Core Natural Resources 8-K Other Events

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference of our report dated December 22, 2008, with respect to the consolidated financial statements and schedule of NCI Building Systems, Inc., for the year ended November 2, 2008 included in this Current Report on Form 8-K dated September 10, 2009 for the year ended November 2, 2008 in the following Registration Statements and related prospectuses.

NCI Building Systems, Inc. Form S-8	File No. 333-124266
NCI Building Systems, Inc. Form S-8	File No. 333-111139
NCI Building Systems, Inc. Form S-8	File No. 333-34899
NCI Building Systems, Inc. Form S-8	File No. 333-12921
NCI Building Systems, Inc. Form S-8	File No. 333-111142
NCI Building Systems, Inc. Form S-8	File No. 333-139983
NCI Building Systems, Inc. Form S-3	File No. 333-122457
NCI Building Systems, Inc. Form S-3	File No. 333-156448

/s/ Ernst & Young LLP

Houston, Texas
September 10, 2009