Attached files

file filename
EX-21 - LIST OF SUBSIDIARIES OF THE COMPANY - Koppers Holdings Inc.d272249dex21.htm
EX-32.1 - SECTION 906 CEO AND CFO CERTIFICATION - Koppers Holdings Inc.d272249dex321.htm
EX-31.1 - SECTION 302 CEO CERTIFICATION - Koppers Holdings Inc.d272249dex311.htm
EX-31.2 - SECTION 302 CFO CERTIFICATION - Koppers Holdings Inc.d272249dex312.htm
EX-12.1 - COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES - Koppers Holdings Inc.d272249dex121.htm
EX-10.64 - NOTICE OF GRANT OF STOCK OPTION - Koppers Holdings Inc.d272249dex1064.htm
EX-10.63 - RESTRICTED STOCK UNIT ISSUANCE AGREEMENT - PERFORMANCE VESTING - Koppers Holdings Inc.d272249dex1063.htm
EX-10.62 - RESTRICTED STOCK UNIT ISSUANCE AGREEMENT - TIME VESTING - Koppers Holdings Inc.d272249dex1062.htm
EX-10.69 - SECOND AMENDMENT TO THE CREDIT AGREEMENT - Koppers Holdings Inc.d272249dex1069.htm
10-K - FORM 10-K - Koppers Holdings Inc.d272249d10k.htm

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement Form S-3 No. 333-136329 of Koppers Holdings Inc. and in the related Prospectus for the registration of debt securities, common stock, preferred stock and warrants and in the Registration Statement Form S-8 No. 333-135449 pertaining to the Koppers Holdings Inc. 2005 Long Term Incentive Plan of our reports dated February 27, 2012, with respect to the consolidated financial statements and schedule of Koppers Holdings Inc., and the effectiveness of internal control over financial reporting of Koppers Holdings Inc., included in this Annual Report (Form 10-K) for the year ended December 31, 2011.

/s/ ERNST & YOUNG LLP

Pittsburgh, Pennsylvania

February 27, 2012