Serving Ann Arbor & Washtenaw County
Not sure which insulation project you have?
Ann Arbor sits in IECC Climate Zone 5A, where code calls for a minimum of R-49 in attic assemblies — a level a lot of the area's older housing stock falls well short of. Most projects here fall into one of two categories: an attic-specific problem (uneven upstairs temps, ice dams, a knee-wall or cathedral ceiling that was never insulated correctly) or a whole-envelope problem (drafts, a cold floor over a crawl space, a rim joist that's never been sealed). This page helps you tell which one you have — and what it typically costs to fix.
Start here
Which one sounds like your house?
Ann Arbor's housing stock spans postwar ranches and cape cods in neighborhoods like Burns Park and the Old West Side, pre-1945 balloon-frame homes in Kerrytown, and newer builds further out toward Pittsfield Township. The construction era usually points to one of these two problems.
It's probably an attic problem
- Upstairs rooms are noticeably hotter or colder than downstairs
- You've seen ice dams along the eaves in winter
- You have a cape cod with knee-wall attic space, or a cathedral/vaulted ceiling
- Existing attic insulation looks thin, settled, or uneven
It's probably a whole-envelope problem
- You feel drafts at floor level or near baseboards
- Floors are cold over a basement or crawl space
- You're building new, doing an addition, or finishing a metal building/pole barn
- The rim joist (top of the foundation wall) has never been air-sealed
What it costs
Typical insulation pricing in Ann Arbor
Final pricing depends on access, square footage, and current insulation condition — confirmed with a free on-site evaluation. As a starting point:
| Job Type | Typical Cost | Notes |
|---|---|---|
| Open-cell spray foam | $1.00–$1.60 / board ft | Attics, cathedral ceilings, interior sound control |
| Closed-cell spray foam | $1.60–$2.60 / board ft | Rim joists, crawl space & basement walls, exterior applications |
| Combined attic + rim joist | $3,000–$6,500 | Most single-family Ann Arbor homes |
| Attic-only retrofit | $1,500–$4,000 | Depends on square footage and access |
DTE Energy and Consumers Energy both run home energy efficiency rebate programs that can apply to qualifying insulation work in Washtenaw County. Amounts change annually — we'll help confirm what's current during your estimate.
Every way we help in Ann Arbor
Beyond attic and spray foam
Crawl Space Encapsulation
Moisture control and air sealing beneath the home — common in Ann Arbor's older housing stock with unsealed dirt or vented crawl spaces.
Crawl space insulation →New Construction
Spray foam specified at the framing stage for builders working in Ann Arbor and Washtenaw County new-build projects.
New construction insulation →Energy Audits
A pre-work assessment that identifies exactly where a home is losing conditioned air before we quote the job.
Energy audit & evaluation →Existing Wall Insulation
Injection foam and drill-and-fill retrofits for older Ann Arbor homes with uninsulated wall cavities — no tear-out required.
Existing wall insulation →Commercial & Metal Buildings
Insulation for pole barns, warehouses, and commercial builds throughout Washtenaw County.
Metal building insulation →Soundproofing
Spray foam's air-sealing properties also cut sound transmission between floors and shared walls.
Soundproofing insulation →Ann Arbor project imagery
Real project visuals
See the gallery below, and more on each service-specific page.
Helpful planning links
Local context and project resources
For municipal permitting, use official City of Ann Arbor resources. For service-specific planning, use the detailed Seal Tech pages linked here.
Common questions
Ann Arbor insulation FAQs
How do I know if I need attic insulation or spray foam elsewhere?
If the problem is uneven upstairs temperatures, ice dams, or a cape cod/cathedral ceiling, start with the attic guide. If it's drafts, cold floors, a rim joist, or a new build, start with the spray foam guide. Many Ann Arbor homes need both over time.
How much does insulation cost in Ann Arbor, MI?
Open-cell foam runs $1.00–$1.60 per board foot and closed-cell runs $1.60–$2.60 per board foot. Most combined attic-and-rim-joist jobs land between $3,000 and $6,500; attic-only retrofits typically run $1,500–$4,000. We confirm exact pricing with a free on-site evaluation.
What climate zone is Ann Arbor in, and why does it matter?
Ann Arbor is in IECC Climate Zone 5A. Michigan's residential energy code calls for a minimum of R-49 in attic assemblies here — a level a lot of older fiberglass installations fall well short of.
Do you serve all of Washtenaw County, or just Ann Arbor?
We serve Ann Arbor and the surrounding Washtenaw County area as part of our broader Southeast Michigan service area.
Are there rebates available for insulation in Ann Arbor?
DTE Energy and Consumers Energy both run home energy efficiency rebate programs that can apply to qualifying insulation work. Rebate amounts change annually — we help confirm what's current during your estimate.
How do I request an Ann Arbor insulation estimate?
Call Seal Tech at (866) 775-3626 or use the contact form to request a free evaluation.
Start with a conversation
Not sure which page to click? Just call.
Tell us what you're noticing and we'll point you to the right fix.