Johns Manville Releases New SBS Cool Roof Granulated Cap Sheet Portfolio

Johns Manville, a leading commercial roofing supplier has announced the release of its Cool Roof Granulated (CR G) cap sheet portfolio. The new CR G cap sheets combine the installation ease of a standard granulated cap sheet with the energy efficient benefits that come from a highly reflective and emissive surface. This latest addition is the most cost-effective Cool Roof product option from JM for modified bitumen systems to date.

The new CR G cap sheets are surfaced with a bright-white, highly-reflective granule that is both durable and energy efficient. The granule mitigates solar heat and provides additional comfort to the interiors of the buildings it protects. In addition to the new membranes, 5-gallon containers of Cool Roof Granules have also been added to the product offering and are packaged to dress up bleed-out at seams when desired for a superior finished roof surface. Johns Manville’s CR G portfolio offers the same high quality that customers have come to expect from other Johns Manville products. This new cap sheet series also offers:

Longevity: The CR G cap sheet series offers superior stain resistance with the added aesthetic benefits of a granulated surface.

Ease of Installation and Repair: CR G cap sheets can be installed just like a conventional granule cap sheet with cold application adhesive, hot asphalt and heat-weld methods. The cool roof granules are applied the same as traditional granules to bleed-out and for repair.

Energy Savings: Reflective surfaces such as the CR G cap sheets can help to mitigate heat transferred into buildings during hot summer months and the Urban Heat Island effect.

Code approvals: CR G products have UL and FM approvals and are listed with the CRRC.

CRRC®* Test   Initial   3-Year Aged
Reflectivity (ASTM C 1549)   0.72   pending
Emissivity (ASTM C 1371)   0.89   pending
  Rated Product ID: 0662-0042 Licensed Manufacturer ID: 0662 Classification: Production Line
LEED® Solar Reflectance Index (SRI) - E 1980   88   pending
  Recycled Content   0%

For more information on Johns Manville’s new CR G cap sheet series, please visit

About Johns Manville

Johns Manville, a Berkshire Hathaway company (NYSE:BRK.A, BRK.B), is a leading manufacturer and marketer of premium-quality products for building insulation, mechanical insulation, commercial roofing and roof insulation, as well as fibers and nonwovens for commercial, industrial and residential applications. JM serves markets that include aerospace, automotive and transportation, air handling, appliance, HVAC, pipe and equipment, filtration, waterproofing, building, flooring, interiors and wind energy. In business since 1858, the Denver-based company has annual sales of approximately $2.5 billion and holds leadership positions in all of the key markets that it serves. JM employs approximately 7,000 people and operates 45 manufacturing facilities in North America, Europe and China. Additional information can be found at

Johns Manville Christina Martinez, 303-978-2858 Marketing Specialist