2026 project cost
Install Roof Flashing Cost
$668 to $917 for 100 linear ft, or about $6.68–$9.17 per linear ft. That covers 3 material line items and about 8 labor hours.
Estimate your install roof flashing project
Adjust the linear feet of flashing and state to re-price the job.
Estimated total
$668 – $917
materials + labor
What the materials cost
- Materials 15% · $135
- Labor 85% · $782
Quantities for 100 linear ft, including a 5% waste allowance.
| Material | Qty | Cost |
|---|---|---|
| 10-in x 50-ft Silver Aluminum Roll flashing | 2.1 EA | $78 – $110 |
| 501 10.1-oz Elastomeric Roof Sealant | 2.1 EA | $13 – $25 |
| 2-in Smooth Shank Electro-galvanized Roofing Nails 3817 -Per Box | 1.05 EA | $0 – $0 |
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How long it takes
- 1
Gather Materials & Prepare Roof 1-2 hours
Collect flashing, roofing nails, sealant, and safety gear. Inspect the roof in your area for damage and clean the installation area thoroughly.
- 2
Remove Shingles & Position Flashing 2 hours
Carefully lift or remove shingles around the area where flashing will be installed in your area. Dry-fit the flashing to ensure proper placement and coverage.
- 3
Install Flashing & Secure 2-3 hours
Slide flashing under shingles, nail it securely, and apply roofing sealant to all edges and nail heads. Replace or adjust shingles to cover the flashing in your area.
- 4
Inspect & Clean Up 1 hour
Check all seams and fasteners for watertightness, clean up debris, and ensure the work area in your area is safe and tidy.