GAF Materials Corporation
1361 Alps Road
Wayne, NJ 07470
Tel: (800) 766-3411
Web site: http://www.gaf.com
ENERGY GUARD™ PERLITE® RECOVER BOARD
Formerly BMCA Permalite®Recover Board
DESCRIPTION
EnergyGuard™ Perlite Recover Board is a heavier duty 1/2" thick perlite
roof insulation board composed of expanded perlite, cellulose binders,
and waterproofing agents. It is treated for surface retention of bitumen
and available in 2' x 4' (0.61m x 1.22m), 4' x 4' (1.22m x 1.22m) and 4'
x 8' (1.22m x 2.44m), with a nominal thickness of 1/2 " (13mm).
USES
• In reroofing as a base for a variety of membranes installed over
failed or worn out roof systems.
• As a top layer in two layer systems.
• As an overlay board where an existing roof insulation is still functioning
and should be retained.
• Where a tear-off would create unwarranted risks to operations or
materials in the building.
• To separate a new membrane from a rough or irregular deck.
• Properly installed, EnergyGuard™ Perlite Recover Board roof insulation
is suitable for use under built-up, modified bitumen and some single ply
roofing systems.
BENEFITS
• Economical base for reroofing.
• Protects new roofs from old roof problems.
• Lower installed cost than tear-offs.
• Dimensionally stable.
• Environmentally friendly. The minimum recycled content is 25% by
weight.
CODE COMPLIANCE
Recover Board is in compliance with:
• ASTM Standard C728.
• UL Class A construction on combustible or non-combustible roof decks.
Where UL labels are required, customer must order them in advance.
• FMRC for fire and wind resistance. Contact the Contractor Services
Department at 1-800-624-6832 for the latest approvals.
• Complies with the Environmental Protection Agency Regulation 40 CFR
Part 248, “Guideline for Federal Procurement of Building Insulation Products
Containing
Recovered Materials”, as a recycled product approved for use on any
project using federal funds.
APPLICATION
Recover Board can be secured by mechanical fastening or hot asphalt.
If the deck is non-nailable, strip mopping is recommended to allow for
moisture pressure release. Solid mopping with asphalt should not be
used for re-roofing applications. Refer to the application specifications
in the current membrane manufacturer’s Application and Specifications manual
for proper installation procedures.
LIMITATIONS
• Old roofing systems must be thoroughly dried and secured before Recover
Board is applied as a part of a new roof system.
• Recover Board is not acceptable for applications where it will be
directly exposed to continuous soaking temperatures in excess of 250°F.
• EnergyGuard™ Perlite roof insulation is a non-structural, non-load
bearing material.
• EnergyGuard™ Perlite roof insulation should not be left exposed to
the weather.
• No more insulation should be applied than can be completely covered
with finished roofing on the same day.
• Do NOT use under fully adhered single ply systems or with direct
torch application of modified bitumen.
• If torch grade, modified bitumen roofing is to be installed over
EnergyGuard™ Perlite, a fiber glass base sheet MUST first be installed.
• Do NOT mechanically attach 1/2 inch recover board directly to steel
decks.
THERMAL VALUES (1)
| Thickness
(nominal) in mm |
“C” value
(Conductance) BTU/(hr•ft2•°F) W/m2•°C |
R-Value
(Resistance) (hr•ft2•°F)/BTU m2•°C/W |
| 13 | 0.76 4.3 | 1.32 0.23 |
TYPICAL PHYSICAL PROPERTIES (1)
| Typical Physical Properties | Value | Test Method |
| Water Absorption, % by Volume —
2 hrs. |
3.5 max. | ASTM C 209 |
| Compression Resistance
5% Consolidation — psi (kPa) 10% Consolidation — psi (kPa) |
35 (241)
50 (345) |
ASTM C 165 |
| Laminar Tensile Strength — psi (kPa) | 4.9 (33.8) | ASTM C 209 |
| Flexural Strength — psi (kPa) | 60 (414) | ASTM C 203 |
| Product Density — pcf (kg/m3) | 11 - 14 (176 - 224) | ASTM C 209 |
| Linear Expansion | 0.5% max. | ASTM C 209/
ASTM D 1037 |