From $1.50/sq ft
Attic Spray Foam Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- Gable and ridge details closed properly for a chinook-country attic that freezes and thaws all winter
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Spray Foam Insulation in Rapid City SD | Attics & Basement Rim Joists
Fully Insured, in Rapid City and surrounding areas. Attic Spray Foam Insulation · Closed Cell Spray Foam Insulation · Open Cell Spray Foam Insulation.
Written Estimates with R-Value & Thickness Specs Fully Insured Free Quote 24h Locally Owned Serving Since 2012 Open Mon-Sat 7am-6pm in Rapid City and surrounding areas
+29Verified Reviews
14Years in Business
4.9 ★Google Rating
24/7Available
Your Free Quote Request
✅ No hidden fees💳 Cards accepted🛡️ Fully Insured✅ Written Estimates with R-Value & Thickness Specs
Our services
Our Spray Foam Insulation Services in Rapid City
All your work handled by qualified professionals in Rapid City
From $1.20/board ft
Closed Cell Spray Foam Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- Depth gauged at the wall because a thin pass fails the first hard freeze
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From $0.55/board ft
Open Cell Spray Foam Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- Shaved flush to the framing and the offcuts bagged out
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From $2/sq ft
Wall & Injection Foam Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- Every cavity probed for fill rather than assumed full
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From $2,500
Crawl Space Spray Foam Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- Full encapsulation referred out; the insulation is ours
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From $650
Rim Joist & Band Joist Spray Foam
Professional service with a free, no-obligation estimate.
Included in your service
- Sized so older poured and block basement walls can still dry
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From $1,200
Garage Spray Foam Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- The door header and slab edge addressed; not stepped over
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From $1.75/sq ft
Metal Building & Barndominium Spray Foam
Professional service with a free, no-obligation estimate.
Included in your service
- Post-frame girts and fastener lines sealed; not sprayed around
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Free commercial estimate
Commercial & New Construction Spray Foam
Professional service with a free, no-obligation estimate.
Included in your service
- Ignition and thermal barrier requirements settled up front
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From $950
Insulation Removal
Professional service with a free, no-obligation estimate.
Included in your service
- The usual first step on 1950s-70s North Rapid and Robbinsdale ranches
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From $2,800
Insulation Replacement & Re-Insulation
Professional service with a free, no-obligation estimate.
Included in your service
- One crew and one price with no handoff between trades
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From $650
Air Sealing
Professional service with a free, no-obligation estimate.
Included in your service
- Priced as its own job; never bundled in to pad a quote
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Get an Instant Ballpark Estimate
Pick the job, tell us roughly how much surface has to be covered, and see the range we actually work in. No email wall, no waiting.
Tell us the area to cover and we'll send your free written estimate →
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.
Simple Process
How It Works in Rapid City
1
Call or Request a Free Quote
Reach us by phone at (605) 519-6148 or fill out the estimate form. We get back to you within 24 hours, no commitment required.
2
We Assess On-Site
Our Spray Foam Insulation Contractor visits your property, evaluates the project, and provides a written quote before any work begins.
3
We Do the Work and Clean Up
Our crew completes the spray foam insulation and leaves your property clean and tidy. Full cleanup is included.
Why choose us?
Trusted spray foam insulation, air sealing, and insulation removal and replacement service in Rapid City
🏅
Insured contractors
Continuous training, professional equipment, meticulous and code-compliant work
🛡️
Fully Insured
Full coverage on all our job sites, no exceptions
⚡
Available Mon-Sat 7am-6pm
Emergencies, weekends, holidays: available when you need us
💰
100% Free Quote
Response within 24h, no commitment, by phone or form
+29
satisfied clients
4.9/5Google Rating
14Years in Business
Available Mon-Sat 7am-6pm
Service Areas
Service Areas: Rapid City and surrounding communities
We serve in Rapid City and surrounding areas · On-site visits included · Free estimate within 24h
📍 Rapid City 57701📍 Box Elder 57719📍 Spearfish 57783📍 Sturgis 57785📍 Deadwood 57732📍 Lead 57754📍 Belle Fourche 57717📍 Summerset 57718📍 Black Hawk 57718📍 Piedmont 57769📍 Rapid Valley 57703📍 Hill City 57745📍 Keystone 57751📍 Wall 57790📍 New Underwood 57761📍 Whitewood 57793📍 Johnson Siding 57702📍 Nemo 57759📍 Colonial Pine Hills 57702
✅ Written Estimates with R-Value & Thickness Specs
🛡️ Fully Insured
📅 Since 2012
⭐ 29+ reviews
About us
Your trusted service in Rapid City since 2012
Rapid City Spray Foam Insulation is a team of local, fully insured professionals based in Rapid City. We respond quickly in Rapid City and surrounding areas with professional equipment suited to every job.
Free estimate, transparent pricing, no subcontracting. Tell us about the space. We'll handle the rest.
📞 Call (605) 519-6148
Verified client reviews
29+ Verified Client Reviews in Rapid City
⭐⭐⭐⭐⭐ 4.9/5 · 29 verified Google reviews
⭐⭐⭐⭐⭐
EC
“We had our attic done about a month ago and the difference is night and day. The crew sealed up all the gaps around the ceiling joists and sprayed closed cell foam, took them maybe 6 hours start to finish. Our heating bills are already noticeably lower and the upstairs stays way more comfortable now.”
Attic Spray Foam Insulation
⭐⭐⭐⭐⭐
RS
“Called them out to do some air sealing in our hallway and interior walls where we were losing heat like crazy. They found leaks I didn't even know existed and sealed everything up tight with injection foam. Really professional crew, cleaned up after themselves completely.”
Air Sealing
⭐⭐⭐⭐
MJ
“Got our sloped ceiling in the upstairs bedroom done with open cell foam for better moisture management. The insulation job was solid and they made sure to protect all our belongings. Definitely feels warmer up there in winter now.”
Open Cell Spray Foam Insulation
⭐⭐⭐⭐⭐
CA
“We're remodeling our old wood-frame house and needed the walls insulated. These guys came in and did injection foam in the existing walls without tearing anything apart, saved us a ton of money compared to other options. Work was done in two days and the quality is excellent.”
Wall & Injection Foam Insulation
⭐⭐⭐⭐⭐
SH
“Turned our garage into a gym and needed it insulated properly. They sprayed closed cell foam on the walls and ceiling, the space is so much more comfortable now and I can actually work out in there year-round without freezing. Great job.”
Garage Spray Foam Insulation
⭐⭐⭐⭐⭐
SW
“Had our attic and knee wall spaces done with spray foam. The crew was careful around the access stairs and made sure everything was sealed tight. I'm impressed with how thorough they were, they even sealed around the rim joists while they were at it.”
Attic Spray Foam Insulation
⭐⭐⭐⭐⭐
RM
“We built a metal ag building in the mountains and needed it insulated. Rapid City Spray Foam came out and did a fantastic job with closed cell foam on the roof deck and walls. The building stays warm and dry, couldn't ask for better results on a rural project like this.”
Metal Building & Barndominium Spray Foam
⭐⭐⭐⭐⭐
MB
“New construction on our timber-frame home and we went with closed cell spray foam for the walls and roof. The team showed up on schedule, worked efficiently, and the insulation is perfectly applied throughout. Really happy with the energy performance already.”
Closed Cell Spray Foam Insulation
Before & after results
Our work in Rapid City: before & after results
Real photos of our work in Rapid City · Each image shows the final result achieved for our clients
Rates in Rapid City
Our Spray Foam Insulation Rates in Rapid City · 2026 Pricing Guide
Indicative estimates: your free personalized quote is always exact
Our Rates for Attic Spray Foam Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Open Cell Foam on Attic Floor | Starting at $1.50/sq ft |
| Closed Cell on Rim and Rafter Heel | Starting at $2.00/sq ft |
| Closed Cell on Roof Deck (Unvented Attic) | Starting at $3.00/sq ft |
| Hybrid Approach (Closed Cell Rim plus Open Cell Floor) | Starting at $2.25/sq ft |
| Insulation Removal (if required) | On estimate |
| Free Estimate and Site Visit | Free |
Our Rates for Closed Cell Spray Foam Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Rim and Band Joist Sealing | Starting at $1.20/board ft |
| Full Attic Spray (R-40) | Starting at $1.20/board ft |
| Metal Building or Unheated Garage | Starting at $1.20/board ft |
| Insulation Removal and Replacement | On estimate |
| Travel | Included |
| Estimate | Free |
Our Rates for Open Cell Spray Foam Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Open cell attic insulation | Starting at $0.55/board ft |
| Open cell sealed roof deck | Starting at $0.65/board ft |
| Open cell wall injection and rim joist foam | Starting at $0.60/board ft |
| Insulation removal and replacement | On estimate |
| Travel and setup | Included |
| Free written estimate | Free |
Our Rates for Wall & Injection Foam Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Closed-Cell Injection Foam | Starting at $3/linear foot |
| Open-Cell Injection Foam | Starting at $2/linear foot |
| Cavity-Fill Retrofit (Partial) | Starting at $2.50/linear foot |
| Full Wall or Rim Joist Injection | On estimate |
| Estimate | Free |
Our Rates for Crawl Space Spray Foam Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Rim and Band Joist Insulation Only | Starting at $2,500 |
| Full Crawl Space Insulation | Starting at $3,500 |
| Insulation Removal + Spray Foam | Starting at $4,500 |
| Large Crawl Space or Complex Geometry | On estimate |
| Travel | Included |
| Free Estimate | Free |
Our Rates for Rim Joist & Band Joist Spray Foam in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Rim Joist Insulation, Closed Cell 2 inch | Starting at $650 |
| Standard Basement Rim, 80 to 160 linear feet | Starting at $1,200 |
| Larger Rim or Rim Plus Wall Extension | Starting at $1,800 |
| Rim with Moisture Remediation or Prep | On estimate |
| Travel and Setup | Included |
| Free Estimate | No charge |
Our Rates for Garage Spray Foam Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Single-car garage, ceiling and rim joist sealing | Starting at $1,200 |
| Two-car garage, walls, ceiling, and complete air sealing | Starting at $1,800 |
| Three-car garage or larger, full insulation and air sealing | Starting at $2,500 |
| Metal building or post-frame garage | On estimate |
| Travel and service area | Included |
| Free written estimate | Free |
Our Rates for Metal Building & Barndominium Spray Foam in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Metal roof deck spray foam | Starting at $1.75/sq ft |
| Metal wall spray foam | Starting at $1.85/sq ft |
| Retrofit with insulation removal | On estimate |
| Full barndominium or complex project | On estimate |
| Travel and site visit | Included |
| Estimate | Free |
Our Rates for Commercial & New Construction Spray Foam in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Free commercial estimate | Free |
| Rim and band joist sealing (new construction) | Starting at $1,200 |
| Wall cavity injection (new or retrofit frame) | Starting at $2,500 |
| Metal roof deck or post-frame shop interior | On estimate |
| Travel | Included |
Our Rates for Insulation Removal in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Attic insulation removal (under 1,000 sq ft) | Starting at $950 |
| Larger attic or multi-zone removal (1,000 to 2,000 sq ft) | Starting at $1,400 |
| Crawl space insulation removal | Starting at $1,200 |
| Failed spray foam or complex removal | On estimate |
| Travel and setup | Included |
| Free estimate | No cost |
Our Rates for Insulation Replacement & Re-Insulation in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Attic insulation replacement (up to 1,200 sq ft) | Starting at $2,800 |
| Crawl space rim joist and band replacement | Starting at $3,200 |
| Wall injection foam retrofit (per 1,000 sq ft of wall) | Starting at $4,500 |
| Complex or large-scale replacement | On estimate |
| Travel and site visit | Included |
| Free estimate | No obligation |
Our Rates for Air Sealing in Rapid City
| Service / Criteria | Indicative Rate |
|---|---|
| Small air sealing project (rim joist, single penetration area) | Starting at $650 |
| Moderate air sealing (rim joist plus band joist, multiple penetrations) | Starting at $1,500 |
| Comprehensive air sealing (full basement rim, attic floor plane, all penetrations) | Starting at $2,500 |
| Complex or large-scale air sealing job | On estimate |
| Travel | Included |
| Free estimate | Free |
Indicative rates, actual cost varies with project size, materials, and site access. Free personalized estimate within 24h.
Free Quote
Get Your Free Quote
Spray Foam Insulation in Rapid City · Response within 24h · No commitment · ☎ (605) 519-6148
Your Free Quote Request
✅ Free personalized estimate ⚡ Response within 24h 🛡️ Fully Insured 📍 On-site visits included in Rapid City ✅ No hidden fees 🕐 Available Mon-Sat 7am-6pm
Frequently asked questions
Your questions about our services in Rapid City
How much does spray foam insulation cost in Rapid City?
Spray foam insulation costs vary based on the size of your project, foam type (open or closed cell), and application area. Rapid City Spray Foam Insulation provides written estimates that include R-value and thickness specifications so you know exactly what to expect. Call (605) 519-6148 for a free estimate tailored to your home or building.
Do you offer free estimates for spray foam insulation projects in Rapid City?
Yes, we provide free written estimates for all spray foam insulation and air sealing projects in Rapid City. Our estimates include detailed R-value and thickness specifications so you can make an informed decision about your insulation needs.
How quickly can you schedule spray foam insulation service in Rapid City?
We work to accommodate your timeline and can often schedule projects within days of your estimate. For urgent air sealing or insulation needs, contact us at (605) 519-6148 to discuss availability and emergency service options.
What areas of Rapid City do you service for spray foam insulation?
Rapid City Spray Foam Insulation serves the greater Rapid City area for all residential, commercial, and new construction spray foam projects. Whether you need attic insulation, crawl space sealing, or metal building applications, we're here to help your community stay energy efficient.
How do I find a reliable spray foam insulation contractor near me in Rapid City?
Look for a contractor with experience in multiple foam applications (open cell, closed cell, injection foam), clear pricing, written estimates with R-value specs, and proper insurance coverage. Rapid City Spray Foam Insulation offers all of these, plus expertise in attics, crawl spaces, garages, metal buildings, and commercial projects.
Are you fully insured for spray foam insulation work in Rapid City?
Yes, Rapid City Spray Foam Insulation is fully insured and qualified to handle residential, commercial, and new construction projects throughout Rapid City. We maintain liability coverage to protect your property during all insulation and air sealing work.
What is the difference between open cell and closed cell spray foam insulation?
Open cell foam is lighter, more affordable, and provides excellent sound dampening, making it ideal for interior walls and attics. Closed cell foam is denser, offers higher R-value per inch, provides better moisture resistance, and works well in crawl spaces, rim joists, and areas exposed to water. Our team can recommend the best option for your Rapid City home or building.
Should I have my old insulation removed before spray foam installation in Rapid City?
In many cases, yes. Removing old, damaged, or contaminated insulation allows for proper air sealing and ensures your spray foam bonds correctly to surfaces. Rapid City Spray Foam Insulation offers insulation removal and replacement services to prepare your attic, crawl space, or walls for optimal foam application.