How to Repair a Leaky Roof
Causes of Leakage Occasionally metal-wall flashing may warp and be drawn out of the groove or joint in the vertical surface or, when roll roofing is used, it may break at its junction with the vertical surface, allowing water to run down behind it. The force of the wind may tear flashing loose from the face of the roofing allowing water to enter under it during heavy rains. Valley flashings, if too narrow, may allow water that is backing up to find its way under the roofing which can then le