Ratings, Codes and Programs
Membership and Outreach
Below are excerpts from the new Board members' statements:
Thomas McKay, BASF Corporation, Market Development Manager
"...I have been deeply involved in the development, commercialization and marketing of cool roofing products. I have intimate knowledge of the codes, regulations and architectural guidelines for sustainable building and cool roofing...I am deeply committed to the sustainable building movement. Groups like the CRRC can help provide clear, concise and accurate information to consumers to help them make the right choice."
Joe Mellott, Garland Company, Director of Technology
"[Joe Mellott] has served the roofing materials industry in a variety of capacities over the last 20 years. For over ten years, Joe coordinated the testing of roofing materials for manufacturers as well as for validation by the CRRC as managing director of a key CRRC Accredited Independent Testing Laboratory (AITL)...In his current role, Joe oversees roofing product development and testing for Garland, a manufacturer of roofing materials including but not limited to roof coatings, membranes, metal, and accessory products."
David Hitchcock, Houston Advanced Research Center, Senior Research Assistant
"HARC is a non-profit, independent research organization that has provided me with the opportunity over the last eight years to lead various urban heat island projects in Texas, particularly Houston. Texas is one of the largest roofing markets in the U.S., and consumes more electricity than any other state. I hope to continue my role in the Council's deliberations as a Board member, and will provide information to Texans on cool roof ratings and the CRRC."
Dean Larsen, President of Roof Systems Engineering, representing RCI
"Dean Larsen is a roofing, waterproofing and building envelope consultant who has been involved in the roofing industry for over twenty-two years on a wide variety of institutional, commercial, manufacturing and government facility projects. He has...been involved as both a student and educator in numerous roofing, waterproofing and building envelope seminars...At the present time, he is serving on the CRRC Board of Directors as a representative of RCI...[Mr. Larsen] has experience with the success of both the energy savings as well as the benefits of extending roof service life, and would bring a consultant perspective to the CRRC Board."
At the June meetings, CRRC staff circulated sign-up sheets to solicit interest in our four committees. These include: Technical Committee (chaired by Bill Kirn), Ratings, Codes & Programs Committee (chaired by Jonathan Humble), Membership & Outreach Committee (chaired by David Cocuzzi), and Nominating Committee (chaired by David Roodvoets). We had an enthusiastic response from membership meeting attendees, but would like to extend the opportunity for committee participation to our entire participant base.
Please note: the Technical Committee will be comprised of 15 voting members and an unlimited number of non-voting participants. The Nominating Committee is already considering candidates for the voting positions, but all members are welcome to join as non-voting members.
If you are interested in joining a committee, please contact Rebecca at Rebecca@coolroofs.org.
A brief description of the different committees can be found at: www.coolroofs.org/aboutthecrrc.html.
The CRRC's first aged ratings have been added to the Rated Products Directory! The Directory will be continually updated as results come in. Check out the Product Directory and the first aged ratings at: www.coolroofs.org/products/search.php!
The CRRC requires receipt of an Aged Product Rating Application and Aged Test Results Report within 90 days of a product's removal from the test farm (there is no fee required by the CRRC). The CRRC reserves the right to suspend a product's rating if staff does not receive necessary documentation within the specified timeframe. Your cooperation is greatly appreciated.
Q-Lab Weathering Research Service has become an accredited test farm with the CRRC! Welcome!
Please visit the following page for their contact information: www.coolroofs.org/productratingprogram_test_farm.html.
The CRRC is contracting with Lawrence Berkeley National Laboratory (LBNL) to hold a CRRC lab training workshop at their site in Berkeley, California. The CRRC will be covering two new test methods this year: E1918A- an alternate approach to ASTM E1918- and D1669, for measuring coating thickness.
This class is almost full, but there are still a couple spots available. Email firstname.lastname@example.org if you are interested in attending.
New Field-Applied Coating Thickness Requirement in CRRC-1
At the CRRC Board meeting on June 7th, the Board approved a new requirement for coating thickness mandating that coatings be applied within 10% of the manufacturer's minimum recommended thickness. The film thickness must be verified by an AITL during initial product testing using ASTM D1669. Going forward, the CRRC will require product specification sheets containing this information for field-applied coating product ratings. Download the most recent version of CRRC-1 from our website: www.coolroofs.org/productratingprogram.html.
RCMA and RRCI Coatings Studies
Both the Roof Coatings Manufacturers Association (RCMA) and the Reflective Roof Coatings Institute (RRCI) have recently started respective field studies to examine the effect of substrate and coating thickness on the solar reflectance of field-applied coatings after three years of weather exposure.
RRCI will look at four highly reflective elastomeric roof coatings chemistries for the study (acrylic, silicone, polyurethane and acrylic/fluoropolymer), all of which are recommended by the chemistry manufacturer and have been used commercially in elastomeric roof coatings for decades. Three dry film thicknesses are being tested and evaluated for each of these elastomeric roof coatings chemistries: 5 to 7 dry mils, 10 to 12 dry mils, and 18 to 20 dry mils. The substrates selected for this field study are common substrates used in low-slope roofing applications. They include: PVC, EPDM, aluminum, cold rolled steel, sprayed polyurethane foam (SPF) and several asphaltic substrates (including APP and SBS smooth and granulated modified bitumen).
Unexposed controls will provide the initial values for each test specimen. The test group samples will be exposed in three climatic areas: a southern, high-humidity exposure in Florida, a mid-western cold climate exposure in Minnesota, and a western, arid exposure in Tucson, Arizona.
The CRRC will work with RCMA to conduct their study. RCMA's goal is to ascertain the minimum thickness at which a coating can be applied without a substrate negatively affecting solar reflectance performance, and whether differing substrates have different effects on solar reflectance performance at varying mil thicknesses. The results of the study will determine which substrates the CRRC requires for testing in its Product Rating Program.
Two commercially available products from each of the following coating categories will be used: acrylic elastomeric water-based coating, styrene-acrylic elastomeric water-based coating, SEBS elastomeric solvent-based coating, polyurethane elastomeric solvent-based coating, aluminum roof coating-fibered, and rubberized aluminum roof coating- non-fibered. One commercially available substrate of each of the following will be used: aluminum, SBS modified bituminous membrane, glass base sheet, and APP modified bituminous membrane.
Ten specimens of varying combinations will be prepared. One of each specimen group will serve as the control. Three will be exposed in Uniontown, Ohio; three in Buckeye, Arizona; and three in Tampa, FL. All will be exposed at a low slope facing south for a period of three years. Both studies will be considered by the CRRC when determining the most appropriate substrate for field-applied coatings.
The Texas State Energy Conservation Office (SECO) partnered with the Brooks Energy & Sustainability Laboratory to explore cool roof implementation and performance on portable classroom buildings in the San Antonio, TX area. Portable structures such as these are quick, cost-effective ways to accommodate more students, but notorious energy wasters. One of SECO's goals was to assist schools in decreasing energy consumption. SECO learned of a reflective coating called Microteja®, and undertook a study to explore the benefits of cool roofing technologies. Four portable buildings located at Madison High School in San Antonio, TX were selected for the site of this study. The data from the study indicated that using a reflective coating on these structures did help to mitigate the plenum/attic temperatures in cooling months. This temperature reduction reduced the work of the compressor, which resulted in energy savings. Total energy savings ranged from 0.4 to 17.3% depending on variable factors like weather, equipment, and internal temperature set point.
View the article at: www.seco.cpa.state.tx.us/zzz_sa/sa_coolroof-report2007.pdf.
Ratings, Codes and Programs
Oak Ridge National Laboratory (ORNL) and Lawrence Berkeley National Laboratory (LBNL) have each developed an online energy savings calculator for cool roofs, with the support of Department of Energy and Environmental Protection Agency respectively, but are working together to develop an integrated calculator.
With funding from DOE, LBNL and ORNL convened an advisory group from the roofing industry in October 2005 to review the progress of the development of a joint DOE/EPA calculator. In addition to reviewing the status of the existing two calculators; the advisory group provided guidelines for future work. The committee will reconvene and open the development of the newly integrated calculator to outside contributions. Industry involvement is considered critical to the DOE and EPA's support of the final product.
For more information, visit: www.govforums.org/
Membership and Outreach
On June 8th, CRRC members gathered in the Washington D.C. area for the CRRC's annual Membership Meeting. A summary of the meeting is below and the PowerPoint presentations will soon be posted at: www.coolroofs.org/events.html.
Year-end Summary: 2006 marked more growth for the CRRC with the number of products increasing from 594 at the end of 2005 to 799 at the end of 2006. Staff thanks the Board and all active participants for making this possible.
CRRC staff gave an overview of appropriate use of the Member logo. The logo can be used on general corporate documents and product promotional materials, but may not suggest product rating or product endorsement. Contact the CRRC for logo files or questions about appropriate use.
Test Farm Update
Consistency testing results affirmed the feasibility of additional test farms, and the Board agreed to allow additional test farms. The Board also agreed to allow test farms to become AITLs.
Online Product Directory Update
In October of 2006, the CRRC upgraded its website to a searchable, sortable format. The new format makes it much easier to find products, and there has been lots of positive feedback from users. The Directory continues to be updated every two weeks.
In 2006, the CRRC contracted with Underwriters Laboratories (UL) to collect up to 20% of random testing samples for retesting. Prior to this, samples were only obtained through distributors and contractors listed by the Licensed Seller. Two products failed in 2006, and the Board is taking corrective action. In 2007, UL is helping staff to collect even more product samples.
Membership approved two proposed revisions to the CRRC Bylaws:
• Board of Directors election term start date: wording in Articles 5 and 6 was changed to specify that Board member and officer terms shall begin at the Board of Directors meeting following the annual Board of Directors election.
• Board of Directors filling a vacancy: An addition to Article 5: Board of Directors was made: "Incomplete terms resulting from vacancies filled pursuant to Section 6 of this Article shall not be counted for purposes of the foregoing two (2) consecutive term limit."
This year's membership meeting boasted a number of insightful and informative guest presentations from the following: Dave Conover, Gregory Crawford, Marc LaFrance, and Andre Desjarlais.
Dave Conover, International Code Council
Mr. Conover, senior advisor for the ICC, has been involved in codes and standards for over 30 years. Mr. Conover contends that without model codes, each state and local jurisdiction can develop separately without uniformity; but if model codes include a measure, other jurisdictions will adopt them. Mr. Conover discussed the ICC's latest development, SMARTcodes, which automates the code compliance process for federal, state and local codes. As a result of this, the permit process will move much more quickly. If the code had a reflectivity requirement, ICC could link to the CRRC Rated Products Directory as they have done with the National Fenestration Rating Council.
Gregory Crawford, American Iron & Steel Institute
Mr. Crawford gave a Ratings, Codes, and Standards update on behalf of Jonathan Humble, the Committee chairman. Mr. Crawford discussed the 2007 updates to ASHRAE 90.1 for which cool roof provisions will remain voluntary. For the 2010 edition, cool roofs will be mandatory, and compliance can occur in one of the following ways: minimum solar reflectance of 0.70 and thermal emittance of 0.75, or a minimum SRI of 82, ballasted or green roof, or vented sloped roofs with a solar reflectance of 0.70 or higher. Furthermore, the ASHRAE Energy Design Guides are designed for buildings to achieve 30% greater energy efficiency over 1999 edition Standard 90.1. The Design Guides include cool roofs and cite the CRRC. Mr. Crawford also discussed state codes, and of particular note is Florida, which will be holding hearings in 2007 to update their code. The code update will recognize the CRRC as one of the programs for determining values.
Mr. Crawford also discussed High Performance Buildings (those that integrate and optimize the following attributes: energy efficiency, durability, life-cycle performance, and occupant productivity), and their addition to the 2005 Energy Policy Act. The National Institute of Building Sciences plans to develop a guide on High Performance Buildings by the end of the year.
Marc LaFrance, US Department of Energy
Mr. LaFrance discussed the DOE's National Energy Policy, and how it addresses the need for energy efficiency in the automotive industry as well as buildings. Mr. LaFrance then gave an overview of the Energy Efficiency and Renewable Energy (EERE) Programs. Specifically, it is the mission of the Building Technologies Program to develop technologies, tools, and techniques for making residential and commercial buildings more energy efficient and affordable. Mr. LaFrance discussed the dilemma with net-zero energy buildings (ZEB) in that they are beneficial but extremely expensive. By the year 2025, the Building Technologies Program plans to create technologies and design approaches that enable the construction of cost-effective ZEBs.
Mr. LaFrance also discussed developments in terms of lighting, HVAC, and fenestration. The DOE's goal is to make windows as energy efficient as walls. Additionally, next generation roofing will involve coupling cool roofs with other measures, such as thermal mass, above deck ventilation, radiant barriers, and location and higher performing insulations.
Andre Desjarlais, Oak Ridge National Laboratory
Mr. Desjarlais presented an update on California's Building Energy Code, Title 24, on behalf of the California Energy Commission (CEC). Mr. Desjarlais noted that the information presented is the most recent version available, but that the proposal is still subject to change. The CEC is open to public comment for the next few months until they release the 45-day language portion of the code change process. The CEC plans to finalize changes to Title 24 in December 2007; the revised version would take effect in the third or fourth quarter of 2008.
The CEC is considering changing the cool roof requirement to consider climate zones, removing the prescriptive requirement for low-slope, non-residential cool roofs from some zones, and adding a prescriptive requirement for steep-slope and low-slope residential roofing in select zones. The CEC is also proposing to have different requirements depending upon the type of construction. The proposal distinguishes between high- and low-rise, low and steep roof slope, residential and non-residential, and new construction and retrofit. The CEC is also going to adopt an aged solar reflectance and thermal emittance requirement, instead of the use of initial values. For products which do not yet have aged ratings, a formula will be applied to the initial ratings to estimate the aged ratings. The CEC has not yet determined what this formula will be.
Please see the CEC's website for more information on Title 24 updates: www.energy.ca.gov/title24/index.html.