The WACC of Owens Corning (OC) is 9.4%.
| Range | Selected | |
| Cost of equity | 9.10% - 12.10% | 10.60% |
| Tax rate | 24.80% - 27.70% | 26.25% |
| Cost of debt | 4.30% - 4.50% | 4.40% |
| WACC | 8.2% - 10.7% | 9.4% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.14 | 1.29 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 9.10% | 12.10% |
| Tax rate | 24.80% | 27.70% |
| Debt/Equity ratio | 0.19 | 0.19 |
| Cost of debt | 4.30% | 4.50% |
| After-tax WACC | 8.2% | 10.7% |
| Selected WACC | 9.4% | |