AWI Armstrong World Industries Inc

IMPORTANT NOTICE REGARDING THE AVAILABILITY OF

PROXY MATERIALS FOR THE ANNUAL MEETING

TO BE HELD ON JULY 10, 2015:

The Notice of Annual Meeting, this Proxy Statement and

the Company’s 2014 Annual Report are available at www.proxyvote.com.

TABLE OF CONTENTS

ITEM 1 – ELECTION OF DIRECTORS

On the recommendation of the Nominating and Governance Committee (“Governance Committee”), our Board has nominated the 12 directors listed below for election at the annual meeting. The nominees include 11 independent directors, as determined by the Board in accordance with the New York Stock Exchange (“NYSE”) listing standards and our Corporate Governance Principles. The twelfth nominee is our President and Chief Executive Officer (“CEO”), Matthew J. Espe. Each nominee’s term would, if elected, run from the date of his election until our next annual shareholders’ meeting, or until his successor, if any, is elected or appointed. We have no reason to believe that any of the nominees will be unwilling or unable to serve if elected.

The Governance Committee performs an assessment of the qualifications and experience needed to properly oversee the interests of the Company. In doing so, the Governance Committee believes that aligning director qualifications and skill sets with our business and strategy is essential to forming a Board that adds value for shareholders. While the Board does not have a formal diversity policy with respect to director nominations, it believes that a Board composed of individuals with diverse attributes and backgrounds enhances the quality of the Board’s deliberations and decisions.

The Board has an expansive view of diversity, going beyond the traditional concepts of race, gender and national origin. The Board believes that the diversity of viewpoints, educational backgrounds, and differences in professional experiences and expertise represented on the Board evidences diversity in many respects. The Board believes that this diversity, coupled with the personal and professional ethics, integrity and values of all of the directors, results in a Board that can guide the Company with good business judgment.

The Governance Committee expects each of the Company’s directors to have proven leadership, sound judgment, integrity and a commitment to the success of the Company. In evaluating director candidates and considering incumbent directors for nomination to the Board, the Governance Committee considers a variety of factors. These include each nominee’s independence, financial literacy, personal and professional accomplishments, and experience in light of the needs of the Company. For incumbent directors, the factors also include past performance on the Board and contributions to their respective committees. The Board is also particularly interested in maintaining a mix of skills and qualifications that include the following:

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

OUR BOARD RECOMMENDS THAT YOU VOTE FOR THE ELECTION OF THE FOLLOWING NOMINEES:

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

		STAN A. ASKREN Director since: 2008 Age: 54   Independent

Mr. Askren has been chairman and CEO of HNI Corporation (“HNI”), the second largest office furniture manufacturer in the world and the nation’s leading manufacturer and marketer of hearth products, since 2004, and president since 2003. Previously, he was executive vice president of HNI from 2001 to 2003. Mr. Askren has worked at HNI for 23 years, including as vice president of marketing, vice president of human resources, and as an executive vice president and president of HNI’s hearth products operating segment. Mr. Askren has also worked in several industries and previously held multiple executive management and general management positions with Emerson Electric, Thomson S.A. and HNI Corporation. Mr. Askren previously served on the board of directors of Arctic Cat Inc., a designer, engineer and manufacturer of all-terrain vehicles and snowmobiles, and served as a member of its compensation committee. Mr. Askren also serves on the boards of directors of the Business and Institutional Furniture Manufacturers Association (past chair), the Iowa Business Council (past chair), and the Iowa Heritage Foundation. Mr. Askren brings to our Board extensive operating, senior executive leadership, manufacturing, sales and distribution expertise, as well as valuable insights from his experience as a public company chief executive officer.

		MATTHEW J. ESPE Director since: 2010 Age: 56

Mr. Espe has been our President and CEO since he joined the Company in July 2010. Previously, Mr. Espe was chairman and chief executive officer of Ricoh Americas Corporation, a subsidiary of Ricoh Company, Ltd., a leading provider of document management solutions and services. Prior to that role, Mr. Espe was chairman of the board of directors and chief executive officer (2002 to 2008) of IKON Office Solutions, Inc. (“IKON”), an office equipment distributor and services provider, which was acquired by Ricoh in 2008. Mr. Espe was employed by General Electric for 22 years, serving as president and chief executive officer of GE Lighting prior to joining IKON in 2002. Mr. Espe previously served on the boards of directors of Unisys Corporation, a worldwide information technology company (2004 to 2014), and Graphic Packaging Holding Company, a provider of packaging solutions for consumer products companies (2009 to 2010). As our President and CEO, Mr. Espe provides our Board with important insights regarding our operations, strategic planning and senior management personnel matters. In addition, Mr. Espe’s long tenure as chairman and chief executive officer at Ricoh and IKON, his prior service on other public company boards of directors and their committees and his senior executive experience at General Electric, brings management experience, leadership capabilities, financial knowledge and business acumen to our Board.

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

		JAMES J. GAFFNEY Director since: 2006 Age: 74   Independent

From 1997 to 2003, Mr. Gaffney was a consultant to GS Capital Partners, II, LP, a private investment fund affiliated with Water Street Corporate Recovery Fund I, LP and Goldman, Sachs & Co., and other affiliated investment funds. From 1995 to 1997, Mr. Gaffney served as chairman of the board of directors and chief executive officer of General Aquatics, Inc., composed of companies involved in the manufacturing of swimming pool equipment and pool construction. Mr. Gaffney was president and chief executive officer of KDI Corporation, a conglomerate with companies involved in swimming pool construction and manufactured products (1993 to 1995). Mr. Gaffney serves on the boards of directors of the following companies: Pool Corporation, a distributor of swimming pool supplies, equipment and related leisure products and a distributor of irrigation and landscape products (since 1998), and Beacon Roofing Inc., a distributor of residential and non-residential roofing materials (since 2004). Mr. Gaffney previously served on the boards of directors of World Color Press Inc. (f/k/a Quebecor World Inc.) (2009 to 2010), Imperial Sugar Company (2001 to 2012; chairman 2003 to 2012), and C&D Technologies, Inc. (2010 to 2013). Mr. Gaffney brings our Board broad leadership, business and corporate governance expertise, as well as comprehensive experience in operations, manufacturing, financial, and risk management matters.

		TAO HUANG Director since: 2010 Age: 52   Independent

Mr. Huang was previously the chief operating officer of Morningstar, Inc., a leading independent provider of investment research, until his retirement in December 2010. Mr. Huang spent almost 20 years with Morningstar, taking on increasing levels of responsibility from his start as an entry level technical programmer. He was named director of technology in 1992 and chief technology officer in 1996; he started Morningstar’s International Operation in 1998, held the position of president of International Division until 2000; he was promoted as the Company’s chief operating officer in October 2000 and served in this position until his retirement. Mr. Huang led Morningstar initiatives enabling significant growth, both organically and through acquisition, and oversaw continuous improvements in the operations of the firm’s core businesses. Mr. Huang brings to our Board expertise developed from his experience in a data-intense and technology-driven organization managing growth and integration of acquisitions, as well as experience in international operations.

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

		MICHAEL F. JOHNSTON Director since: 2010 Age: 67   Independent

Mr. Johnston was previously with Visteon Corporation, an automotive components supplier, until 2008. At Visteon, he served as chairman of the board of directors, CEO, president, and chief operating officer at various times from 2000 to 2008. Before joining Visteon, Mr. Johnston held various positions in the automotive and building services industry, including serving as president, North America/Asia Pacific for Johnson Controls’ Automotive Systems Group. Mr. Johnston also serves as a member of the boards of directors of the following companies: Whirlpool Corporation, a leading manufacturer and marketer of major home appliances (since 2003), serving as presiding director and a member of its audit committee; and Dover Corporation, a diversified global manufacturer (since February 2013), serving as a member of its audit committee. Mr. Johnston previously served on the board of directors of Flowserve Corporation (2007 to 2013) including as the chairman of its corporate governance and nominating committee and a member of its finance committee. Mr. Johnston’s executive leadership and board of directors experience offers our Board a seasoned corporate governance perspective, and he brings to our Board extensive operational, manufacturing and design, innovation, engineering and financial experience.

		JEFFREY LIAW Director since: 2012 Age: 38   Independent

Mr. Liaw is the chief financial officer of FleetPride, Inc., a nationwide supplier of heavy-duty truck and trailer parts. Prior to joining FleetPride in December 2012, Mr. Liaw was a principal of TPG Capital for seven years and was active in TPG’s energy and industrial investing practice areas. Before joining TPG in 2005, Mr. Liaw was an associate at Bain Capital, a private equity investment firm, in its Industrials practice. Mr. Liaw previously served on the boards of directors of Graphic Packaging Holding Company, a provider of packaging solutions for consumer products companies (2008 to 2013), including as a member of its nominating and corporate governance committee, and Oncor Electric Delivery Company, LLC. Mr. Liaw served as an observer to our Board on TPG’s behalf from 2009 until June 2012, at which time he was elected as a member of our Board. In addition to his financial expertise and experience working with a broad range of manufacturing companies, Mr. Liaw possesses intimate knowledge of the Company that he gained through his role as a Board observer for TPG.

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

		LARRY S. MCWILLIAMS Director since: 2010 Age: 59   Independent

Mr. McWilliams was previously the president and chief executive officer of Keystone Foods, a producer of proteins, from May 2011 to May 2012. From May 2005 to October 2010, he served as a senior vice president at Campbell Soup Company and subsequently became the president of Campbell International, responsible for all of Campbell Soup’s business in Europe, Latin America and Asia Pacific. Mr. McWilliams joined Campbell Soup in March 2001 as senior vice president – sales and chief customer officer, overseeing the company’s relationships with its global retail partners. In April 2003, he assumed the position of president – North America Soup. Mr. McWilliams was named senior vice president and president – Campbell USA in March 2004. Prior to Campbell Soup, Mr. McWilliams held positions at Coca-Cola from 1995 to 2001 and the Pillsbury Company from 1993 to 1995. Mr. McWilliams also serves on the boards of directors of Bob Evans Farms, a full-service restaurant company (since 2014) and Godiva Chocolatiers International, a privately held company (since 2012). Mr. McWilliams formerly served on the Board of Governors of St. Josephs University Food Marketing Council and the Grocery Manufacturers’ Association’s Industry Affairs Council. Mr. McWilliams offers our Board senior executive leadership capabilities and experience, as well as extensive knowledge of sales, marketing, customer service relationships, international markets and distribution channels.

		JAMES C. MELVILLE Director since: 2012 Age: 63   Independent

Mr. Melville is a member of the Minneapolis-based law firm of Kaplan, Strangis and Kaplan, P.A., where he has practiced in the corporate, governance, mergers and acquisitions, securities and financial areas since 1994. Prior to joining Kaplan, Strangis and Kaplan, P.A., Mr. Melville practiced with Dorsey and Whitney in their Minneapolis and London, England offices. Mr. Melville previously served as a member of our Board from September 2009 until July 2010. Mr. Melville is active in numerous local and civic organizations and their boards. Mr. Melville served as an observer of our Board on behalf of the Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust (the “Trust”) from August 2010 until February 2012. Mr. Melville brings extensive knowledge of the law, mergers and acquisitions, executive compensation, and corporate governance matters, international experience and financial acumen to our Board. He has also gained intimate knowledge of the Company through his prior service on the Board and his prior role as a Board observer for the Trust.

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

		JAMES J. O’CONNOR Director since: 2007 Age: 78   Independent

Mr. O’Connor is a retired chairman of the board of directors and chief executive officer of Unicom Corporation. Mr. O’Connor joined Commonwealth Edison Company in 1963, became president in 1977, a director in 1978 and chairman and chief executive officer in 1980. In 1994, Mr. O’Connor was also named chairman and chief executive officer of Unicom Corporation, which then became the parent company of Commonwealth Edison Company, from which he retired in 1998. Mr. O’Connor previously served on the boards of directors of the following companies: Trizec Properties, Inc. (2003 to 2006); Corning, Inc. (1984 to 2011); Smurfit – Stone Container Corporation (2000 to 2011); and United Continental Holdings, Inc. (1984 to 2012). Mr. O’Connor has a broad business background, having served in several chief and senior executive positions with large companies and on the boards of companies as diverse as a utility company, an industrial manufacturing company and an airline. Mr. O’Connor also offers our Board extensive knowledge and expertise in senior executive leadership, management, and corporate governance and board practices of other major corporations.

		JOHN J. ROBERTS Director since: 2006 Age: 70   Independent

Mr. Roberts served as global managing partner for PricewaterhouseCoopers LLP from 1998 until his retirement in June 2002. Mr. Roberts held numerous positions at Coopers & Lybrand LLP from 1967 until its merger with Pricewaterhouse LLP in 1998. From 1994 to 1998, Mr. Roberts served as one of three members of the Office of the chairman of Coopers & Lybrand’s United States operations. Prior to that time, Mr. Roberts held other positions at Coopers & Lybrand, including deputy vice chairman, vice chairman and managing partner. While serving in various executive capacities at PricewaterhouseCoopers, Mr. Roberts performed and supervised audit, tax and business consultative services, and developed extensive expertise in public company audits and financial reporting matters. Mr. Roberts serves on the boards of directors and audit committees of the following companies: Safeguard Scientifics, Inc., a provider of capital as well as strategic, operational and management resources to growth-stage businesses (since 2003; also serves on the compensation committee), the Pennsylvania Real Estate Investment Trust, a business trust with primary investment focus on retail shopping malls (since 2003; also serves on the compensation committee), and Vonage Holdings Corporation, a provider of communications services (since 2004). Mr. Roberts previously served on the board of directors of Sicor, Inc. (2002 to 2004) and served as a director of our former holding company, Armstrong Holdings, Inc. (2003 to 2006). Mr. Roberts brings an extensive public accounting background, financial expertise, experience as an accounting executive and as a board member of businesses in diverse industries, and risk management, strategic planning and corporate governance capabilities to our Board.

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

		Gregory P. Spivy Director since: 2014 Age: 46   Independent

Mr. Spivy is a Partner of ValueAct Capital. Prior to joining ValueAct Capital in September 2004, Mr. Spivy worked with Gryphon Investors, a private equity fund with $500 million in investments. Previously, Mr. Spivy was a Managing Director at Fremont Partners (“Fremont”), a private equity firm. Prior to joining Fremont, Mr. Spivy was a Director with The Bridgeford Group, and began his career in the mergers and acquisitions department of Lehman Brothers. Mr. Spivy is the chairman of Seitel, Inc., a leading provider of seismic data to the oil and gas industry (since 2006). Mr. Spivy is the former chairman of MSD Performance, Inc., and a former director of KAR Auction Services, Inc., MDS, Inc., MSC Software Corp. and PRA International. Mr. Spivy brings his experience as a director of other public and private corporations, his advisory experience with ValueAct Capital’s portfolio companies as well as his extensive financial services industry experience generally to our Board.

		RICHARD E. WENZ Director since: 2010 Age: 65   Independent

Mr. Wenz is a private investor. From 2002 to 2003, Mr. Wenz was the chief executive officer of Jenny Craig International, a weight loss, weight management, and nutrition company. From 2000 to 2002, Mr. Wenz was an operating affiliate of DB Capital Partners. From 1997 to 2000, Mr. Wenz was president and chief operating officer of Safety 1^st, Inc. During 1995 and 1996, Mr. Wenz was the partner in charge of the Chicago office of The Lucas Group, a business strategy consulting firm. Prior to 1995, Mr. Wenz held senior executive positions with Professional Golf Corporation, Electrolux Corporation, The Regina Company and Wilson Sporting Goods Company. Mr. Wenz began his career in 1971 with Arthur Young & Co. (predecessor of Ernst & Young LLP) and left the firm as a partner in 1983. Mr. Wenz is a certified public accountant, and he serves on the board of directors of Summer Infant, Inc., a global designer, marketer, and distributor of branded juvenile health, safety and wellness products (since 2007) and serves as Chair of both the audit committee and compensation committee. Mr. Wenz also serves on the board of directors of Pet Supplies Plus. Mr. Wenz previously served on the boards of directors of Easton-Bell Sports, Inc. (2006 to 2014), Strategic Partners, Inc. (2004 to 2010), Hunter Fan Company (2002 to 2007), and Radica Games, Inc. (2004 to 2006). Mr. Wenz brings extensive senior executive leadership, board service, including audit committee, at companies with diverse businesses, public accounting, risk management, strategic planning and international experience to our Board.

ITEM 1 – ELECTION OF DIRECTORS (CONTINUED)

Agreement with Shareholder

As previously disclosed, we entered into a Nomination and Shareholder Agreement, dated December 15, 2014 (the “Nomination Agreement”), with ValueAct Capital Master Fund L.P., VA Partners I, LLC, ValueAct Capital Management, L.P., ValueAct Capital Management, LLC, ValueAct Holdings, L.P., ValueAct Holdings GP, LLC and Gregory P. Spivy (collectively, the “ValueAct Group”). Pursuant to the terms of the Nomination Agreement, we appointed Mr. Spivy to the Board to serve until the 2015 annual meeting of shareholders, and agreed to nominate Mr. Spivy for election to the Board at the annual meeting, provided, however, that if at any time the ValueAct Group ceases to own at least 7.5% of our common stock, par value $0.01 per share (“Common Shares”), Mr. Spivy will be required to resign from the Board and we will no longer be required to nominate Mr. Spivy for election at the annual meeting. Relative to this annual meeting, the ValueAct Group has agreed that it will: (i) vote in favor of our nominees to the Board at the annual meeting; and (ii) vote in accordance with the Board’s recommendation with respect to any routine matters.

Under the Nomination Agreement, the ValueAct Group is entitled to nominate a mutually acceptable replacement in the event that Mr. Spivy no longer serves as a member of our Board during the term of the Nomination Agreement, so long as the ValueAct Group continues to own at least 7.5% of our outstanding Common Shares. In addition, the ValueAct Group agreed (subject to certain exceptions) to certain restrictions on transactions involving us or our securities, including a restriction prohibiting the ValueAct Group from acquiring any beneficial ownership interest of 19.0% or more of our outstanding Common Shares. The Nomination Agreement will remain in effect until the earliest of: (i) our material breach of the Nomination Agreement that has not been cured within thirty (30) days after receipt of notice of such breach; (ii) the date immediately following the last day on which a shareholder of the Company may timely give notice of its intent to bring a proposal for consideration at the Company’s 2016 annual meeting; (iii) the date that is ninety (90) days after the date any ValueAct Group designee ceases to be a member of the Board; and (iv) a mutually agreed upon date.

CORPORATE GOVERNANCE

CORPORATE GOVERNANCE PRINCIPLES AND OTHER CORPORATE GOVERNANCE DOCUMENTS

Our Corporate Governance Principles include guidelines regarding the responsibilities, duties, service and qualifications of our Board, the determination of a director’s independence and any conflict of interests, Board access to management and independent advisors, director compensation and stock ownership requirements, Board committees and other matters relating to corporate governance. Our Corporate Governance Principles are available on our website under “Company Information” and then “Corporate Governance” http://www.armstrong.com/corporate/corporate-governance.html. Also available at the same location on our website are the charters of the Audit Committee, the Management Development and Compensation Committee (“Compensation Committee”), and Governance Committee of the Board, the Armstrong Code of Business Conduct and the Armstrong Code of Ethics for Financial Professionals. Our website is not part of this proxy statement and references to our website address in this proxy statement are intended to be inactive textual references only.

DIRECTOR INDEPENDENCE

It is the policy of the Company that the Board consist of a majority of directors who are not employees and are independent under all applicable legal and regulatory requirements, including the independence requirements of the NYSE. For purposes of evaluating the independence of directors, in accordance with our Corporate Governance Principles, the Board will consider all relevant facts and circumstances in making an independence determination, and not merely from the standpoint of the director, but also from that of persons or organizations with which the director has an affiliation. Consistent with our Corporate Governance Principles, to be considered “independent,” the Governance Committee has established qualifications to assist in the determination, which either meet or exceed the independence requirements of the NYSE.

The Board has determined that all of our directors, with the exception of Mr. Espe, our President and CEO, are independent under NYSE listing

standards and our Corporate Governance Principles. In addition, the Board has further determined that each of the members of the Audit Committee, the Compensation Committee and the Governance Committee are independent within the meaning of the NYSE listing standards, any applicable minimum standards required by the Securities and Exchange Act of 1934 (the “Exchange Act”) and enhanced standards required for membership on such committees by our Bylaws, namely that directors serving on such committees meet the independence criteria under both NYSE rules and Rule 10A-3(b)(1) under the Exchange Act.

BOARD’S ROLE IN RISK MANAGEMENT OVERSIGHT

The Board oversees the Company’s risk profile and management’s processes for assessing and managing risk, both as a full Board and through its committees, which meet regularly and report to the full Board. Management is charged with managing risk through robust internal policies and controls.

The Company has maintained an enterprise risk management program since 2005. Risk management is an integral part of the Company’s culture. Management’s role is to identify, mitigate, guide and review the efforts of our business units, consider whether the residual risks are acceptable, and approve plans to deal with serious risks. The Board’s role in risk management is to review the performance and functioning of the Company’s overall risk management function and management’s establishment of appropriate systems for managing risk. Specifically, the Board reviews management’s:

CORPORATE GOVERNANCE (CONTINUED)

Under the direction of a cross-functional steering committee composed primarily of senior corporate leaders, management provides its feedback on business unit risks during periodic business reviews and annual strategic planning discussions. The enterprise risk management steering committee periodically meets with designated risk mitigation owners and assesses control measures. In addition, the steering committee regularly reevaluates the appropriateness of risk assessments and priorities. This process includes identifying risks that could prevent achievement of business goals or plans. The internal audit group uses the resulting information as a basis for developing its audit plan.

Annually, the Board reviews summary reports that assess the strategic, operational, infrastructure and external risks facing the Company. Each Board committee, consistent with its charter, assists the Board in overseeing the review of certain risks that are particularly within its purview, including as described in “BOARD MEETINGS AND COMMITTEES” below.

BOARD’S ROLE IN SUCCESSION PLANNING

The Board is actively engaged and involved in talent management. The Board reviews the Company’s “Organization Vitality” in support of its business strategy at least annually. This includes a detailed discussion of the Company’s global leadership bench and succession plans with a focus on key positions at the senior officer level, including CEO. During 2014, the Board and the Compensation Committee, as well as an ad hoc CEO succession planning committee, met on several occasions in furtherance of these initiatives. In addition, the committees of the Board regularly discuss the talent pipeline for specific critical roles. High potential leaders are given exposure and visibility to Board members through formal presentations and informal events. More broadly, the Board is regularly updated on key talent indicators for the overall workforce, including diversity, recruiting and development programs.

BOARD LEADERSHIP STRUCTURE

Our Bylaws and Corporate Governance Principles provide the Board with the flexibility to determine what leadership structure works best for us, including whether the same individual should serve as both our Chairman and our CEO. In February

2010, the Board determined to split the positions of Chairman and CEO. At that time, Mr. O’Connor, who had been independent Lead Director from February 2008 through February 2010, was named Chairman and continues to serve in that capacity. The split of these positions allows Mr. Espe, our President and CEO, to focus on managing the business, while Mr. O’Connor, as Chairman, oversees the Board’s functions. The Board will continue to evaluate its leadership and governance structure within the context of the specific needs of the business, current Board composition, and the best interests of Company shareholders.

Responsibilities of the Chairman include recruiting new Board members, overseeing the evaluation and compensation of the CEO, ensuring an appropriate succession plan, overseeing independent evaluation of risk, coordinating Board meeting schedules and agenda, chairing and leading the discussions at the meetings, and overseeing the annual performance evaluations of the Board, its committees and its individual members. The Chairman ensures information provided by management to the Board is sufficient for the Board to fulfill its duties and communicates with other directors on key issues and concerns outside of regularly scheduled meetings. The Chairman is also responsible for ensuring the effective functioning of the committees through appropriate delegation to, and membership of, the committees. Finally, the Chairman provides effective leadership for our independent directors to facilitate the independent oversight required by our Bylaws and Corporate Governance Principles, including by ensuring that:

CORPORATE GOVERNANCE (CONTINUED)

COMMUNICATION WITH THE BOARD

Any person who wishes to communicate with the Board, nonemployee directors as a group, or individual directors, including the Chairman, may direct a written communication to the attention of the Corporate Secretary at the Company’s corporate offices at 2500 Columbia Avenue, Lancaster, Pennsylvania 17603. The Corporate Secretary will forward these communications to the intended recipient director(s). You may also send general messages to directors by email to directors@armstrong.com. If you wish to send an email message to the Governance Committee, including a recommendation regarding a prospective director, please send the message to the CorpGovernance@armstrong.com. The Corporate Secretary will forward these messages, as appropriate.

BOARD MEETINGS AND COMMITTEES

The Board met eight times during 2014, two of which were special meetings.

There are three standing committees of the Board: the Audit Committee, the Compensation Committee, and the Governance Committee, each described below.

Each standing committee has a charter and consists solely of ‘independent’ or ‘outside’ directors who meet applicable independence standards required by the NYSE, the U.S. Securities and Exchange Commission (the “SEC”), and the Internal Revenue Service, and under our Articles and Bylaws. Each committee reports to the Board regularly and evaluates the effectiveness of its performance annually. The membership of each committee is determined by the Board on the recommendation of the Governance Committee. The Company’s Corporate Governance Principles provide that (i) directors who are currently fully employed should not serve on more than two other corporate boards and (ii) other directors should not serve on more than four other corporate boards. The Board, after considering the circumstances of Mr. Roberts’ service on three other public company audit committees, determined that such service does not impact his ability to effectively serve on the Audit Committee.

All director nominees who served on the Board during 2014 participated in 100% of the meetings of

the Board and meetings of the Committees on which they served. Board members are expected to attend annual meetings in person or virtually, via the Internet.

Audit Committee    The Audit Committee met six times during 2014, one of which was a special meeting. The members of the Audit Committee are John J. Roberts (Chair), Tao Huang, Jeffrey Liaw, Larry S. McWilliams, and Richard E. Wenz. Under its charter, the Audit Committee:

Each member of the Audit Committee meets the NYSE and SEC financial literacy requirements. The Board has determined that each of Mr. Liaw, Mr. Roberts and Mr. Wenz, qualifies as an “Audit Committee Financial Expert” as defined in the Exchange Act. The Audit Committee regularly meets independently with the Company’s internal and independent auditors, with the leaders of the Company’s compliance function, and with management.

CORPORATE GOVERNANCE (CONTINUED)

Management Development and Compensation Committee    The Compensation Committee met five times during 2014. The members of the Compensation Committee are Stan A. Askren (Chair), James J. Gaffney, Michael F. Johnston, Larry S. McWilliams, James C. Melville, and Gregory P. Spivy. Under its charter, the Compensation Committee:

Nominating and Governance Committee    The Governance Committee met eight times during 2014, three of which were special meetings. The members of the Governance Committee are James J. Gaffney (Chair), James C. Melville, James J. O’Connor and John J. Roberts. Under its charter, the Governance Committee:

Other Committees    In addition to the three standing committees described above, members of the Board regularly meet on an ad hoc basis to discuss and approve matters through other committees that have been previously established by the Board. Such committees address such matters as refinancing, succession planning and crisis response. In connection with the Company’s secondary public offering transaction in March 2014, the Board established a pricing committee which met to review and approve the terms of the transaction.

COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION

None of the members of the Compensation Committee has ever been an officer or employee of the Company or its subsidiaries, or had any relationship with the Company that requires disclosure under applicable SEC regulations.

CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS

Any related party transaction that may arise is required to be reviewed and approved by the Governance Committee, who must have no connection with the transaction. Related party transactions would include transactions by the Company or any subsidiary with any director, director nominee, executive officer, shareholders owning more than 5% of the Company’s outstanding Common Shares, or immediate family member of any of the foregoing, and transactions with businesses affiliated with any director or director nominee that meet the specifications in Item 404 of Regulation S-K under the Exchange Act. The Chair of the Governance Committee has authority to approve transactions involving sums less than the disclosure threshold set in Item 404. The material details of any such matters are required to be disclosed to the Governance Committee at its next regular meeting.

CORPORATE GOVERNANCE (CONTINUED)

In connection with his appointment to the Board pursuant to the Nomination Agreement, Mr. Spivy, a Partner of ValueAct Capital, is entitled to receive an annual retainer (payable in cash) of $90,000 for his service on the Board, and an annual equity award in the form of restricted stock units (“Director RSUs”) under the 2008 Directors’ Stock Unit Plan, as amended (“Directors Stock Unit Plan”) having an aggregate fair market value of $105,000 (based on the closing price our Common Shares as reported by the NYSE on the date of grant). The annual retainer and Director RSUs award for Mr. Spivy’s service on the Board commencing in December 2014 through this current term were prorated from the date of his appointment to the Board. The Director RSUs are scheduled to vest on December 17, 2015. Mr. Spivy has directed that his cash retainers be directly paid to ValueAct Capital Management, L.P., and under an agreement with ValueAct Capital, Mr. Spivy is deemed to hold it for the benefit of ValueAct Capital Master Fund L.P., and indirectly for other members of the ValueAct Group.

SHAREHOLDER-RECOMMENDED DIRECTOR CANDIDATES

The Governance Committee will consider director candidates nominated by shareholders. The

procedures for recommending candidates are posted at www.armstrong.com/corporatena/article9748.html under “About Armstrong” and “Corporate Governance.” Shareholders who wish to suggest individuals for service on the Board are requested to review Article II, Section 4 of our Bylaws and supply the information required in (a) through (k) of that Section in a written request to the Corporate Secretary at the Company’s corporate offices at 2500 Columbia Avenue, Lancaster, Pennsylvania 17603.

When evaluating the candidacy of nominees proposed by shareholders, the Governance Committee may request additional information as it may consider reasonable to determine the proposed nominee’s qualifications to serve as a member of the Board. The procedure by which shareholders may recommend nominees to the Board described above reflects changes since our 2014 annual meeting. On July 25, 2014, the Board approved amendments to our Bylaws, including amendments to this process, which took effect immediately upon approval by the Board. The changes are more fully described and summarized in the Current Report on Form 8-K filed by the Company with the SEC on July 28, 2014.

COMPENSATION OF DIRECTORS

In establishing director compensation, including the overall value of compensation and the mix of cash and equity, the Board analyzes competitive market data and any underlying director compensation trends generally, and compares our program to those of similarly sized companies in comparable industries. The Board is compensated through a combination of annual retainers and equity grants in the form of stock units. The Board believes that this level of compensation supports the Company’s ability to attract directors with suitable backgrounds and experiences. A director who is an officer or employee of the Company or its subsidiaries is not compensated for service on the Board or on any committee of the Board.

In April 2013, the Governance Committee reviewed the compensation program for nonemployee directors, including the Directors Stock Unit

Plan. The review included an analysis of competitive market data and any underlying director compensation trends with assistance from an independent compensation consultant. Following that review, and a recommendation by the Governance Committee, the Board approved an increase of $5,000 to each annual retainer fee (cash and equity) for directors, and a $10,000 increase to each annual retainer fee (cash and equity) for the Chair, all effective June 21, 2013. The Governance Committee conducted a similar review in April 2014 and determined that no changes to the compensation program for nonemployee directors were necessary. On average, the total compensation levels, as well as cash and equity compensation levels, for our nonemployee directors approximate the 75^th percentile, on a per director basis.

Annual grants for the equity portion of the retainer are effective as of the first business day following the date of the annual meeting, and the amount of

each grant is determined by the NYSE closing price of our Common Shares on that date.

COMPENSATION OF DIRECTORS (CONTINUED)

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS, MANAGEMENT AND DIRECTORS

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS, MANAGEMENT AND DIRECTORS (CONTINUED)

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS, MANAGEMENT AND DIRECTORS (CONTINUED)

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS, MANAGEMENT AND DIRECTORS (CONTINUED)

Stock Ownership Guidelines

In accordance with our Corporate Governance Principles, each nonemployee director must acquire and then hold until six months following the end of his service, phantom units and/or Common Shares equal in value to three times the director’s annual retainer at the time he joined the Board. Directors endeavor to reach that level of ownership within five

years of joining the Board. With the exception of Messrs. Liaw and Spivy, all of the current directors have already achieved this ownership requirement. Mr. Espe is an officer of the Company and, therefore, not subject to the stock ownership guidelines for nonemployee directors. Messrs. Liaw and Spivy first became eligible to participate in the nonemployee director compensation program in February 2013 and December 2014, respectively.

ITEM 2 – RATIFICATION OF THE APPOINTMENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

The Audit Committee selected KPMG LLP to audit our consolidated financial statements and our internal control over financial reporting for 2015. In accordance with past practice, this selection will be presented to the shareholders for ratification at the annual meeting; however, consistent with the requirements of the Sarbanes-Oxley Act of 2002, the Audit Committee has ultimate authority in respect of the selection of our independent

registered public accounting firm. The Audit Committee may reconsider its selection if the appointment is not ratified by the shareholders.

A representative of KPMG LLP will be in attendance at the annual meeting to respond to appropriate questions and will be afforded the opportunity to make a statement at the meeting, if he or she desires to do so.

THE BOARD OF DIRECTORS RECOMMENDS THAT SHAREHOLDERS VOTE FOR THE RATIFICATION OF THE APPOINTMENT OF KPMG LLP.

AUDIT COMMITTEE REPORT

FEES PAID TO INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

COMPENSATION DISCUSSION AND ANALYSIS

Matthew J. Espe President and CEO

David S. Schulz Senior Vice President and CFO

Victor D. Grizzle Executive Vice President and CEO, Armstrong Building Products (“ABP”)

Donald R. Maier⁽²⁾ Executive Vice President and CEO, Armstrong Floor Products (“AFP”) and former Senior Vice President Global Operations Excellence

Mark A Hershey Senior Vice President, General Counsel, and Chief Compliance Officer

Thomas B. Mangas⁽³⁾ Former Executive Vice President and CEO, AFP

Executive Summary

Our Business

We are a global leader in the design and manufacture of floors and ceilings. As of December 31, 2014, we operated 31 plants in eight countries and had approximately 7,400 employees worldwide.

Executive Compensation Programs

Our executive compensation programs are designed to attract and retain high caliber talent, reward performance, and closely align the interests of our executives with the interests of our shareholders. We execute this philosophy through the payment of base salaries, cash incentive awards under our Management Achievement Plan (“MAP”), and grants of a combination of time-based and performance-based restricted stock units (“RSU” and “PSU”, respectively) and stock options under our 2011 Long-Term Incentive Plan (“LTIP”).

To focus our NEOs on delivering both short- and long-term results, a significant amount of their target total direct compensation (“TDC”, composed of base salary, short-term and long-term incentive compensation) mix is dependent upon achieving specified results and is, therefore, “at risk.” We also employ specific policies and practices to supplement our compensation philosophy, including:

COMPENSATION DISCUSSION AND ANALYSIS (CONTINUED)

2014 Business Highlights

In 2014, we focused on growing our core businesses in established and emerging markets and continued our disciplined effort to create an efficient and productive culture while facing challenging market conditions that included continued contraction of key commercial segments in the Americas and Europe.

Key performance highlights included:

We also made significant progress with respect to a variety of strategic, financial and operational initiatives.

COMPENSATION DISCUSSION AND ANALYSIS (CONTINUED)

2014 Executive Compensation Highlights

The MAP opportunity for NEOs with primary responsibilities at the Corporate level is weighted 100% to consolidated results. NEOs with business unit responsibilities are weighted 30% to consolidated results and 70% to the individual business unit. Our 2014 EBITDA performance resulted in a 76% MAP payout factor at the consolidated level, 24% below target. NEOs whose MAP was based on consolidated results received payouts at 76% of target, and one NEO whose MAP was based on both consolidated and business unit results received a payout at 85% of target. One NEO received a performance bonus based on an agreement entered into connection with his promotion.

Our three-year cumulative Return on Invested Capital (“ROIC”) performance (2012 – 2014 PSU plan) resulted in a 66% payout factor, 34% below target, reflecting actual performance relative to a goal that we did not achieve primarily due to an expectation of market recovery at the time the goal was established.

Our Compensation Committee did not make significant changes to our executive compensation philosophy or design but completed the following key activities:

COMPENSATION DISCUSSION AND ANALYSIS (CONTINUED)

The table below summarizes TDC paid or awarded to our NEOs during 2014. This table is not intended to be a substitute for the Summary Compensation Table (‘‘SCT’’) or Grants of Plan-Based Awards Table (‘‘GPBAT’’). Base salary reflects the total salary paid for 2014. 2014 MAP awards and LTIP awards are reflected in the SCT and GPBAT. LTIP awards represent an incentive for future performance, not current cash compensation, and are “at risk” of forfeiture.

2014 NEO TDC