EnergyGuard™
Perlite Recover Board
Description
EnergyGuard™ Perlite Recover Board is a heavy 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’ (0.6m x 1.2m) 4’ x 4’ (1.2m x 1.2m) and 4’ x 8’ (1.2m x 2.4m), with a
nominal thickness of 1/2” (13mm).
Uses
- In reroofing as a base for a variety of membranes installed over existing roof systems.
- As a top layer in two-layer systems.
- As an overlay board where an existing roof insulation is still functioning and could
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 substrate.
- 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.
- 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, ULC Class A construction on combustible or non-combustible roof decks. Where
UL, ULC labels are required, customer must order them in advance.
- FM for fire and wind resistance. Contact the Contractor Services Department at 1-800-766-3411
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.
Do NOT solid mop with asphalt for recover or retrofit applications.
Refer to the current membrane manufacturer’s application and specifications manual
for proper installation procedures.
Limitations
- Old roofing systems must be thoroughly dry and secured before Recover Board is applied
as a part of a new roof system.
- Do NOT use Recover Board in applications where it will be directly exposed to continuous
soaking temperatures in excess of 250°F.
- EnergyGuard™ Perlite Recover Board should be stored dry and be protected from
the elements. Once properly loaded at the job site, remove factory wraps and cover
with a breathable tarp.
- 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 fiberglass base sheet MUST first be installed.
- Do NOT mechanically attach 1/2” recover board directly to steel decks.
NOTE: REPAIR ROOF LEAKS PROMPTLY TO AVOID ADVERSE EFFECTS, INCLUDING
MOLD.
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