CAMBRIDGE, MASSACHUSETTS – NOVEMBER 8, 2011 – Grace Construction Products,an operating segment of W. R. Grace & Co. (NYSE: GRA), has announced that effective January 1, 2012, it is implementing price increases averaging 5% across North American concrete and masonry product lines. The pricing for certain products may increase by more than 10%.

The price increases are required due to continued demand for chemical streams globally, which has put pressure on the cost and availability of raw materials used in these product lines.

About Grace Construction Products

Grace Construction Products is a world-leading provider of technically superior concrete admixtures, fibers, surface treatments and products for decorative concrete that make concrete stronger, longer lasting, crack resistant, aesthetically pleasing and cost efficient. The company is also a leading manufacturer of waterproofing and air barrier systems, fire protection products, additives for cement processing and masonry products, and has plants and sales offices around the world. For more information, customers can contact their local Grace Construction Products sales representative or visit www.graceconstruction.com.

About Grace

Grace is a leading global supplier of catalysts and other products to petroleum refiners; catalysts for the manufacture of plastics; silica-based engineered and specialty materials for a wide range of industrial applications; sealants and coatings for food and beverage packaging, and specialty chemicals, additives and building materials for commercial and residential construction. Founded in 1854, Grace has operations in over 40 countries. For more information, visit Grace’s web site at www.grace.com.