Exhibit 99.1

JOINT FILING AGREEMENT

This will confirm the agreement among the undersigned that the Schedule 13D filed on or about this date and any amendments thereto with respect to beneficial ownership by the undersigned of the common shares, no par value of West Fraser Timber Co. Ltd. is being filed on behalf of each of the undersigned in accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended.

Dated: April 28, 2021	BROOKFIELD ASSET MANAGEMENT INC.
	By:	/s/ Kathy Sarpash
		Name: Kathy Sarpash
		Title: Senior Vice President
	BAM PARTNERS TRUST, by its trustee, BAM CLASS B PARTNERS INC.
	By:	/s/ Kathy Sarpash
		Name: Kathy Sarpash
		Title: Secretary
	BROOKFIELD INVESTMENTS CORPORATION
	By:	/s/ Thomas Corbett
		Name: Thomas Corbett
		Title: Vice President and Chief Financial Officer
	BIC WFG PARTNERS LP, by its general partner, BAM LIMITED
	By:	/s/ Kathy Sarpash
		Name: Kathy Sarpash
		Title: Vice President and Secretary
	BPE OSB INVESTMENT HOLDING LP, by its general partner, BROOKFIELD PRIVATE EQUITY INC.
	By:	/s/ A.J. Silber
		Name: A.J. Silber
		Title: Director
	BROOKFIELD CAPITAL PARTNERS II L.P., by its general partner, BROOKFIELD CAPITAL PARTNERS II GP L.P., by its general partner, BROOKFIELD CAPITAL PARTNERS LTD.
	By:	/s/ A.J. Silber
		Name: A.J. Silber
		Title: Chairman of the Board
	BROOKFIELD CAPITAL PARTNERS LTD.
	By:	/s/ A.J. Silber
		Name: A.J. Silber
		Title: Chairman of the Board
	BROOKFIELD PRIVATE EQUITY INC.
	By:	/s/ A.J. Silber
		Name: A.J. Silber
		Title: Director

SCHEDULE VIII

BAM CLASS B PARTNERS INC.

Name and Position of Officer or Director	Principal Business Address	Principal Occupation or Employment	Citizenship
Jack L. Cockwell, Director and Vice President	51 Yonge Street, Suite 400, Toronto, Ontario M5E 1J1, Canada	Chair of Brookfield Partners Foundation	Canada
Bruce Flatt, Director and Vice President	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Managing Partner and Chief Executive Officer, Brookfield	Canada
Brian D. Lawson, Director and President	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Vice Chair, Brookfield	Canada
Kathy Sarpash, Secretary	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Senior Vice-President of Brookfield	Canada

SCHEDULE IX

BIC WFG HOLDINGS LP

by its general partner, BAM LIMITED

Name and Position of Officer or Director	Principal Business Address	Principal Occupation or Employment	Citizenship
Thomas Douglas Corbett, Director	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Managing Director of Brookfield	Canada
Karly Dyck, Director	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Senior Vice-President of Brookfield	Canada
Aleksandar Novakovic, Director	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Managing Partner of Brookfield	Canada
Kathy Sarpash, Director, Vice-President and Secretary	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Senior Vice-President of Brookfield	Canada
Cam Ha, President	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Vice-President of Brookfield	Canada
Bowen Li, Vice-President	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Director, Finance of Brookfield	Canada
Tim Wang, Vice-President	181 Bay Street, Suite 300, Toronto, Ontario M5J 2T3, Canada	Director, Capital Markets & Treasury of Brookfield	Canada