How much does spray foam insulation cost in Michigan in 2025?
For most Michigan homeowners, adding spray foam insulation is one of the most cost-effective ways to even out temperature differences and bring down your monthly energy bills.
But how much does spray foam insulation cost here in Michigan? And what should you expect based on your home’s size, layout, and existing insulation?
Let’s break it down:
This guide is designed to give you a general sense of pricing for spray foam insulation in Michigan. If you'd like a specific estimate tailored to your home - along with info on rebates and financing options - give us a call at (248) 291-7815. You can also send us a message anytime:
Based in Farmington Hills, we’ve helped more than 3,000 homeowners with insulation and other energy-saving projects since 2009. Price match and satisfaction guaranteed.
Average spray foam insulation costs in Michigan
In Michigan, homeowners can expect spray foam insulation to cost between $1.50 and $8.00 per square foot. The cost depends on where it’s installed, how accessible the area is, and how thick the foam is applied to achieve the desired R-value.
Cost breakdown for closed-cell spray foam based on project size
| Square Footage of Project Area | Estimated Cost (Closed-Cell Foam) |
|---|---|
| 1,000 sq ft | $2,500–$4,500 |
| 1,500 sq ft | $3,750–$6,750 |
| 2,000 sq ft | $5,000–$9,000 |
You may have noticed two things about the pricing information above:
First, we list costs in square feet. We did this to make the guide more user-friendly, but it’s worth knowing that spray foam is actually measured in board feet - one square foot at one inch thick.
In other words, pricing depends on how thick the foam is applied to reach the desired R-value. The estimates in this guide reflect the thickness needed to meet ENERGY STAR® recommendations for homes in Southeast Michigan.
Second, we only list closed-cell spray foam. At Ecotelligent Homes, we exclusively install closed-cell spray foam because it performs best in Michigan’s climate.
We don't recommend open-cell spray foam for Michigan homeowners because it's less efficient, not as strong, and most importantly - it's more prone to moisture absorption, which can lead to mold or rot in Michigan’s humid summers and snowy winters.
What affects spray foam insulation cost?
1. Type of foam
As noted, we only install closed-cell spray foam because of its higher R-value, moisture resistance, and long-term durability. It's also approved as a vapor barrier, which makes it a solid choice for Michigan homes.
2. Project size and shape
Larger areas cost more, but oddly shaped or hard-to-reach places can also drive up labor time and complexity. For example, insulating a spacious, wide-open attic is more straightforward than working around tight rim joists or narrow crawlspaces.
3. Thickness
The total cost depends on how thick the foam is applied to reach the desired R-value. The pricing listed in this guide reflects installations thick enough to meet ENERGY STAR® recommended R-values for homes in Southeast Michigan.
4. New construction vs. retrofit
Spray foam installation is fairly straightforward during new construction, which is why many builders include it from the start. But if you live in an older Michigan home, it’s a different story.
That’s where Ecotelligent Homes really shines. We've been serving Southeast Michigan since 2009 and specialize in retrofits. We’ve helped thousands of homeowners insulate old homes safely and effectively—without damaging plaster walls or historic features.
Cost by area of the home
Here’s what spray foam insulation typically costs in different areas of the home using closed-cell foam:
| Area | Estimated Cost |
|---|---|
| Attic Knee Walls | $1,800–$5,000 |
| Attic Roof Deck (Conditioned Attic) | $5,000–$20,000 |
| Basement Walls | $2,200–$6,000 |
| Crawl Space | $2,000–$4,500 |
| Rim Joist | $1,800–$2,500 |
| Pole Barn or Garage | $3,000–$10,000 |
These ranges reflect typical project sizes. Prices may be higher if old insulation needs to be removed or special prep is required.
DIY vs. professional spray foam installation
Is DIY spray foam right for you?
DIY spray foam kits typically cost $2.50–$3.50 per square foot.
Before you head to the hardware store, it’s worth noting that coverage can vary widely. Most kits don’t yield the full area they claim, and results depend heavily on the operator’s experience and surface preparation.
- Experience: Do you have experience with home improvement or HVAC projects?
- Gear: Do you have the right protective gear (respirator, Tyvek suit, gloves)?
- Tight spaces: Are you able to work in tight or awkward spaces like attics or crawlspaces?
Common DIY pitfalls include:
- Uneven application, leaving gaps and air leaks.
- Improper chemical mixing, which causes curing failures or off-gassing.
- Overspray damage to wiring, windows, or finished surfaces.
- Not reaching code-required R-values.
When it makes sense to hire a pro
For many Michigan homeowners, hiring a pro is the right move for peace of mind. This point is doubly true if you have:
- An older homes with existing insulation
- A project over 500 sq ft
Professionals have the equipment, ventilation controls, and expertise to apply foam properly and safely. Plus, a good contractor (cough) like Ecotelligent Homes (cough) backs their work with a warranty - and helps you qualify for rebates.
Got a project in mind?
How to lower your insulation cost in Michigan
Bundle services: Ecotelligent Homes offers air sealing, attic insulation, and crawlspace encapsulation. Bundling these can save you money and boost performance.
Check for rebates: Utilities like DTE and Consumers Energy offer cash-back rebates on qualifying projects. We’ll help you apply and get every dollar you deserve.
Schedule an energy audit: Our BPI-certified audits pinpoint the biggest sources of energy loss and make sure you’re investing in the right upgrades first.
Why choose Ecotelligent Homes?
Ecotelligent Homes is Southeast Michigan’s leading BPI-certified spray foam expert. Since 2009, we’ve completed over 3,000 energy efficiency upgrades and earned the Highest Customer Satisfaction Award from Consumers Energy.
We’re woman-owned and women-led, and we specialize in making older Michigan homes healthier, more comfortable, and more efficient. You’ll get:
- Transparent pricing and a price match guarantee.
- Proven solutions backed by science and experience.
- Personalized recommendations, not cookie-cutter fixes.
If you’d like help with your home, we’ve got you covered. Just call (248) 291-7815, or send us a message to get started:
Ecotelligent Homes
Since 2009, Ecotelligent Homes has completed more than 3,000 projects in Michigan. If you need help with new insulation, efficient HVAC, or abatement services, give us a call anytime: (248) 291-7815. Satisfaction guaranteed.
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