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Large valley with shingles Leaks take place below when the snow and ice accumulates causing ice dams Water leaks because the shingles are designed to shed the water On a steep roof |
Removed the shingles and applied base sheet making sure this turned up against both sides of the valley |
Base sheet was nailed down on both slopes under the shingles . |
Galvanized metal pan was installed and fastened in place |
Made sure this metal pan fastened in place before the smooth modified membrane was installed |
Installed the smooth modified membrane followed by the new shingles |
Bottom course of the shingles starts about 10 ft away from the base of the valley |
We also hand sealed the shingles with high grade urethane based caulk to make sure the new shingles are adhered with the existing older shingles and prevent wind damage |