The WACC of Owens Corning (OC) is 9.4%.
| Range | Selected | |
| Cost of equity | 9.40% - 11.90% | 10.65% |
| Tax rate | 24.80% - 27.70% | 26.25% |
| Cost of debt | 4.30% - 4.60% | 4.45% |
| WACC | 8.4% - 10.4% | 9.4% |
| Category | Low | High |
| Long-term bond rate | 3.9% | 4.4% |
| Equity market risk premium | 4.6% | 5.6% |
| Adjusted beta | 1.2 | 1.25 |
| Additional risk adjustments | 0.0% | 0.5% |
| Cost of equity | 9.40% | 11.90% |
| Tax rate | 24.80% | 27.70% |
| Debt/Equity ratio | 0.2 | 0.2 |
| Cost of debt | 4.30% | 4.60% |
| After-tax WACC | 8.4% | 10.4% |
| Selected WACC | 9.4% | |