Sure Seal Roofing
Gutter Hangers: how and where to install
Poorly installed gutter hangers are a common problem we run into at Sure Seal. Common sense says not to put fasteners through the face of your shingles, but it happens. If your gutters are hung like this, you are looking at damage to your roof deck.
Gutter hangers should be fastened underneath shingles so that the fasteners are covered and protected from weather