owned by Duro-Last, Inc.

2of 2www.duro-l

Updated: 11

-248-02

2013