Exhibit 99.13 IN THE UNITED STATES BANKRUPTCY COURT FOR THE DISTRICT OF DELAWARE In re ) ) ) ARMSTRONG WORLD INDUSTRIES, ) Chapter 11 INC., et al., ) Case No. 00-4471 (RJN) ) (Jointly Administered) Debtors ) - ------------------------------------- ) EXHIBIT 8.8-B FORM OF MANAGEMENT AGREEMENT AWI does not intend to enter into any new employment agreements with management in connection with consummation of its chapter 11 plan of reorganization.