Exhibit 99.1

Joint Filing Agreement

The undersigned hereby agree that the Statement on Schedule 13G dated June 21, 2021 with respect to the Common Stock, $0.0001 par value per share, of Armstrong Flooring, Inc., and any amendments thereto executed by each and any of the undersigned shall be filed on behalf of each of the undersigned pursuant to and in accordance with the provisions of Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended.

Dated: June 21, 2021	22NW FUND, LP
	By:	22NW Fund GP, LLC General Partner
	By:	/s/ Aron R. English
		Name:	Aron R. English
		Title:	Manager

22NW, LP
By:	22NW GP, Inc. General Partner
By:	/s/ Aron R. English
	Name:	Aron R. English
	Title:	President and Sole Shareholder

22NW FUND GP, LLC
By:	/s/ Aron R. English
	Name:	Aron R. English
	Title:	Manager

22NW GP, INC.
By:	/s/ Aron R. English
	Name:	Aron R. English
	Title:	President and Sole Shareholder

/s/ Aron R. English

ARON R. ENGLISH