Spray foam insulation and air sealing offer superior energy efficiency for Kansas City homes, whether you're insulating an attic, sealing a crawl space, retrofitting walls, or protecting rim joists. Pricing varies based on project scope, foam type (closed cell or open cell), square footage, accessibility, and existing conditions. We believe in transparent pricing so you understand exactly what you're investing in for better comfort and lower energy bills.
Pricing guide
These rates are indicative. Every job is unique: size, access, complexity. Request a free estimate for exact pricing tailored to your situation.
| Service | Price | Details |
|---|---|---|
| Attic Spray Foam Insulation | From $1.50/sq ft | Open-cell foam on the roof deck turns a Kansas City attic into conditioned space through July heat and January cold. The ductwork ends up inside the envelope. Every estimate lists the R-value target; the thickness per pass; the board footage. |
| Closed Cell Spray Foam Insulation | From $1.20/board ft | Two-pound closed-cell foam delivers R-6.5 per inch with its own vapor retarder and real structural stiffening. The right product for basement foundation walls; rim joists; metal buildings and any Kansas City wall where vapor drive flips direction between August and January. |
| Open Cell Spray Foam Insulation | From $0.55/board ft | Half-pound open-cell foam air-seals attics and walls at a friendlier price per board foot. Sound dampening between rooms and between the units of a Midtown fourplex comes with it. We spell out where it belongs, and where a basement wall calls for closed cell. |
| Wall & Injection Foam Insulation | From $2/sq ft | Injection foam fills closed walls through small drilled ports, no demolition. The retrofit answer for the frame upper stories of Kansas City shirtwaists; Waldo bungalows and post-war ranches with empty cavities. Solid stone and brick walls get an honest no. |
| Crawl Space Spray Foam Insulation | From $2,500 | Closed-cell foam on crawl space walls and subfloors ends cold January floors and damp August air. We foam crawl spaces under kitchen additions; sunrooms and enclosed back porches. Moisture problems get fixed first, we never spray over a wet crawl space. |
| Rim Joist & Band Joist Spray Foam | From $650 | Basement rim joists leak more cold air than almost anything in a Kansas City house. Closed cell seals every bay along the top of the foundation, the small-ticket job with the fastest comfort payback. Cantilevers and bonus-room floors are handled the same way. |
| Garage Spray Foam Insulation | From $1,200 | Garage ceilings under bonus rooms and walls shared with the house are foam-sealed against July heat and January cold. Workshop conversions are handled the same way. The difference between a storage box and usable space twelve months a year. |
| Metal Building & Barndominium Spray Foam | From $1.75/sq ft | Closed-cell foam stops a Missouri metal building from sweating in spring and frosting inside in winter. Shops; barndominiums; pole barns and ag buildings sealed against condensation from Cass and Clay County acreage to riverfront warehouses. |
| Commercial & New Construction Spray Foam | Free commercial estimate | Warehouses; offices; churches and production builders served on schedule. Code-compliant assemblies come with documentation your city or county inspector will actually accept. Phased work keeps your operation running from the West Bottoms to the Northland. |
| Insulation Removal | From $950 | Old blown-in and batts vacuumed out before any new foam goes in, never buried. We also cut out failed spray foam; the job most installers will not touch. Vermiculite is common in older Kansas City attics and gets flagged for testing; never disturbed. |
| Insulation Replacement & Re-Insulation | From $2,800 | The full reset: old material removed; gaps air-sealed; new foam installed to current code R-values. The right call when insulation is flattened; mouse-fouled; soaked by a hail-damaged roof, or when a new roof is going on anyway. |
| Air Sealing | From $650 | Top plates; can lights; chimney chases and attic hatches leak more heated and cooled air than most walls. We seal the leaks before insulating, the step that makes every R-value actually perform and the cheapest comfort fix in a Kansas City house. |
What Affects the Price
- Project Size and Square Footage : Larger areas typically have lower per-unit costs due to equipment setup and labor efficiency. A 500 sq ft attic will have different pricing than a 2,000 sq ft project.
- Foam Type (Closed Cell vs. Open Cell) : Closed cell foam provides superior R-value and moisture resistance, commanding a higher price per board foot. Open cell foam is more budget-friendly and works well for interior applications.
- Site Accessibility and Conditions : Easy-to-reach attics cost less than cramped crawl spaces or areas requiring extensive preparation. Existing insulation removal, structural damage, or difficult entry points increase labor time and cost.
- Air Sealing and Additional Work : Comprehensive air sealing around penetrations, ductwork, and rim joists adds value and cost. Combining services often provides better overall efficiency and may offer better pricing per project.
What's included
- Travel included across the Kansas City area
- Professional labor & equipment
- Old insulation vacuumed out, bagged & hauled away
- Job site cleanup
- Written estimate before work begins
To get an accurate estimate, have your square footage ready and be prepared to describe your space (attic access, crawl space height, wall cavity depth, etc.). Our team at Kansas City Spray Foam Insulation will discuss your goals, current insulation status, and any problem areas like drafts or moisture. Call us at (816) 307-2678 for a free, no-obligation estimate tailored to your specific project.
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Indicative ranges only. Final pricing depends on the thickness and R-value specified, what has to come out first, access, and whether open or closed cell is the right product. Measured on site at the board foot. Minimum job charges apply on small jobs.
Pricing FAQ
Why does spray foam insulation cost more than traditional fiberglass insulation?
Spray foam provides superior air sealing, higher R-value per inch, and long-term durability. It fills gaps and cavities completely, preventing air leaks that traditional insulation can't address. The initial investment typically pays for itself through energy savings within 3 to 7 years.
Do you offer free estimates, and how quickly can you schedule an appointment?
Yes, we provide free estimates for all residential projects. Call (816) 307-2678 to discuss your needs and schedule a time that works for you. We'll assess your space and provide a detailed quote with no pressure to commit.
What's included in your pricing, and are there any hidden costs?
Our quotes include labor, materials, equipment, and basic cleanup. We're transparent about what drives costs, and our team will explain any variables before work begins. Ask about your specific project when you call for a detailed breakdown.
Can I finance my spray foam insulation project?
Yes, we work with homeowners to explore financing options for larger projects. Discuss payment plans and financing availability when you call (816) 307-2678 to schedule your free estimate.
How much does air sealing cost, and can it be combined with insulation?
Air sealing starts at $650 and is often combined with spray foam insulation for maximum efficiency. Bundling services typically saves money compared to separate projects and delivers better overall performance.