Georgia Gulf Corporation (NYSE: GGC) (“Georgia Gulf”) today announced the commencement of a private offering of an expected $450 million in aggregate principal amount of unsecured senior notes due 2023 (the “Notes”). The exact terms of the offering will depend upon market conditions and other factors. Georgia Gulf currently intends to use the net proceeds from the offering of the Notes, together with cash on hand and available borrowings, to fund the repurchase and/or redemption of any and all of Georgia Gulf’s outstanding 9 percent senior secured notes due 2017. The offering of the Notes will be made in a private transaction in reliance upon an exemption from the registration requirements of the Securities Act of 1933, only in the United States to investors who are “qualified institutional buyers,” as that term is defined in Rule 144A under the Securities Act, or outside the United States to investors who are persons other than “U.S. persons,” as that term is defined in Rule 902 under the Securities Act, in offshore transactions in reliance upon Regulation S under the Securities Act. The Notes have not been registered under the Securities Act of 1933 or any state securities laws and may not be offered or sold in the United States absent registration or an applicable exemption from the registration requirements. This press release does not constitute an offer to sell or the solicitation of an offer to buy any security and shall not constitute an offer, solicitation or sale in any jurisdiction in which such offer, solicitation or sale would be unlawful. About Georgia Gulf Georgia Gulf Corporation is a leading, integrated North American manufacturer of two chemical lines, chlorovinyls and aromatics, and manufactures vinyl-based building and home improvement products. The Company’s vinyl-based building and home improvement products are marketed under Royal Building Products and Exterior Portfolio brands. Georgia Gulf, headquartered in Atlanta, Georgia, has manufacturing facilities located throughout North America to provide industry-leading service to customers. For more information, visit www.ggc.com. Georgia Gulf announced January 14, 2013, that when its pending merger with PPG Industries Inc.’s (NYSE: PPG) (“PPG”) commodity chemicals business is completed, the combined organization will be Axiall Corporation and will be traded on the New York Stock Exchange under the ticker symbol of AXLL. More information about Axiall and the pending company’s brand story can be found at www.axiallcorp.com. Safe Harbor This communication contains certain statements relating to future events and our intentions, beliefs, expectations, and predictions for the future. Any such statements other than statements of historical fact are forward-looking statements within the meaning of the Securities Act of 1933 and the Securities Exchange Act of 1934. Words or phrases such as “will likely result,” “are expected to,” “will continue,” “is anticipated,” “we believe,” “we expect,” “estimate,” “project,” “may,” “will,” “intend,” “plan,” “believe,” “target,” “forecast,” “would” or “could” (including the negative or variations thereof) or similar terminology used in connection with any discussion of future plans, actions, or events, including with respect to the proposed separation of PPG’s commodity chemicals business from PPG and the merger of the PPG commodity chemicals business and Georgia Gulf (the “Transaction”), and the offering of the Notes described above (the “Offering”), generally identify forward-looking statements. These forward-looking statements include, but are not limited to, statements regarding the expected benefits of the Transaction, and the expected timing of completion of the Transaction and the Offering, Georgia Gulf’s anticipated use of the proceeds of the Offering, and Georgia Gulf’s anticipated future financial and operating performance and results, including its respective estimates for growth. These statements are based on the current expectations of the management of Georgia Gulf. There are a number of risks and uncertainties that could cause Georgia Gulf’s actual results to differ materially from the forward-looking statements included in this communication. These risks and uncertainties include risks relating to (i) conditions to the closing of the Transaction not being satisfied, (ii) a material adverse change, event or occurrence affecting Georgia Gulf or the PPG commodity chemicals business prior to the closing of the Transaction delaying the Transaction or causing the companies to abandon the Transaction, (iii) problems arising in successfully integrating the businesses of the PPG commodity chemicals business and Georgia Gulf, which may result in the combined company not operating as effectively and efficiently as expected, (iv) the possibility that the Transaction may involve other unexpected costs, liabilities or delays, (v) the businesses of each respective company being negatively impacted as a result of uncertainty surrounding the Transaction, (vi) disruptions from the Transaction harming relationships with customers, employees or suppliers, (vii) adverse market conditions or other events that may impact the ability to successfully complete the Offering within the expected timing, and (viii) uncertainties regarding future prices, industry capacity levels and demand for Georgia Gulf’s products, raw materials and energy costs and availability, feedstock availability and prices, changes in governmental and environmental regulations, the adoption of new laws or regulations that may make it more difficult or expensive to operate Georgia Gulf’s businesses or manufacture its products before or after the Transaction, Georgia Gulf’s ability to generate sufficient cash flows from its business before and after the Transaction, future economic conditions in the specific industries to which its products are sold, and global economic conditions.