ARMSTRONG HEADQUARTERS RECEIVES LEED®-EB PLATINUM CERTIFICATION

Highest Certification for Leadership in Energy and Environmental Design

LANCASTER, PA, June 21, 2007 / PRNewswire / – Armstrong World Industries' corporate headquarters building has received Platinum Certification from the U.S. Green Building Council under its LEED® Green Building Rating System™ for existing buildings.

Armstrong's headquarters, built in 1998, is only the sixth existing building – and the first outside of California – to achieve the highest certification offered.

Among the building's characteristics that contribute to its environmental performance are its:

Use of clean, renewable energy – 75% of the building's power is supplied by wind energy, the equivalent of planting 149,000 trees or removing 300 automobiles from the road;

Reduced energy use – Armstrong's headquarters uses less than 1.5 watts/square foot, half the nationwide average for comparable buildings;

Reduced water use – The building reduced water use from 800,000 gallons to 420,000 gallons;

Recycling program – 60% of the building's waste is recycled;

Maintenance – Environmentally responsible, Green Seal-certified cleaning products are used;

Improved acoustics – Armstrong acoustic ceilings and sound-absorbing surfaces are used throughout the building;

Landscaping – Eliminates irrigation and provides erosion control and measured storm-water run-off into adjoining wetlands.

In presenting the award today to Armstrong, USGBC President and CEO S. Richard Fedrizzi said, "Armstrong has demonstrated an unwavering commitment to the environment by achieving LEED-EB Platinum Certification. Armstrong's headquarters is a model for companies seeking to introduce sustainable, environmentally friendly practices into their facilities."

Armstrong Chairman and CEO Michael D. Lockhart said, "Armstrong is committed to environmental sustainability. Modifying our headquarters building to enable it to be platinum certified is a concrete manifestation of that commitment. The Armstrong team that conceived and executed this project demonstrated that we can significantly reduce our impact on the environment by changing the way buildings are designed, built and used."

"Green buildings are a win for our environment, and a win for the bottom line," said Kathleen A. McGinty, secretary of Pennsylvania's Department of Environmental Protection. "By cutting utility costs and providing a healthy workplace for employees, green buildings provide a strong competitive edge. That's why the Governor is pushing green buildings and that's why we are proud to be second only to California in the number of certified green buildings we have in the state. Congratulations to Armstrong on a smart business move, and on leading the way to a green and healthy environment."

USGBC's LEED® Green Building Rating System™ is a voluntary national standard for developing high-performance, sustainable commercial-use buildings. For Platinum Certification, Armstrong's headquarters building was evaluated for site sustainability; water efficiency; energy efficiency; use of materials and resources; indoor environmental quality; and design innovation.

Armstrong's headquarters, located on a 225-acre campus, is a three-story glass and steel structure with workspaces for 235 employees of the country's largest manufacturer of resilient and hardwood flooring and ceiling systems.

About Armstrong

Armstrong World Industries, Inc. is a global leader in the design and manufacture of floors, ceilings and cabinets. In 2006, Armstrong's consolidated net sales totaled approximately $3.4 billion. Based in Lancaster, Pa., Armstrong operates 39 plants in 10 countries and has approximately 13,000 employees worldwide. For more information, visit www.armstrong.com.

About U.S. Green Building Council

USGBC is the nation's foremost coalition of leaders from every sector of the building industry working to promote buildings that are environmentally responsible, profitable and healthy places to live and work. Our more than 9,000 member organizations and our network of 75 regional chapters are united to advance our mission of transforming the building industry to sustainability. LEED® and Green Building Rating System® are registered trademarks of USGBC.