EnergyGuard™
Perlite Tapered Roof Insulation
Description
- EnergyGuard™ Perlite Tapered roof insulation is factory fabricated from EnergyGuard™
Perlite rigid perlite insulation board.
- Tapered roof insulation systems are supplied in 2' x 4' (0.6 m x 1.2 m) or 4' x
4' (1.2 m x 1.2 m) boards, custom cut and tapered to 1/16" (1/2%), 1/8"
(1%), 1/4" (2%), and 1/2" (4%) per foot (5.2, 10.4, 20.8, or 41.6mm/m)
slope depending on the need. Custom sizes are available.
- Quality EnergyGuard™ Perlite or PolyIso roof insulation is used as fill insulation
to complete the system.
Uses
- To create positive drainage on new roofs and reroofs.
- To eliminate trouble spots on roof where and when ponding is a problem.
- Properly installed, EnergyGuard™ Perlite roof insulation is suitable for use
under built-up, modified bitumen, and some single ply roofing systems.
- Refer to the application specifications in the current Membrane Manufacturer’s Application
and Specifications Manual for proper installation procedures for EnergyGuard™
Perlite roof insulation.
Advantages
- Environmentally Friendly. The minimum recycled content is 25% by weight. 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.
Limitations
- EnergyGuard™ Tapered Perlite roof insulation is a non-structural, non-load
bearing material.
- EnergyGuard™ Tapered Perlite roof insulation 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 be installed.
Installation Suggestions for Tapered Systems
Although each tapered system is different, here are some suggested
methods for installing tapered insulation system efficiently.
- Verify building dimensions and drain locations with the Tapered Roof Insulation
Shop Drawing. Discrepancies should be reported to BMCA prior to shipment.
- Verify that the proper number of truckloads and piece quantities have been received
on the job site.
- Determine the area to be completed that day.
- Measure the distance from the drain to the perimeter where the shop drawing indicates
full insulation boards. Verify that the system will meet the drain piece.
- Start installing the tapered system utilizing full boards. Work from the drain and
finish the area where the shop drawing indicates field cutting.
- When more than one layer of insulation is utilized, all vertical board joints should
be staggered, preferably by 1/2 board.
- Cover the insulation with the complete membrane system the same day.
WARNING:DO NOT EXPOSE TO OPEN FLAME OR EXCESSIVE HEAT. MAY SMOLDER
IF IGNITED. IF IGNITED, EXTINGUISH COMPLETELY.
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EnergyGuard™ Tapered Perlite Insulation Values
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Average Thickness
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Nominal
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Inches
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mm
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"C" Values*
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"R" Values**
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1"
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25
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.36
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2.78
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1 1/2"
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38
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.24
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4.17
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2"
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50
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.18
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5.56
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2 1/2"
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64
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.15
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6.67
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3"
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75
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.12
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8.33
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3 1/2"
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89
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.105
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9.52
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4"
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102
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.09
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11.11
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* BTU/(hr. ft2. °F) **(hr. ft2. °F)/BTU
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Documents
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