Performance outcomes
By the end, you can:
- 1Explain shingle-fashion water management.
- 2Sequence roof and wall layers around openings.
- 3Inspect continuity before trim conceals it.
Working vocabulary
Name it precisely.
- Dry-in
- The stage at which roof and wall water-control layers substantially protect the interior from weather.
- Flashing
- Material arranged to direct water across transitions and back to the exterior.
- Shingle fashion
- Layering in which upper materials overlap lower materials so gravity directs water outward.
- Pan flashing
- A sill-level assembly designed to collect and drain incidental water at an opening.
01 · Instruction
Trace the water path
Before installing a product, draw where bulk water should travel at the roof edge, wall base and each opening. Every upper layer should deliver water onto a lower drainage layer that remains connected to the exterior.
02 · Instruction
Follow the selected product system
Use current instructions for roofing, underlayment, weather-resistive barrier, windows, doors, tapes and sealants. Compatibility and sequence matter; combining familiar parts from different systems can trap water.
03 · Instruction
Inspect before trim
Photograph the sill, jamb and head sequence; verify drainage exits remain open; and document roof-edge and wall-base laps. Correct reverse laps before siding or trim hides them.
Execution checklist
- ✓Bottom drains outward
- ✓Side layers lap the sill assembly
- ✓Head flashing laps over side layers
- ✓No unapproved blocked drainage paths
Concept diagram—not a construction drawing. Dimensions, connections and approvals come from the project documents and local authority.
Field assignment
Opening water-path mock-up
Build or diagram a layered rough opening following one selected manufacturer’s current instructions.
Evidence to capture
- Named product system
- Layer-by-layer sequence
- Water-path arrows
- Pre-trim inspection photos
Supervision rule: use qualified supervision whenever the assignment involves unfamiliar tools, energized equipment, structural work, excavation, work at height, or any condition outside your demonstrated competence.
Tool loadout
Tools earn their place by the operation.
Eye and hearing protection →
Baseline PPE for cutting and fastening operations.
Tape, square and marking tools →
Establish, transfer and verify dimensions before cutting.
Oscillating multi-tool →
Make precise opening and trim corrections.
Impact driver →
Install opening units and trim using the specified fasteners.
Tool links are a shopping convenience, not a requirement to buy. Equivalent equipment may be appropriate when it matches the operation, material, accessory, capacity, guard, and manufacturer instructions.
Mastery check
Prove you can make the call.
Answer all three questions. The passing standard is 80%, so this short check requires 3 of 3. Explanations appear after submission.