RADNOR HOLDINGS CORP
AFFIRMATION OF GUARANTY AGREEMENT
<DOCUMENT>
<TYPE>EX-10.8
<SEQUENCE>12
<FILENAME>dex108.txt
<DESCRIPTION>AFFIRMATION OF GUARANTY AGREEMENT
<TEXT>
<PAGE>

                                                                    EXHIBIT 10.8

                        AFFIRMATION OF GUARANTY AGREEMENT

         Reference is made to that certain  Fourth  Amended and Restated
Revolving Credit and Security Agreement dated December 26, 2001, among WinCup
Holdings, Inc., Radnor Chemical Corporation, StyroChem U.S., Ltd., Radnor
Holdings Corporation, Radnor Delaware II, Inc., StyroChem Delaware, Inc., WinCup
Texas, Ltd., StyroChem G.P., L.L.C., StyroChem L.P., L.L.C., WinCup G.P.,
L.L.C., WinCup L.P., L.L.C., (each individually a "Borrower" and collectively,
"Borrowers") and PNC Bank, National Association as Agent ("Agent") for itself
and the financial institutions which are now or which hereafter become a party
thereto (individually, a "Lender" and collectively, the "Lenders") (as amended
by that certain First Amendment to Fourth Amended and Restated Revolving Credit
and Security Agreement, dated February 4, 2002 and that certain letter
agreement, dated March 21, 2002, collectively, the "Credit Agreement").

         Pursuant to the terms of the Credit Agreement, Agent and Lenders made
available to Borrowers a revolving credit facility in the amount of Thirty-Five
Million Dollar ($35,000,000). On December 26, 2001, the undersigned executed and
delivered to Agent for the benefit of Lenders an Amended and Restated Guaranty
Agreement whereby undersigned unconditionally guaranteed, inter alia, all
present and future obligations and liabilities of each Borrower to Agent and/or
Lenders (the "Guaranty Agreement").

         Borrowers have requested and Agent and Lenders have agreed pursuant to
the terms of that certain Second Amendment to Fourth Amended and Restated
Revolving Credit and Security Agreement (the "Second Amendment") among
Borrowers, Agent and Lenders dated the date hereof, to, inter alia, amend the
Credit Agreement to (i) increase the revolving credit facility to an amount not
to exceed Forty-Five Million Dollars ($45,000,000) and (ii) advance a term loan
in the amount of Forty-Five Million Dollars ($45,000,000).

         The undersigned hereby (i) acknowledges that undersigned has read the
terms and conditions of the Second Amendment, (ii) consents to the terms and
conditions of the Second Amendment and (iii) agrees that its Guaranty Agreement
shall continue in full force and effect and shall continue to cover all
Obligations (as defined in the Credit Agreement), including without limitation,
the Term Loan (as defined in the Second Amendment) in accordance with the terms
of the Guaranty Agreement, as affirmed hereby.

         Dated: March 5, 2003

                                   RADNOR MANAGEMENT DELAWARE, INC.

                                   By: /s/ R. Radcliffe Hastings
                                      ------------------------------------------
                                           R. Radcliffe Hastings, Senior V.P.





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