ACFoam® CrossVent® RB | Atlas Roofing Corporation

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ACFoam® CrossVent® RB Product Description

Closed-cell polyiso insulation board with 1.0", 1.5" or 2.0" vent spacer strips separating 7/16" APA/TECO rated radiant barrier OSB from the polyiso foam insulation.
Improves the thermal performance of standard CrossVent® by including a breathable radiant barrier on the underside of the OSB nailing surface.
Radiant barrier substantially limits conductive and radiant heat transfer.
Polyiso is the highest R-Value per inch insulation in the industry. Excellent R-Values reduce energy demands while maintaining compatibility with all types of roofing membranes and fire assemblies. See ASHRAE 90.1 Standards for Model Energy Code.
CFC-, HCFC-, and HFC-free foam blowing technology with zero ozone depletion potential (ODP) and zero (negligible) global warming potential (GWP).

What is Radiant Heat?
Radiant heat is formed when rays of energy from the sun strike an object and transform from motion energy to heat energy. Standard nailbase insulation does a good job of reducing convective and conductive heat transfer. However, it does little to reduce radiant heat transfer, which contributes significantly to the total heat flow into the building.

Only ACFoam® Crossvent® RB combines…

…polyiso insulation that provides unsurpassed thermal efficiency.
…a perforated, breathable, low-emissivity foil radiant barrier securely bonded to OSB.
…a radiant barrier panel that reflects up to 97% of the sun's radiant energy.
…an additional 7-10% savings annually on cooling costs.*
…a foil radiant barrier securely bonded to the OSB.
…a 20-year thermal limited warranty.

* Based on tests conducted by the Florida State Energy Center, University of Central Florida.

Recommended Uses

Designed for use over sloped unventilated roof decks. Slopes must be appropriate for the type of roof system specified.
The primary is to provide a thermally efficient insulation with uniform cross venting that promotes air circulation required by many shingle manufacturers.
Allows heat to dissipate while providing a nailable surface and efficient insulation in a one-step labor saving process.

Note: Ventilation design is solely the responsibility of the project designer. Designer should consider size of air space, ventilation capabilities of soffit and ridge vents, and length of run, among possible considerations. Atlas recommends a staggered double-layer of ACFoam®-II and CrossVent® RB for additional energy savings.

This product is available with FSC® Certified components upon request at any of our polyiso manufacturing facilities. Click here to view our FSC Certificate.

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Atlas Is Now FSC® Certified!

Atlas Nailable Polyiso Insulation is now available with FSC® Certification. Atlas® nailable insulation products that meet these strict FSC Chain of Custody Certification requirements include CrossVent®, CrossVent® RB, and Nail Base Insulation. These products are available at all Atlas polyiso manufacturing facilities in North America, can be specified in either FSC Pure, FSC Mixed, or FSC Recycled versions, and can contribute to gaining the Certified Wood LEED® credit.

Environmental Policy Statement

As a leader in the building products industry, Atlas Roofing Corporation is committed not only to compliance with the law relating to the environment, but also to the integration of sound environmental practices in its business decisions.

Hail Storms Beware: StormMaster Is Moving Into The Neighborhood

StormMaster® Platinum shingles are designed with SBS modified asphalt for maximum protection against wind and hail. Ask your insurance carrier about homeowners insurance discounts for installing Class 4 Impact Resistant StormMaster® Slate or StormMaster® LM shingles.