December 7, 2010

CEMEX, S.A.B. de C.V. (NYSE: CX), today announced that it has developed a carbon footprint tool- the first of its kind in the building materials industry- that allows the company to measure the greenhouse gases emissions of its cement, ready-mix and aggregates products. The footprint tool considers a cradle-to-gate approach, from raw material sourcing to product manufacturing, providing significant assistance to customers in the building sector in calculating the carbon footprint of their projects.

CEMEX unveiled its CO₂ footprint tool today at COP16 during a round-table discussion the company hosted along with the World Green Building Council titled "Key Challenges for Construction in the 21st Century". CEMEX speakers and invited panellists discussed key trends driving sustainable construction as well as proposals on production practices, design and application of concrete products that can contribute to sustainable construction.

"CEMEX is proud to be the first building materials company able to offer its customers comprehensive carbon content information in its key products." said Luis Farías, CEMEX Senior Vice-President of Energy and Sustainability. "We continually strive to operate our business in a sustainable way by measuring and reducing our carbon footprint in our products and operations."

"Measurement, verification and calculation methods performed in accordance with ISO and CEN standards, and adopted by recognized certification protocols, are key fundamentals to promote low-carbon construction practices." said panellist Juan Carlos López Agüí, President of the European Committee for Standardization (CEN). "Knowing the environmental impact of a product helps producers, consumers and societies make informed decisions and take positive steps towards operating at a sustainable level. CEN and ISO standards offer a solid and transparent basis for full life cycle analysis and allow certification protocols for materials, building products and constructions considering environmental, economic and social aspects."

CEMEX's carbon footprint tool has been verified by independent certifier DNV, one of the world's leading environmental certification entities, in accordance with international certification protocols PAS2050, ISO14040, and the draft versions of ISO14067, and the WBCSD / WRI GHG protocol "Product Life Cycle Accounting and Reporting Standard." The knowledge generated throughout this process will better enable CEMEX to identify opportunities to further reduce its CO₂ footprint.

The tool has already been implemented in all of CEMEX's operating cement plants, and is currently being rolled out across its ready-mix and aggregates operations worldwide. CEMEX will begin publishing product specific carbon content for its products in selected operations during 2011, in a rollout schedule that will be driven by market requirements. CEMEX will begin reporting performance indicators related to the rollout progress in its annual Sustainable Development Report.

CEMEX is a global building materials company that provides high-quality products and reliable service to customers and communities in more than 50 countries throughout the world. CEMEX has a rich history of improving the well-being of those it serves through its efforts to pursue innovative industry solutions and efficiency advancements and to promote a sustainable future. For more information, visit www.cemex.com.

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This press release contains forward-looking statements and information that are necessarily subject to risks, uncertainties, and assumptions. Many factors could cause the actual results, performance, or achievements of CEMEX to be materially different from those expressed or implied in this release, including, among others, changes in general economic, political, governmental and business conditions globally and in the countries in which CEMEX does business, changes in interest rates, changes in inflation rates, changes in exchange rates, the level of construction generally, changes in cement demand and prices, changes in raw material and energy prices, changes in business strategy, and various other factors. Should one or more of these risks or uncertainties materialize, or should underlying assumptions prove incorrect, actual results may vary materially from those described herein. CEMEX assumes no obligation to update or correct the information contained in this press release.

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