EXHIBIT 99.1

Consent of Director Nominee

US LBM Holdings, Inc.

1000 Corporate Grove Drive

Buffalo Grove, Illinois 60089

Pursuant to Rule 438 of Regulation C promulgated under the Securities Act of 1933, as amended (the “Securities Act”), in connection with the Registration Statement on Form S-1 (No. 333-217816) (the “Registration Statement”) of US LBM Holdings, Inc. (the “Company”), the undersigned hereby consents to being named and described as a director nominee in the Registration Statement and any amendment or supplement to any prospectus included in such Registration Statement, and any amendment to such Registration Statement, and to the filing or attachment of this consent with such Registration Statement and any amendment or supplement thereto.

[remainder of page intentionally left blank]

IN WITNESS WHEREOF, the undersigned has executed this consent as of June 26, 2017.

/s/ Michael T. Kestner

Name : Michael T. Kestner

[Signature Page to Consent]