| melting occur | 0.39 | On houses with cold roofs, that melting occurs from the top down, without ice dams. | ||
| melting be | 0.26 | No melting is required, only a little sifting at most. |
| melting occur | 0.39 | On houses with cold roofs, that melting occurs from the top down, without ice dams. | ||
| melting be | 0.26 | No melting is required, only a little sifting at most. |