Closed-cell spray foam is the dense, rigid type of spray foam. It is sprayed as a liquid, expands about 30 times, and cures into a hard foam that bonds tightly to wood, metal and concrete. At about R-6 to R-7 per inch, it delivers roughly twice the R-value of fiberglass batts in the same space, and it seals air at the same time.
Because its cells are closed, it does not soak up water. At about 1.5 inches it works as a vapor retarder, and it adds racking strength to walls and roof panels. That makes it the right material for places where moisture or space is the challenge, from crawl spaces and rim joists to cathedral ceilings and the metal shops found on so many Rogers County properties.
It costs more than open-cell foam or fiberglass, so we use it where it earns its price. Every free estimate shows where closed-cell goes, how thick, and the R-value you will get.
Claremore tip
Closed-cell foam cures best when sprayed in passes of roughly 1.5 to 2 inches. Ask how many passes your project needs if the plan calls for 3 inches or more.
Where Closed-Cell Foam Is the Best Choice
- ✓Crawl space walls and rim joists
- ✓Metal buildings, shops and pole barns
- ✓Cathedral ceilings and shallow rafters
- ✓Low-slope roof decks
- ✓Basement and below-grade walls
- ✓New construction walls that need maximum R-value
Closed-Cell vs Open-Cell Spray Foam
Open-cell foam is lighter, softer and more affordable, at about R-3.5 to R-3.8 per inch and roughly $0.45 to $0.80 per board foot. It is excellent on roof decks and in interior walls for sound control, but it absorbs water and is not used directly on metal.
Closed-cell foam runs about $1.00 to $2.00 per board foot, is about four times denser, resists water, and fits more R-value into tight spaces. Many Claremore homes use both: open-cell on the roof deck, closed-cell in the crawl space and on rim joists.
Closed-Cell Spray Foam Insulation Services We Offer
✓Crawl Spaces and Rim Joists
A water-resistant air seal where moisture is a constant issue.
✓Metal Buildings
Foam bonded to steel to stop condensation.
✓Cathedral Ceilings
More R-value in shallow rafter bays.
✓New Construction Walls
High-performance walls before drywall.
✓Barrier Coatings
Code-required coatings over exposed foam.
Closed-Cell Spray Foam Insulation Cost in Claremore, OK
| Project | Typical Range | What Affects It |
|---|---|---|
| Closed-cell foam per board foot | $1.00–$2.00 | Total volume and access |
| About 2 inches, per sq ft of surface | $2.00–$4.00 | Area and number of passes |
| About 3 inches, per sq ft of surface | $3.00–$6.00 | Area and number of passes |
| Rim joist sealing, typical home | $600–$1,800 | Perimeter and access |
A board foot is one square foot at one inch thick. Your free estimate lists thickness, area and price.
How It Works
- 1
Site Visit
We measure the space and check moisture levels.
- 2
Masking
Windows, floors and fixtures are covered.
- 3
Spray in Passes
Foam goes on in controlled passes to the planned depth.
- 4
Check and Cleanup
Depth and coverage are verified and the area is cleaned.