GreenGuard Roofing Recovery Boards - Manual (Page 3)

c. Thermal Resistance (at 75°F mean temperature): ASTM C 518; 1.5 ft 2 •hr•°F/Btu (0.26 m 2 (k/W).
Specimens are tested in accordance with the FTC “R-value Rule” (16 CFR, Part 460).
d. Compressive Strength (at 10% Deflection): ASTM D 1621
1) GreenGuard
® PB6/PG38: 15 lbs./in 2 (103 kPa)
2) GreenGuard ® PB6W: 15 lbs./in 2 (103 kPa)
3) GreenGuard ® PB6 PLUS: 20 lbs./in 2 (138 kPa)
4) GreenGuard ® PB6FA/PB38FA: 20 lbs./in 2 (138 kPa)
e. Surface Burning Characteristics: ASTM E 84/UL723
1) GreenGuard
® PB6/PG38: Flame Spread 10, Smoke Developed 45 – 140
2) GreenGuard ® PB6W/PB6 PLUS/PB6FA/PB38FA: Flame Spread 15, Smoke Developed 50
Note: These numerical flame spread and smoke developed ratings are not intended to reflect
hazards presented by these materials under actual fire conditions.
f. Water Vapor Permeance (Procedure A, 75°F, 50% R.H.): ASTM E 96; 0.6 perm
(34.5 ng/Pa•s•m
2 ).
g. Maximum Recommended Use Temperature: 200°F.
4. Substitutions: No substitutions permitted.
2.02 ACCESSORIES
A. Accessories: Provide installation accessories as recommended by insulation manufacturer.
2.03 SOURCE QUALITY
A. Source Quality: Obtain extruded polystyrene roofing recovery board from a single manufacturer.
PART 3 EXECUTION
3.01 MANUFACTURER’S INSTRUCTIONS
A. Compliance: Comply with manufacturer’s product data, including product technical bulletins, product
catalog installation instructions, and product package instructions.
3.02 EXAMINATION
A. Site Verification of Conditions: Verify substrate conditions, which have been previously installed under
other sections are acceptable for product installation in accordance with the manufacturer’s instructions.
The following instructions address only the installation of GreenGuard
® Roofing Recovery Board:
1. Do not proceed with work during inclement weather or install any GreenGuard ® Roofing Recovery
Board over a wet surface.
2. If there are holes or voids in the existing roof system, they must be repaired or filled prior to
installing the GreenGuard
® Roofing Recovery Board.
3. GreenGuard ® Roofing Recovery Boards (except PB6/PG38) may be installed directly over existing coal
tar roof systems if the roof has not been resaturated within the previous 4 years (otherwise use a 6 mil
polyethylene separator sheet between the roofing recovery board and the existing roof system). In
addition, the new roof system must be designed to limit the maximum coal tar temperature to 110°F to
prevent volatiles from escaping from the existing roof system and attacking the roofing recovery board.
The design temperature at the surface of the roofing recovery board installed over existing coal tar roofs
shall not exceed 200°F during installation or use.
4. Beginning of installation means acceptance of substrate and existing project conditions.
3.03 PREPARATION
A. Surface Preparation:
1. When installing GreenGuard ® Roofing Recovery Boards over existing roofs, all loose aggregate, large
stones (sharp-edged stones that protrude to a height that may extend through the GreenGuard ® Roofing
Recovery Board), and debris should be removed prior to installation of the roofing recovery board.