Build a flashing allowance from separate quantities instead of hiding every detail inside one generic number. Enter linear flashing plus chimney, vent and skylight unit costs from your local quote.
There is no single universal roof-flashing price per linear foot because walls, valleys, chimneys, skylights and pipe penetrations use different details and labor.
Enter only the items that apply. Set a quantity to 0 when that flashing type is not part of your project.
Some flashing is priced by linear foot, especially edge or continuous metal, while other details are priced by location or assembly. HomeGuide publishes drip-edge replacement around $1.50–$9 per linear foot, but that does not mean chimney, step or skylight flashing should be priced with the same unit.
| Flashing detail | Best planning unit | What to verify |
|---|---|---|
| Drip edge / continuous metal | Linear foot | Metal type, removal, fastening and fascia condition |
| Chimney flashing | Per chimney / assembly | Base, step and counterflashing; masonry cuts or sealant |
| Pipe / vent boot | Per penetration | Boot type and surrounding shingle repair |
| Skylight flashing | Per skylight / kit | Manufacturer kit, reuse vs replacement and adjacent roofing |
| Valley / wall flashing | Linear foot or scope item | System type and how it integrates with underlayment |
A small reseal or local repair should not be compared directly with removal and reconstruction of a full chimney or wall-flashing assembly. HomeGuide’s broad 2026 data places many minor repairs around $200–$500, while larger or complete replacement work can reach $500–$1,500 or more depending on location and complexity.
Flashing is a small percentage of roof area but a critical water-management detail. Keeping the quantities visible helps compare contractor scopes and makes it easier to understand why two bids with similar shingle prices may have different totals.
Cost references are based on HomeGuide’s 2026 roof flashing repair guide and its broader roof repair cost guide. Use exact local scope and unit prices for decisions.
It depends on the flashing type. HomeGuide publishes drip-edge replacement around $1.50 to $9 per linear foot, but chimney, wall, valley and skylight details are often priced by assembly rather than one universal linear-foot rate.
Published 2026 consumer guides show a wide range because resealing, partial repair and full replacement are different jobs. Use a per-chimney allowance from a written local quote in the calculator.
Minor vent flashing repairs are often a few hundred dollars, but access, roof type and surrounding shingle work matter. Enter the contractor’s per-boot or per-penetration price when available.
Some flashing may be reusable and some may need replacement. The contractor should identify the approach for walls, valleys, chimneys, skylights and penetrations rather than using one vague statement.
Drip edge is one type of edge flashing. Roof flashing also includes details at walls, valleys, chimneys, skylights and penetrations.