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Tuck Flashing Under Siding

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Be classy, tuck your shirts in and tuck your flashing in 🫡

What happens here

Carefully slide the vertical flange of the L-shaped flashing underneath the bottom edge of the house siding. Work slowly and ensure the flashing goes behind the siding, creating a seamless overlap. Apply gentle pressure, wiggling the flashing if necessary, to tuck it securely into place. The horizontal flange should rest flat on the top surface of the deck joists.

Goal: Slide the flashing securely under the house siding.

Tools and materials

  • Deck Joists — The surface on which the horizontal flange of the flashing rests
  • House Siding — The element under which the flashing is tucked
  • L-shaped Flashing — Being installed under the siding