Exhibit 32.1


                    CERTIFICATION OF CEO AND CFO PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002



            In connection with the Quarterly Report on Form 10-Q of Building
Materials Corporation of America (the "Company") for the quarterly period ended
July 1, 2007 as filed with the Securities and Exchange Commission on the date
hereof (the "Report"), Robert B. Tafaro, as Chief Executive Officer and
President of the Company, and John F. Rebele, as Senior Vice President, Chief
Financial Officer and Chief Administrative Officer of the Company, each hereby
certifies, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section
906 of the Sarbanes-Oxley Act of 2002, that, to the best of his knowledge and
belief:


            (1)   The Report fully complies with the requirements of Section
                  13(a) or 15(d) of the Securities Exchange Act of 1934; and

            (2)   The information contained in the report fairly presents, in
                  all material respects, the financial condition and results of
                  operations of the Company.


   /s/ Robert B. Tafaro
--------------------------------------
Name:  Robert B. Tafaro
Title: Chief Executive Officer and President

Date:  August 15, 2007






   /s/ John F. Rebele
--------------------------------------
Name:  John F. Rebele
Title: Senior Vice President,
       Chief Financial Officer
       and Chief Administrative Officer

Date:  August 15, 2007



            This certification accompanies the Report pursuant to Section 906 of
the Sarbanes-Oxley Act of 2002 and shall not, except to the extent required by
the Sarbanes-Oxley Act of 2002, be deemed filed by the Company for purposes of
Section 18 of the Securities Exchange Act of 1934, as amended.