Leadwork - Lead Flashing Examples Common To Houses

Step Flashing

Step flashing (soaker, base flashing) – Consists of pieces of flashing material, in this example lead, which overlaps each other in “steps”.

In this example of chimney flashing the lead forms a seal between the brickwork and the roof slate tiles creating a permanent watertight seal.

Valley Flashing

Valley flashing – In the valley of two intersecting roof planes.

In this example of valley flashing the flashing forms a seal between the intersecting slate roof tiles enabling rain water to run off as well as creating a seal above the roof lining.

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Other lead flashing types not shown above are as follows:

Channel flashing is shaped like a U or channel to catch water such as where the edge of a tile roof meets a wall.
  • Through wall flashing – Spans the thickness of the wall and directs water to weep holes.
  • Cap flashing (drip cap) often used above windows and doors.
  • Drip edge – A metal used at the edges of a roof.
  • Counter flashing (cap flashing) – Covers a base flashing.
  • Pipe flashing – (pipe boot, vent boot) A product used where pipes penetrate roofs.
  • Kickout flashing – At the very bottom of a roof/wall intersection, the lowermost step flashing specially formed to deflect water away from the wall.
  • Valley flashing – In the valley of two intersecting roof planes.
  • Roof flashing is placed around discontinuities or objects which protrude from the roof of a building to deflect water away from seams or joints and in valleys where the runoff is concentrated.
  • Wall flashing may be embedded in a wall to direct water that has penetrated the wall back outside, or it may be applied in a manner intended to prevent the entry of water into the wall. Wall flashing is typically found at interruptions in the wall, such as windows and points of structural support.
  • Sill flashing or sill pan is a concealed flashing placed under windows or door thresholds to prevent water from entering a wall at those points.
  • Roof penetration flashing are used to waterproof pipes, supports, cables, and all roof protrusions.
  • Stainless steel penetration flashings have proven to be the longest lasting and most reliable roof flashing type.
  • Channel flashing is shaped like a U or channel to catch water such as where the edge of a tile roof meets a wall.