For Further Information Contact:Media Relations – David R. Hansen – 713.960.9111 or mediarelations@westlake.comInvestor Relations – Steve Bender – 713.960.9111 or investorrelations@westlake.com

TRUGRAIN MADE WITH RESYSTA AT 2016 IBS

HOUSTON, TX, December 21, 2015 – Westech Building Products will feature its full line of TruGrain® made with Resysta® decking, siding and façade profiles, along with the complementary palette of stains and sealers at the upcoming 2016 International Builder’s Show (IBS) in Las Vegas, January 19-21, 2016. Along with Westech, its sister company North American Pipe Corporation (NAPCO) will feature its foundation building products. Both will be in booth C7937 in the Expo Hall.

At IBS, visitors will see the TruGrain façade, siding and decking profiles used in a full-size installation and NAPCO representatives will walk builders and contractors through a holistic approach to foundation waterproofing and drainage. Attendees can get a deeper look at building with TruGrain through a daily education program titled, “Your Home’s First Line of Defense: The Building Envelope” which will qualify for 0.5 hours of continuing education for those holding NAHB professional designations.

About WestechWestech Building Products, a Westlake company (NYSE: WLK), is a leading producer of fence, deck, rail, siding, window and door profiles servicing North America and export markets from headquarters in Houston, TX. For more information, visit westechbp.com .

About North American Pipe Corporation   North American Pipe Corporation, a Westlake company, is the second largest polyvinyl chloride (PVC) pipe manufacturer in the U.S. servicing multiple unique markets including foundation building products, municipal water and sewer, residential plumbing, irrigation, agricultural and consumer Do-It-Yourself (DIY). NAPCO also offers a broad range of standard and specialty piping, including brands such as Certa-Lok®, Yelomine™, Certa-Set®, Certa-Com™, CertaFlo™, Form-A-Drain® and CertaForm®. For additional information, visit www.northamericanpipe.com .

DISCLAIMER:All sales of Westech fence, deck and railing products are subject to Westech Building Products, Inc.’s standard terms and conditions of sale which are available upon request. Westech Building Products, Inc. makes no other warranty, express or implied, including but not limited to any warranty of merchantability or fitness for particular purpose. Westech and the Westech logo are registered trademarks of Westech Building Products, Inc.

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