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Stay-Clean and Durable White Elastomeric Roof Coatings

Lead Performer: Lawrence Berkeley National Laboratory - Berkeley, CA
Partner: Dow Chemical - Midland, MI
DOE Funding: $570,000
Cost Share: $449,000
Project Term: 10/1/2011 - 9/30/2014

Project Objective

This project is developing stay-clean white elastomeric roof coatings (ERCs) with a three-year aged solar reflectance (SR) of at least 0.75 and a service life of 15 years or more. A 50% increase in U.S. cool roof energy cost savings can be achieved if performance standards for white roofs are raised from the current aged SR of 0.55 to 0.75. ERCs that are more mechanically durable would increase service life from about 10 years to at least 15 years. The higher ERC SR and durability could double lifetime energy savings for the technology.

Project Impact

LBNL esimates these elastomeric roof coatings will result in annual net energy cost savings of $0.63B and annual net primary energy savings of 0.083 quad in Residential Energy Consumption Survey climates zones 4 & 5.

Contacts

DOE Technology Manager: Karma Sawyer
Performer: Ronnen Levinson, Lawrence Berkeley National Laboratory

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