Design and Operation of a Cool Roof Rating System By Bipin Shah, - - PowerPoint PPT Presentation

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Design and Operation of a Cool Roof Rating System By Bipin Shah, - - PowerPoint PPT Presentation

Feb 05, 2024 691 likes •943 views

Design and Operation of a Cool Roof Rating System By Bipin Shah, President WinBuild Inc. CRRC Board Of Director What is the CRRC? 3rd Party Rating System for Educational Resource on Roofing Products Cool Roofing CRRC Mission: To

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Design and Operation of a Cool Roof Rating System

By

Bipin Shah, President WinBuild Inc. CRRC Board Of Director

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What is the CRRC?

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3rd Party Rating System for Roofing Products Educational Resource on Cool Roofing

CRRC Mission:

To implement and communicate fair, accurate, and credible radiative energy performance rating systems for roof surfaces.

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Evolution of the CRRC

CR rebate programs fared poorly

Inferior & inappropriate products used

1980’s 1998 2003 2005 2013

CRRC established

3rd party rating system needed

First products rated First T24 requirements effective, 500 products rated 2,000+ products rated

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Rating Program Growth

Licensees 196 Products 2,410

20 40 60 80 100 120 140 160 180 200 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 500 1000 1500 2000 2500 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012

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CRRC Founding Partners & Key Industry Manufacturers

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CRRC Decision Making

Technical Committee Board of Directors Issue/ Proposal

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Membership

200+ Members

  • Class A (70%)

Manufacturers, distributors, trade

associations

  • Class B (30%)

Roofing contractors, government agencies,

testing laboratories, test farms, code bodies, energy service companies

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Licensees & Rated Products

Manufacturers must become licensed to rate their products on the CRRC Directory.

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CRRC Label & Logo

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Rated Products Directory

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Supporting Compliance

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How is a Cool Roof Rated?

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Rated using surface properties

1.0

“Cooler”

100

Reflectance & Emittance SRI

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Aged Ratings

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Images courtesy of Atlas Weathering Services Group

Ohio Arizona Florida

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Program Credibility

  • Random Testing
  • ANSI Accredited
  • Testing by independent labs
  • Aging at independent test farms
  • Strict Chain of Custody

– between lab & weathering farm

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Testing Laboratories

CRRC product ratings are conducted by Accredited Independent Testing Laboratories

  • ISO/IEC 17025 Certified
  • Lab Training Required
  • Independent from a supplier or roofing product company
  • Annual Round Robin Quality Assurance Testing

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CRRC Test Methods

Solar Reflectance

  • Reflectometer (ASTM C1549)
  • CRRC-1 Test Method 1
  • Spectrometer (ASTM E903)
  • Pyranometer (ASTM E1918)

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CRRC Test Methods

Thermal Emittance

  • Emissometer

(ASTM C1371)

  • Considering

AZ Technology Temp/Tesa 2000 (ASTM E408)

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Weathering Farms

Product aging conducted at Accredited Test Farms

  • ISO 17025 Certified
  • Independent from a supplier or roofing product company
  • Products aged for 3 years
  • 3 climate zones across the US
  • Exposed at steep or low slope angles

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Considering Slope

VS

Low Steep

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Considering Climate

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Considering Aging

Length of Exposure

1, 3, 5, 10 years

Accelerated Aging Process Calculated Aging Formula

Aged Reflectance= (0.2+0.7[Initial Reflectance in 0.2])

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Resources

CRRC-1 Standard

  • Dictates how to prepare and test roofing products

http://coolroofs.org/documents/ANSI:CRRC-1_Standard.pdf

CRRC Program Manual

  • Dictates protocol for operating the CRRC Rating Program

http://www.coolroofs.org/documents/CRRC-1_Program_Manual_100412.pdf

CRRC Website

  • Educational resource on cool roofing information

http://coolroofs.org/resources/overview

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Cont

  • ntact

act Us Us

www.coolroofs.org Jeffrey Steuben (510) 482-4420 x288 jeff@coolroofs.org

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