Wait for a warm, sunny day. Raise a ladder against the eavestrough at the sight of the leak. Climb the ladder and remove any waste in the gutter.
Scrub the area, focusing extra attention along the seams and joints if any, using a wire brush. Clean away the loosened debris using a dry rag.
Apply a generous coating of silicone caulking using a caulking gun along the seams and joints. Use the nozzle of the caulking tube to push the caulking into the seams to make a solid seal.
Apply a generous coating of roofing cement over any minor holes and cracks found in the eaves using a putty knife.
Wait for a warm, sunny day. Raise a ladder against the eavestrough at the sight of the leak. Climb the ladder and remove any waste in the gutter.
Scrub the area around a major hole using a wire brush. Wipe away the debris using a dry rag.
Apply a generous coat of roofing cement using a putty knife around the hole. Fit a piece of sheet metal over the hole and firmly press it down onto the roofing cement. Hold the sheet metal down for several minutes.
Apply a coat of silicone caulking around the edge of the sheet metal using a caulking gun.
Coat the sheet metal with a layer of roofing cement using a putty knife.