The WACC of Owens Corning (OC) is 9.0%.
| Range | Selected | |
| Cost of equity | 8.90% - 11.40% | 10.15% |
| Tax rate | 24.80% - 27.70% | 26.25% |
| Cost of debt | 4.30% - 4.50% | 4.40% |
| WACC | 7.9% - 10.0% | 9.0% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.09 | 1.17 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 8.90% | 11.40% |
| Tax rate | 24.80% | 27.70% |
| Debt/Equity ratio | 0.21 | 0.21 |
| Cost of debt | 4.30% | 4.50% |
| After-tax WACC | 7.9% | 10.0% |
| Selected WACC | 9.0% | |