Exhibit 31.1
CERTIFICATION
I, Michael H. Thaman, certify that:
| 1. | I have reviewed this quarterly report on Form 10-Q/A of Owens Corning; |
| 2. | Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report. |
Date: May 28, 2008
/s/ Michael H. Thaman |
| Michael H. Thaman |
| Chief Executive Officer |
