EX-23 3 exhibit231-2017auditorscon.htm EXHIBIT 23
Exhibit 23
Consent of Independent Registered Public Accounting Firm
We have issued our reports dated February 28, 2018, with respect to the consolidated financial statements, financial statement schedule, and internal control over financial reporting included in the Annual Report of Simpson Manufacturing Co., Inc. on Form 10-K for the year ended December 31, 2017. We consent to the incorporation by reference of said reports in the Registration Statements of Simpson Manufacturing Co., Inc. on Forms S-8 (File Nos. 033-90964, 333-37325, 333-40858, 333-97313, 333-97315, 333-173811, and 033-85662).
/s/ Grant Thornton LLP
San Francisco, California
February 28, 2018
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