Spray Foam Insulation cost: Medford vs Portland (2026)
In 2026, spray foam insulation is about 3% less expensive in Medford than in Portland. Most homeowners pay around $3,900 in Medford versus $4,000 in Portland — a gap of roughly $100.
Medford OR
Lower costTypically around $3,900
Portland OR
Typically around $4,000
Medford vs Portland: full breakdown
| Factor | Medford | Portland |
|---|---|---|
| Typical 2026 cost | $3,900 | $4,000 |
| Estimated range | $1,550–$6,200 | $1,600–$6,400 |
| Labor index (vs US) | ×1.03 | ×1.07 |
| Climate zone | Mixed | Mixed |
| Climate factor | ×1 | ×1 |
| Local permit | None | None |
| Labor share | $2,150 | $2,200 |
| Materials/equipment | $1,750 | $1,800 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
How much should this gap actually matter?
3% is within noise for spray foam insulation — contractor selection and timing move the price more than which of these two metros you're in.
Spray foam insulation by type: Medford vs Portland
Every spray foam insulation type gets its own localized price for each metro, using the same labor, climate and permit adjustments — a true apples-to-apples comparison.
| Type | Medford | Portland |
|---|---|---|
| Open-cell | $1,550–$4,650 | $1,600–$4,800 |
| Closed-cell | $2,600–$7,250 | $2,650–$7,450 |
Localized 2026 planning estimates — not quotes. Each city adjusts the national spray foam insulation range for local labor, climate and permits.
Spray foam insulation by area: Medford vs Portland
Spray foam is priced by board foot (1 sq ft at 1 inch thick), which works out to about $1.50–$5 per sq ft of surface installed depending on foam type and thickness. Closed-cell costs more but adds twice the R-value per inch.
| Size | Medford | Portland |
|---|---|---|
| 500 sq ft | $950–$2,500 | $950–$2,550 |
| 1,000 sq ft | $1,550–$4,150 | $1,600–$4,250 |
| 1,500 sq ft | $2,250–$5,700 | $2,350–$5,850 |
| 2,000+ sq ft | $2,900–$6,700 | $3,000–$6,950 |
Treat these as 2026 localized estimates for spray foam insulation, not quotes from a contractor.
What insulation pros earn in each metro
Roughly 55% of what you pay for spray foam insulation is labor, which is why local wages explain most of the price gap. The numbers below are actual metro wages for skilled installers, sourced from BLS OEWS — not guesses.
No BLS metro wage series for Medford; we use Oregon regional price parity instead.
Portland-Vancouver-Hillsboro metro · about 12% above the US average installer wage.
Source: U.S. Bureau of Labor Statistics, OEWS metro wages for HVAC installers (used as a trade-labor index).
Cheapest time for spray foam insulation in either city
The fall insulation rush drives prices up because everyone's thinking about the coming winter at once. Book in spring or summer instead, when demand is lower and rebate funds haven't been claimed yet.
How much insulation is worth paying for?
How much you spend on insulation and how fast it pays back come down to R-value, air-sealing and material. Our editors break down the trade-offs.
The R-value case
Aim for the R-value the DOE assigns your zone, not a round number that sounds close enough. Every point you fall short is comfort you don't feel and utility savings you never bank — savings that would have covered the extra material several times over.
The rebate case
Insulation has some of the best rebate math in home improvement — utility and state programs can cover a solid share (the federal 25C credits ended Dec 2025). Check DSIRE before you book and time it to a fresh rebate budget.
The air-sealing case
Skip air-sealing and you're insulating around the very holes letting conditioned air leak out. Caulk, foam and weatherstripping are inexpensive and often return more felt comfort than a thicker blanket of insulation ever would — insist the crew handles the leaks before they bury them.
Air-seal before you insulate, hit the DOE-recommended R-value for your zone, and claim every rebate you're eligible for — insulation is a rare case where doing the full job is also the cheapest one, long-term.
Medford vs Portland
Is spray foam insulation cheaper in Medford or Portland?
In 2026, spray foam insulation is cheaper in Medford at about $3,900, versus $4,000 in Portland — a difference of about $100 (3%).
Why does spray foam insulation cost more in Portland than Medford?
It comes down to labor: Portland indexes at 1.07 against Medford's 1.03. The mixed-vs-mixed climate difference adds to the gap.
How much is spray foam insulation in Medford, OR?
Medford homeowners can expect $1,550 to $6,200 for spray foam insulation in 2026, with $3,900 the typical number.
When is the cheapest time to buy spray foam insulation — and does it differ by city?
The best window is the same in both Medford and Portland: Spring and summer, when demand drops and installers discount to keep crews busy — typically 5–10% off peak pricing. The most expensive time anywhere is an emergency replacement during the pre-winter fall rush.
Should I choose where to live based on spray foam insulation cost?
Not really — the $100 gap is one-time, and smart timing and tighter quotes in Portland can shrink it. Factors that compound over time, like energy prices and home condition, deserve more weight than a single upfront difference.
Compare spray foam insulation in other cities
Updated June 2026 · By Serhat Özçelik