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Installing Drip Apron and Felt Underlayment

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What happens here

Install a drip apron along the edges of the roof deck. This metal flashing directs water away from the fascia and siding. Next, roll out and install a felt underlayment (often referred to as tar paper or synthetic underlayment) over the entire roof deck. This layer provides an additional barrier against water intrusion.

Goal: Provide initial weather protection for the roof deck.

Tools and materials

  • Drip Apron — Directing water away from the roof edge
  • Felt Underlayment — Secondary water barrier for the roof
  • Knife — Cutting underlayment
  • Nail Gun Ridgid — Securing the drip apron