How Much Does Flat Roof Installation Cost in Portland, OR?
Average flat roof installation costs in Portland range from $13,328 to $18,032. Get a free, customized estimate below.
Flat Roof Installation Cost Breakdown — Portland, OR
| Item | Unit | Qty | Unit Price | Total |
|---|---|---|---|---|
| EPDM / TPO Membrane | sq ft | 1200 | $6.32 | $7584.00 |
| Insulation Board | sq ft | 1200 | $3.22 | $3864.00 |
| Flashing & Edge Detail | linear ft | 80 | $13.80 | $1104.00 |
| Labor (full install) | hr | 32 | $97.75 | $3128.00 |
| Estimated Total | $15,680.00 | |||
* Prices are estimates based on Portland market rates. Actual costs may vary based on project specifics.
Estimate
Ref ID: EST-2026-HJY6
Date Issued
May 6, 2026
Client
Project Details
Site Address
Start Date
End Date
Scope of Work
Materials
| Material Specification | Units | Amount | Ext. Total | |
|---|---|---|---|---|
$ | $7,584 | |||
$ | $3,864 | |||
$ | $1,104 | |||
$ | $3,128 |
Labor
| Service Specification | Type | Hrs | Rate | Ext. Total | |
|---|---|---|---|---|---|
Craftsmanship Guarantee | $ | $600 |
Contractual Agreements & Conditions
Total
$16,280
Draft
Frequently Asked Questions — Flat Roof Installation in Portland
How much does flat roof installation cost in Portland, OR?
The average cost for flat roof installation in Portland, OR ranges from $13,328 to $18,032, depending on project scope, materials, and labor rates. Portland costs are above the national average due to higher labor and material costs in the region.
How do I get a free flat roof installation estimate in Portland?
Use Brixor's free online estimate generator above. Enter your project details, customize line items for your specific needs, and download a professional PDF estimate instantly. No signup or credit card required.
What factors affect flat roof installation costs in Portland?
Key factors include project size and complexity, material quality, labor rates in Portland (OR), permit requirements, accessibility of the work area, and seasonal demand. Getting multiple estimates is recommended.