Exhibit 23.3

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in this Registration Statement on Form S-8 of our report dated February 27, 2013, relating to the consolidated financial statements of Masonite International Corporation, appearing in the Annual Report on Form 10-K of Masonite International Corporation for the year ended December 29, 2013.

/s/ DELOITTE LLP

Chartered Professional Accountants, Chartered Accountants

Licensed Public Accountants

Toronto, Canada

June 19, 2014