Basic
$3.20 – $6.41 per sq ft
Base sheet plus two fiberglass ply felts mopped in hot asphalt (3-ply), flood coat with embedded gravel, existing edge reused
How Much Does Tar And Gravel Roof Cost in Boise, Idaho?
Built-up (tar and gravel) roof: multiple plies of asphalt felt mopped with hot asphalt and topped with gravel on a flat or low-slope roof, per square foot of roof.
Tar And Gravel Roof in Boise, Idaho typically costs $3.77 to $7.54 per sq ft as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Tar And Gravel Roof in Boise, Idaho
$3.77 – $7.54
per sq ftPrices in Boise are 6.0% lower than the national average for tar and gravel roof.
National average: $4 – $8 per sq ft
What you get at each price level
Standard
$3.77 – $7.54 per sq ft
Base sheet plus three fiberglass ply felts in hot asphalt (4-ply), flood coat with embedded gravel, new gravel-stop edge metal
Premium
$4.71 – $9.43 per sq ft
Heavier base sheet plus three ply felts (4-ply), extra-heavy flood coat and gravel, new gravel stop, stripped-in flashings at curbs
Cost Breakdown in Boise
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $1.72 – $3.46 | sq ft |
| Labor | labor | $1.28 – $2.55 | sq ft |
| Supplies & Other | supplies | $0.46 – $0.92 | sq ft |
| Equipment & Disposal | equipment | $0.31 – $0.61 | sq ft |
Prices adjusted for Boise local market conditions.
Cost Factors in Boise, Idaho
What Affects Pricing
- Materials ($1.79-$3.60 per square foot)
- Labor ($1.41-$2.80 per square foot)
- Supplies & Other ($0.48-$0.96 per square foot)
- Equipment & Disposal ($0.32-$0.64 per square foot)
Local Price Adjustments
Material costs4.0% below avg
Labor costs9.0% below avg
Frequently Asked Questions
References
- Monarch Roofing: Things to know about a tar and gravel roof, monarchroofing.biz, retrieved Nov 2026
- The Roofing Brief: Flat roof types 2026, theroofingbrief.com, retrieved Nov 2026
- Construction wages by metro and rural area, used for the labor adjustment by ZIP code, U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025
- Regional price parities for goods, used for the materials adjustment by ZIP code, U.S. Bureau of Economic Analysis, 2024
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Connect with local tar and gravel roof contractors in Boise for personalized quotes based on your specific project.