Eaves, rakes and drip edge
What a drip edge does at the eave and the rake, the code, roofing-maker and AFS limits behind it, how a crew sequences and laps the metal with underlayment and ice barrier, with worked examples, and how to inspect and fix the common defects.
4 lessons · about 53 min · 10 diagrams · 5 videos
Version 1.0.0
Builds on these modules
Lessons
0 of 4 complete
Lesson 1 · 14 min · 12 slides · 12 questions
Eaves, rakes and drip edge: principles and terminology
Why a roof edge needs metal, the parts of a drip edge and its L and T profiles, the shapes FlashDraft holds, where the code requires drip edge, and the safety boundary at the edge.
You will be able to: Tell an eave from a rake, name the parts and profiles of a drip edge, state where the 2018 IRC requires one, and state who installs it and the fall rules at the edge.
Not startedStart →Lesson 2 · 15 min · 12 slides · 13 questions
Eaves, rakes and drip edge: materials, standards and design constraints
The 2018 IRC minimums, editions and amendments, fastening and overhang rules by maker, edge metals, high-wind programmes, ice barriers, metal-panel and membrane-roof edges, and the AFS limits that shape a custom drip edge.
You will be able to: State the 2018 IRC drip edge minimums and why the edition matters, layer the shingle maker and any high-wind programme on top, pick an edge metal, and apply the AFS limits to an edge profile.
Not startedStart →Lesson 3 · 14 min · 12 slides · 12 questions
Eaves, rakes and drip edge: methods and worked application
The installation sequence on a shingle roof, the three published eave methods with an ice barrier, rake laps and the eave-rake corner, when to photograph, starter and overhang, and four worked examples.
You will be able to: Sequence eave metal, underlayment or ice barrier and rake metal on a gable roof, lap and nail it, and work out pieces, nails, rake length and face height with units and stated assumptions.
Not startedStart →Lesson 4 · 10 min · 12 slides · 7 questions
Eaves, rakes and drip edge: defects, verification and case study
An inspection checklist for eaves and rakes, correct and incorrect pairs, the recurring defects with their rules and fixes, a worked case of a leaking gable corner, and how to record the evidence.
You will be able to: Inspect eave and rake metal before it is covered, diagnose a plausible defect, name the rule it breaks with its source, choose a fix and document the evidence for review.
Not startedStart →
Practical task
Prepare a job packet for the eaves and rakes of one shingle roof (a real job, or a gable roof you are given): decide the rules that apply, sequence and size the metal, check it against the sources, and analyse one planted defect.
Hand in
- A decision rationale: roof covering, adopted code edition and amendments (ask the building department), the shingle maker's instructions, any high-wind programme, whether an ice barrier is required, and the eave method chosen, each with its source
- A marked-up section at the eave and at the rake showing the layer order: deck, underlayment or ice barrier, drip edge, starter and shingles
- Measurements and assumptions: eave and rake runs, pitch and slope factor, pieces and laps, the last piece, nail spacing chosen and why, profile and face height against the sheathing
- A quality checklist completed for each eave and rake, with photographs of each corner before the shingles cover it
- A defect analysis of one planted defect: what was found, the rule it breaks and whose rule it is, the fix, and the check that proved it
Rubric
| Criterion | Meets the standard when |
|---|---|
| Sources | Every value names its owner: the code and edition, the shingle or membrane maker, a programme, or an AFS register. |
| Layer order | Eave: metal on the deck and underlayment over it, or a named maker method agreed with the inspector. Rake: metal over the underlayment. |
| Laps and corner | Laps meet the 2 in minimum or the job's larger value; rake laps run upper over lower; the rake bottom passes the eave metal. |
| Fastening | Spacing is within the 12 in maximum and the maker's closer value where it applies; nails are high in the flange, none in the face. |
| Measurements | Pieces, last piece, nail count and rake length are worked with units; the face is checked against the sheathing. |
| Defect analysis | The defect is documented with a photo and measurement, the rule, the fix and the verification. |
| Safety | The packet states the fall protection the employer's plan provides for edge work and how the ladder is set. |