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Home & Garden
Home Improvement
Building and Carpentry

Where is flashing used on a roof?


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Wiki User
September 16, 2009 6:21PM

it is used around the edges of the roof

actually, it's used in the valley's and anywhere the roof meets an outside wall... drip edge is used on the edges, except in areas where precautions must be taken against ice-dams.

Flashing is also used where anything passes through the roof

  • A window
  • A stink pipe
  • A flue
  • A chimney stack
  • A vent from a cooker
  • A vent from a bathroom with no outside window.
  • A drain in a flat roof

It is used anywhere there is a protrustion in the roof. Flashing can also be found around hvac units, scuppers, etc...