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Roof-to-wall and deck-ledger flashing before cover checklist

A pre-cover flashing checklist for roof-to-wall step and kickout flashing, deck-ledger water management, wall and roof membrane integration, end conditions, fasteners, siding and roofing clearances, penetrations, corrosion compatibility, drainage path, structural attachment separation, and photographs before shingles, siding, or decking hides the details.

6 items to check

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Wall, roof, ledger, sheathing, and framing conditions are sound before flashing

Critical item

Flashing should not conceal rot, failed prior repairs, or structural damage.

Step flashing and kickout flashing are complete and integrated with roofing and WRB

Critical item

Water should be directed away from the wall and into the drainage system rather than behind cladding.

Ledger top, ends, bottom, fasteners, spacers, and wall membrane are detailed to drain

Critical item

The ledger connection should not trap water or depend solely on exposed caulk.

Metals, membranes, treated lumber, fasteners, and sealants are compatible

Critical item

Materials should resist corrosion and chemical incompatibility in the actual exposure.

Siding, roofing, decking, gutters, and drainage preserve clearances and inspection paths

Critical item

Finishes should not bridge or bury flashing outlets.

Flashing sequence, structural separation, repairs, and photos are approved before cover

Adjacent trades should not cover the interface until both structural and water-management checks pass.

Use where a roof meets a wall or a deck ledger attaches to a building, before adjacent finishes conceal the interfaces. Structural ledger attachment and roof waterproofing should be reviewed separately but coordinated. Do not use unsafe ladders, walk roofs, remove structural support, or disturb lead, asbestos, or mold-containing assemblies. Require qualified building-envelope, structural, roofing, window, door, and siding professionals where appropriate.

Reference standards

  • Approved wall, window, door, roof, deck, siding, drainage, and structural details; adopted state and local building and energy code; permit and inspection conditions; authority having jurisdiction requirements; signed scope; and exact flashing, membrane, sealant, fastener, cladding, window, door, and drainage manufacturer instructions
  • Approved roof-to-wall, kickout, step-flashing, ledger, deck, WRB, roofing, siding, and fastener details

    • Tools

  • Approved drawings, opening and product submittals, wall-section details, permit records, and authorized changes
  • Tape measure, level, flashlight, camera, and owner-safe ground-level observations
  • Dated pre-cover photographs and manufacturer-compatible material records showing drainage-plane continuity

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