ADDITIONAL PARTY ADDENDUM

Deutsche Bank AG New York Branch is executing this Additional Party Addendum in its capacity as collateral agent (the “Collateral Agent”) under the Junior Lien Term Loan Agreement (amending and restating in its entirety the Bridge Loan Agreement dated as of February 22, 2007, the “Existing Bridge Loan Agreement”) dated as of March 15, 2007 (the “Loan Agreement”), among Building Materials Corporation of America and certain of its Subsidiaries and the lenders party thereto from time to time. The Loan Agreement amends and restates in its entirety the Existing Bridge Loan Agreement and constitutes the Junior Lien Obligations under the Intercreditor Agreement, and the Collateral Agent is the replacement for the Existing Junior Lien Collateral Agent. By execution of this Additional Party Addendum, the Collateral Agent hereby acknowledges and agrees to be bound by the terms of the Intercreditor Agreement as the Junior Lien Collateral Agent, as if originally so bound. The Collateral Agent represents and warrants that it has received a copy of each of the First Lien Documents and the Junior Lien Documents and satisfies each and all of the criteria set forth therein for the assumption of its role as a Junior Lien Collateral Agent. Accompanying this Additional Party Addendum is the Officers’ Certificate contemplated by Section 8.3 of the Intercreditor Agreement.