Water – How to prevent water from getting behind the gutter

guttersroofingwater

A friend of mine is having a water problem; the water is coming down behind the gutter. It turns out the drip edge isn't covering up the gutter completely on the one side for a considerable length of the house, as the gutter slants downward. Is there a way to fix this? Is there a flashing you can use, or something else?

Note that this started happening after a recent replacement of a roof. I've included some pictures of what this looks like.

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Best Answer

Carefully raise the lowest shingles on the roof line. Slip an additional shingle in under those shingles - install them oriented so the normally top edge of the shingle is the bottom edge (but make sure they stay face up).

Nail in place as high up as you can close to the layer of shingles above, leaving a 1" over hang over the gutter to create a new drip edge. Install using proper roofing nails.

Run a 3/8" bead of roofing caulk (black tar like substance) along the top edge of that new layer of shingles, then lay the old layer of shingles back down on top of the new drip edge.