Assembly detail · Harrison, New York
Roof Flashing Plan
Inventory valleys, walls, chimneys, edges, and penetrations.
The Roof Flashing Plan proposal needs five separate entries, not one product label. The entries are eaves, rakes, and valleys; walls, dormers, and step flashing; chimney and masonry intersections; pipes, skylights, and curbs; existing metal reuse or reconstruction. Compare them before approving an order or installation date. Stay on the ground or in a safely accessible interior area. Roof access, destructive inspection, and installation belong with qualified people using proper protection.
Planning factors
Five decisions worth documenting
Use the headings as a proposal check. The actions beneath them are specific to this project decision.
Eaves, rakes, and valleys
List every eave, rake, valley, and drainage change on the roof plan. Ask which metal is new, which is retained, and what supports retaining an existing piece.
Walls, dormers, and step flashing
Wall and dormer intersections may need step flashing, counterflashing, and coordinated siding work. Identify who opens and restores the adjacent surface.
Chimney and masonry intersections
A chimney can involve roofing and masonry responsibilities. Agree on the flashing detail, masonry condition, and specialist handoff before either trade starts.
Pipes, skylights, and curbs
Inventory pipes, skylights, hatches, and equipment curbs by location. Each needs a compatible detail rather than one blanket line saying all penetrations are sealed.
Existing metal reuse or reconstruction
Request photos while the layers and connections are visible. Sealant on a finished joint is not evidence that the underlying water-shedding arrangement is correct.
Prepare the property
Keep these details on one sheet
- Eaves, rakes, and valleys
- Walls, dormers, and step flashing
- Chimney and masonry intersections
- Pipes, skylights, and curbs
- Existing metal reuse or reconstruction
Before authorizing work
What record belongs with “eaves, rakes, and valleys” before work begins?
Request a dated description and the evidence supporting the proposed treatment. Cross-check entries: walls, dormers, and step flashing; chimney and masonry intersections. Named responsibility: pipes, skylights, and curbs. Closeout file: existing metal reuse or reconstruction. Identity check for Roof Flashing Plan: confirm the business, applicable County license, roofing insurance, and current Harrison permit steps separately.