Westlake Royal Building Products
Celect® Cellular Composite Siding
Celect Siding
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Westlake is a global diversified industrial company that manufactures and supplies essential products that enhance the daily lives of people around the globe. Our products, now under a One Westlake brand, supply the necessary building blocks for everyday products across housing and infrastructure, packaging and healthcare, and automotive and consumer goods.

































2801 Post Oak Blvd., Suite 600, Houston, Texas 77056, United States of America