**Exhibit 31.2**

 

**Certification of Chief Financial Officer**

 

I, John F. Rebele, certifythat:

 

1.                                 I have reviewed this quarterly report on Form 10-Q ofBuilding Materials Corporation of America;

 

2.                                 Based on my knowledge, this report does not contain anyuntrue statement of a material fact or omit to state a material fact necessaryto make the statements made, in light of the circumstances under which suchstatements were made, not misleading with respect to the period covered by thisreport;

 

3.                                 Based on my knowledge, the financial statements, and otherfinancial information included in this report, fairly present in all materialrespects the financial condition, results of operations and cash flows of theregistrant as of, and for, the periods presented in this report;

 

4.                                 The registrant’s other certifying officer and I areresponsible for establishing and maintaining disclosure controls and procedures(as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) andinternal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and15d-(f))for the registrant and have:

 

a)                    Designed such disclosure controls and procedures, or caused suchdisclosure controls and procedures to be designed under our supervision toensure that material information relating to the registrant, including itsconsolidated subsidiaries, is made known to us by others within those entities,particularly during the period in which this report is being prepared;

 

b)                   Designed such internal control over financial reporting, or caused suchinternal control over financial reporting to be designed under our supervision,to provide reasonable assurance regarding the reliability of financialreporting and the preparation of financial statements for external purposes inaccordance with generally accepted accounting principles;

 

c)                    Evaluated the effectiveness of the registrant’s disclosure controls andprocedures and presented in this report our conclusions about the effectivenessof the disclosure controls and procedures, as of the end of the period coveredby this report based on such evaluation; and

 

d)                   Disclosed in this report any change in the registrant’s internal controlover financial reporting that occurred during the registrant’s most recentfiscal quarter that has materially affected, or is reasonably likely tomaterially affect, the registrant’s internal control over financial reporting;and

 

5.                                 The registrant’s other certifying officer and I havedisclosed, based on our most recent evaluation of internal control over financialreporting, to the registrant’s auditors and the audit committee of registrant’sboard of directors (or persons performing the equivalent functions):

 

a)                    All significant deficiencies and material weaknesses in the design oroperation of internal control over financial reporting which are reasonablylikely to adversely affect the registrant’s ability to record, process,summarize and report financial information; and

 

b)                   Any fraud, whether or not material, that involves management or otheremployees who have a significant role in the registrant’s internal control overfinancial reporting.

 
| Date:               | November 18,  2009           |
|---------------------|-----------------------------------|
|                |                              |
|                |                              |
| /s/  JOHN F. REBELE |                              |
|                |                              |
| Name:               | John  F. Rebele                   |
| Title:              | Senior  Vice President,           |
|                | Chief  Financial Officer          |
|                | and Chief Administrative  Officer |
|                     |                                   |  |  |

 

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