Flat Roof Replacement cost: Aliamanu / Salt Lakes / Foster Village vs Pearl City (2026)
There's essentially no price gap here: flat roof replacement runs close to $11,300 in both Aliamanu / Salt Lakes / Foster Village and Pearl City in 2026.
Aliamanu / Salt Lakes / Foster Village HI
Typically around $11,300
Pearl City HI
Typically around $11,300
Aliamanu / Salt Lakes / Foster Village vs Pearl City: full breakdown
| Factor | Aliamanu / Salt Lakes / Foster Village | Pearl City |
|---|---|---|
| Typical 2026 cost | $11,300 | $11,300 |
| Estimated range | $5,800–$16,800 | $5,800–$16,800 |
| Labor index (vs US) | ×1.08 | ×1.08 |
| Climate zone | Hot | Hot |
| Climate factor | ×1.02 | ×1.02 |
| Local permit | $325 | $325 |
| Labor share | $6,800 | $6,800 |
| Materials/equipment | $4,500 | $4,500 |
Flat roof replacement numbers here are 2026 planning ranges, adjusted per city — useful for budgeting, not a substitute for an actual quote.
No real cost edge either way
Neither metro has a cost edge on flat roof replacement — spend your decision-making energy on the contractor, not the location.
Flat roof replacement by type: Aliamanu / Salt Lakes / Foster Village vs Pearl City
We localize each flat roof replacement type separately for both metros, applying the same labor, climate and permit adjustments each time, so you're comparing like for like.
| Type | Aliamanu / Salt Lakes / Foster Village | Pearl City |
|---|---|---|
| EPDM (rubber) | $5,800–$13,500 | $5,800–$13,500 |
| TPO | $6,900–$14,600 | $6,900–$14,600 |
| PVC | $8,000–$16,800 | $8,000–$16,800 |
| Modified bitumen | $5,800–$12,400 | $5,800–$12,400 |
| Built-up roofing (BUR) | $7,450–$15,700 | $7,450–$15,700 |
Treat these as 2026 localized estimates for flat roof replacement, not quotes from a contractor.
Flat roof replacement by roof size: Aliamanu / Salt Lakes / Foster Village vs Pearl City
Flat and low-slope roofs are priced per square (100 sq ft) and run about $3–$11 per sq ft installed, depending on the membrane. The roof area is close to the footprint since there's little pitch.
| Size | Aliamanu / Salt Lakes / Foster Village | Pearl City |
|---|---|---|
| 1,000 sq ft (10 squares) | $4,700–$9,650 | $4,700–$9,650 |
| 1,500 sq ft (15 squares) | $5,800–$12,400 | $5,800–$12,400 |
| 2,000 sq ft (20 squares) | $6,900–$15,700 | $6,900–$15,700 |
| 2,500 sq ft (25 squares) | $8,550–$17,900 | $8,550–$17,900 |
| 3,000+ sq ft (30 squares) | $10,200–$21,200 | $10,200–$21,200 |
Treat these as 2026 localized estimates for flat roof replacement, not quotes from a contractor.
Cheapest time for flat roof replacement in either city
Shingles seal properly only in warm, dry conditions, which is exactly when everyone else wants a new roof too — especially right after a summer hailstorm. Lock in a late-fall or winter booking for a spring install and you skip that rush.
Where does a smart roofing budget go in 2026?
Tear-off vs. overlay, shingle tier and what's hidden under the deck decide the real number. Our editors on the trade-offs.
The risk case
Budget for the unknown: rotten decking found at tear-off is the most common surprise. Get the per-sheet repair rate in writing up front so a "cheap" bid doesn't balloon mid-job.
The do-it-right case
Pay for a full tear-off and quality underlayment, flashing and ventilation. An overlay saves money today but traps heat, voids some warranties and costs more at the next replacement.
The value case
Architectural shingles hit the sweet spot — far more durable than 3-tab for a modest premium, and far cheaper than metal or tile. For most homes they're the right default.
Full tear-off, architectural shingles and a written deck-repair rate protect you from the two big risks — hidden rot and warranty gaps. The lowest storm-season bid is rarely the cheapest over the roof's life.
Aliamanu / Salt Lakes / Foster Village vs Pearl City
Is flat roof replacement cheaper in Aliamanu / Salt Lakes / Foster Village or Pearl City?
Not really — both cities land at almost the same number for flat roof replacement, around $11,300 each.
Why does flat roof replacement cost more in Pearl City than Aliamanu / Salt Lakes / Foster Village?
Labor rates explain most of it — 1.08 in Pearl City vs 1.08 in Aliamanu / Salt Lakes / Foster Village. A hot climate versus hot accounts for the rest.
How much is flat roof replacement in Aliamanu / Salt Lakes / Foster Village, HI?
In Aliamanu / Salt Lakes / Foster Village, flat roof replacement typically runs $5,800–$16,800 in 2026, with most homeowners paying around $11,300.
When is the cheapest time to buy flat roof replacement — and does it differ by city?
It doesn't vary by location — Late spring to early fall (dry, 45–85°F) is the discount window in both Aliamanu / Salt Lakes / Foster Village and Pearl City (roughly 5–10% off), while mid-winter and the post-storm rush tends to be the most expensive in either city.
Should I choose where to live based on flat roof replacement cost?
No — the cost is essentially identical between Aliamanu / Salt Lakes / Foster Village and Pearl City. Base the decision on the things that actually vary: contractor reputation, scope, equipment tier and timing.
Compare flat roof replacement in other cities
Updated June 2026 · By Serhat Özçelik