How is a roof leak found?
Finding the source takes patience. A careful look usually starts in the attic with a flashlight. Stained wood, damp insulation, rusted nail tips and frost on the underside of the deck all give clues. From there the work moves outside to the matching area of the roof.
Outside, the roofer checks the flashing, the vents and the shingles above the stain. When the cause is not obvious, a controlled water test can help. Water is run over one area at a time while someone watches the attic. It is slow, but it narrows things down.
Photos help everyone. Ask to see them, and take your own pictures of the ceiling stain with the date. They matter if the damage turns out to be part of an insurance claim, and our storm and hail damage page covers that situation. Do not climb onto an icy or snowy roof yourself.

