EXHIBIT 23

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference in the Registration Statements on FormS-8(No.333-37024 & 333-173785) of W.R. Grace & Co. of our report dated February 27, 2013 relating to the financial statements, financial statement schedulesand the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP

McLean, Virginia

February 27, 2013

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