Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated December 20, 2010, relating to the consolidated financial statements and financial statement schedule of Quanex Building Products Corporation (the “Company”) (which expresses an unqualified opinion and includes an explanatory paragraph regarding the separation of the Company’s vehicular products and building products businesses), and the effectiveness of the Company’s internal control over financial reporting, appearing in the Annual Report on Form 10-K of the Company for the year ended October 31, 2010.

/s/ DELOITTE & TOUCHE LLP

Houston, Texas
April 1, 2011