Built Up Roof Cost: 2026 Installed Price Calculator
Mike Martin, MA CSL, is the founder and construction cost editor of RemodelingExpense. His residential construction experience informs the site’s cost research, calculators, and homeowner project guidance.
Built up roof cost ranges from $5.00 to $10.00 per sq. ft. installed, with most 1,500 sq. ft. built up roof replacements costing about $7,500 to $15,000.
This estimate is for built-up roofing, often called BUR, used on low-slope roofs, flat roof sections, additions, garages, porches, and small commercial-style roof areas. It is not for EPDM, TPO, PVC, modified bitumen, roll roofing, asphalt shingles, metal roofing, or tile roofing.
Enter your ZIP code and roof square footage below to estimate local material, labor, and installed cost.
Cost Calculator
Built Up Roof Cost Calculator
Built up roof cost depends on roof square footage, BUR layers, base sheet, ply sheets, hot asphalt or cold-applied adhesive, gravel or mineral cap surfacing, roof drains, scuppers, parapet walls, flashing, insulation, cover board, tear-off, recover versus replacement, odor, access, permits, and local labor rates.
Your estimated cost
For 1,500 sq. ft.
$7,500 – $15,000
About $5 – $10 per sq. ft.
Use your estimate as a starting point, then compare real prices from local contractors.
| Cost item | Low estimate | High estimate |
|---|---|---|
| Material | $3,000 | $6,000 |
| Labor | $4,500 | $9,000 |
| Estimated installed cost | $7,500 | $15,000 |
| Installed cost per sq. ft. | $5 | $10 |
Why your price may change
- Local labor rates vary.
- Material quality affects the price.
- Old material removal, repairs, permits, or code updates can add cost.
- Hard-to-reach areas, complex layouts, rush jobs, or premium contractors may cost more.
Estimate includes local labor adjustments and may differ slightly from rounded national cost examples.
Built Up Roof Cost vs Value
Built Up Roof may recover about 35%–55% of its cost.
Bottom line: A built up roof is a traditional multi-ply low-slope roofing system that uses layers of bitumen and reinforcing felts, making it a practical option for flat roof sections, garages, additions, and commercial-style roofs.
Worth it: Low-slope roofs where the owner wants a multi-ply asphalt-based roof system, gravel or mineral cap surfacing, strong redundancy, and a traditional BUR assembly.
Skip it: Roofs where odor, access, hot asphalt work, or added roof weight is a concern, or where EPDM, TPO, PVC, modified bitumen, roll roofing, shingles, or metal better match the project.
ROI ranges are planning estimates and should not be treated as an appraisal. This is only an estimate. Real resale value depends on your home, neighborhood, market, project quality, and buyer demand.
How to Measure Built Up Roof Area
Use roof square footage, not interior floor space. A low-slope roof, flat roof section, garage, addition, or porch may need more built-up roofing material than the building footprint once parapet walls, edge details, seams, drains, penetrations, and waste are included.
Built-up roof estimates should also account for the number of plies, base sheet, ply sheets, bitumen layers, gravel or mineral surfacing, insulation, cover board, flashing, roof drains, scuppers, edge metal, and whether the old roof must be removed.
Built Up Roof Cost Factors
Contractor Reality Check
A built-up roof is priced by more than roof area. A complete quote should explain the number of plies, hot asphalt or cold-applied adhesive, surfacing type, insulation, flashing, edge metal, roof drains, tear-off, disposal, access, and warranty coverage. Added layers, gravel surfacing, and hard-to-access roofs can raise the final price.
What to Confirm Before You Sign
- Number of built-up roof layers or plies
- Base sheet, ply sheets, and asphalt or adhesive method
- Gravel surfacing, mineral cap sheet, or other top surface
- Insulation, cover board, and roof deck condition
- Roof drains, scuppers, edge metal, and flashing details
- Parapet walls, skylights, pipes, HVAC curbs, and penetrations
- Recover versus full tear-off and disposal
- Odor, access, cleanup, material warranty, and labor warranty
Common Built Up Roof Add-On Costs
| Item | Typical Added Cost |
|---|---|
| Old roof tear-off and disposal | $1.50 – $4.00 per sq. ft. |
| Roof decking replacement | $70 – $150 per sheet |
| Rigid insulation or cover board | $1.50 – $5.00 per sq. ft. |
| Drain, scupper, or edge metal work | $500 – $3,500+ |
| Flashing around curbs or penetrations | $300 – $2,500+ |
Built Up Roof Cost by Type
| Built Up Roof Type | Installed Cost per Sq. Ft. | Best For |
|---|---|---|
| Basic built-up roof | $5.00 – $7.00 | Simple low-slope roof sections with limited penetrations and easy access |
| Gravel-surfaced built-up roof | $6.00 – $9.00 | Flat roof areas where added surface protection and traditional BUR construction are preferred |
| High-detail built-up roof | $8.00 – $10.00+ | Roofs with parapets, drains, curbs, skylights, insulation, or more flashing work |
Cost by Roof Size
| Roof Area | Estimated Installed Cost |
|---|---|
| 750 sq. ft. | $3,750 – $7,500 |
| 1,000 sq. ft. | $5,000 – $10,000 |
| 1,500 sq. ft. | $7,500 – $15,000 |
| 2,000 sq. ft. | $10,000 – $20,000 |
Is a Built Up Roof Worth It?
A built-up roof is usually worth it for low-slope roofs where a traditional multi-ply asphalt roof system makes sense. It can be a good fit for garages, additions, porches, flat roof sections, and small commercial-style roofs. It may not be worth it if odor, access, added roof weight, or hot asphalt work is a concern, or if EPDM, TPO, PVC, modified bitumen, roll roofing, shingles, or metal better matches the project.
Related Roofing Cost Guides
References
- GAF: Built-Up Roofing Systems
- CertainTeed Commercial Roofing
- GAF: How to Measure a Roof
- InterNACHI: Flat Roof Inspection
Last Updated: 6/19/26
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