Investor Presentaiton

The joint venture partners BORAL® USG Overview of BORAL (ASX: BLD) " " A$3.7bn market cap (US$3.5bn)1 A$5.3bn (US$5.4bn)² revenue in FY20133 12,610 employees as of 30 June 2013 Construction Materials, Building Products and Gypsum Australia, Asia and US Overview of USG (NYSE: USG) ☐ US$3.0bn market cap1 US$3.2bn revenue in FY20123 8,500 employees as of 31 December 2012 Gypsum, Ceilings and Product Distribution North America, South America, Asia and Middle East Segment revenue - FY2013 Geographic revenue - FY2013 Segment revenue - FY2012 Geographic revenue - FY2012 Boral USA 11% Boral USA 11% Product distribution4 31% Canada 12% Asia Other 8% Gypsum 18% 11% Building Products 11% Construction Materials & Cement 60% Australia 78% Ceilings 16% Gypsum 53% United States 80% 1. Source: Company reports. Share price from IRESS and Factset as at 10 October 2013. Based on A$/US$ exchange rate of 0.95 as at 10 October 2013 2. Based on average A$/US$ exchange rate of 1.02 for the year ended 30 June 2013 3. Boral's financial year ended 30 June 2013; USG's financial year ended 31 December 2012 4. USG's Product Distribution business outside Asia and the Middle East and Boral's Building Products division (which includes Bricks, Roofing, Timber & Windows) are not a part of the Joint Venture transaction Overview of joint venture operations in Asia, Australasia and the Middle East Korea Boral operations BLD 50% USG Boral Building Products1 USG 50% Thailand/ Philippines Indonesia Vietnam Aus/NZ China Malaysia/ Singapore India 7 BORAL® USG Middle East USG operations 153m m² (1.6 BSF)² capacity & Boral sales presence ■ USG sales presence 1. 2. ▪ 105m m² (1.1 BSF) capacity in Thailand & Boral sales presence (71% interest) ■ Gypsum mine ■ Boral metal products ■ USG sales presence ▪ 65m m² (0.7 BSF) capacity & Boral sales presence ■ Boral metal products ■ USG sales presence Actual structure will be via two JV legal entities ■ 42m m² (0.5 BSF) capacity³ & Boral sales presence ■ Boral metal products USG sales presence m m² refers to million square metres; BSF refers to billion square feet USG TECHNOLOGY ▪ 86m m² (0.9 BSF) capacity & Boral sales presence in Australia ■ 50% Rondo metal products ■ 50% GRA gypsum mine ■ USG NZ grid manufacturing ■ USG sales presence ■ 155m m² (1.7 BSF) capacity³ & Boral sales presence ■ Boral metal products ■ 50% interest in USG ceiling tile, metal ceiling grid & mineral wool manufacturing 3. Post completion of capacity expansion at Ho Chi Minh City (Vietnam) and Chongqing (China) in financial year ending 30 June 2014 and construction of new plant in Oman in calendar year 2014 (CY2014) 4. Post completion of manufacturing facility expected in 1Q CY2014 ▪ 10m m² (0.1 BSF) capacity in Malaysia & Boral sales presence ■ 50% Rondo metal products ■ USG joint compound manufacturing ■ USG sales presence ▪ 9m m² (0.1 BSF) capacity & Boral sales presence ■ Boral metal products ■ 50% Rondo metal products ■ USG Joint Compound plant4 ■ USG sales presence ■ Boral sales presence ■ 50% interest in 8m m2 (0.1 BSF) plant in Oman³ ■ 55% interest in Oman gypsum mine ■ 45% interest in ceiling, metal ceiling grid, metal stud, and joint compound plant in Saudi Arabia 8

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