Spray Foam Insulation in Lansing, MI

Spray Foam Insulation Lansing seals and insulates homes in Lansing and the surrounding Capital Region, from century-old houses near Old Town to newer subdivisions in Holt and Okemos. If you are looking for spray foam insulation in Lansing because the upstairs is cold, the floors are freezing or the furnace never shuts off, the fix usually starts with finding where the air leaks out. We do that first, then insulate.

Why Lansing houses lose heat

Lansing's housing is old. About half of the city's homes were built before 1960, and roughly one in four went up in 1939 or earlier, according to 2019-2023 Census survey estimates. Those houses were framed with little or no wall insulation, balloon-framed walls that let air run from basement to attic, and rim joists that were never sealed. Many were insulated decades ago with a few inches of fiberglass or loose fill that has since settled. Add a January that averages about 24 degrees and roughly 50 inches of snow a season, and the gaps show up as ice dams, cold rooms and high bills.

Closed cell vs open cell foam

Closed-cell foam is dense and rigid. It adds roughly R-6 or more per inch, blocks air, resists moisture and stiffens what it sticks to, which makes it the usual choice for rim joists, basement walls, crawl space walls and steel buildings. Open-cell foam is softer and lighter, around R-3.5 to R-4 per inch, seals air well and costs less per inch, so it fits roof decks and interior walls where moisture is not a concern. We pick the foam for the surface, not the other way around, and on many attic floors we recommend sealing with foam and then blowing cellulose to depth.

What spray foam insulation costs

National cost guides put installed spray foam at about $1.50 to $5.00 per square foot, with open cell at the low end and closed cell at the high end (HomeGuide). A rim joist job often lands around $2,000 to $2,500, and an average attic insulation project runs about $1,000 to $2,700. Each service page has a full table with sources. Your price comes from measuring your house, and the written estimate is what you pay.

Choosing among spray foam insulation contractors

When you compare spray foam insulation companies or insulation contractors near you, ask each one the same questions. Will they inspect before quoting? Does the quote list the foam type, thickness and R-value for each area? How do they handle the attic hatch, can lights and bath fans? How long should you stay out of the house after spraying? What do they do about ignition and thermal barriers in garages and basements? We answer all of those in writing.

Codes and rebates in the Lansing area

Ingham, Eaton and Clinton counties sit in Climate Zone 5A. Michigan's residential energy code built on the 2015 IECC calls for R-38 ceilings and R-20 walls (or R-13 plus R-5 continuous) for new work in this zone, and ENERGY STAR suggests R-60 for an uninsulated attic here. A 2021-based update that would raise ceilings to R-60 was paused by the Michigan Court of Claims in July 2025, so ask your building department which edition applies to a permitted project. On the rebate side, Consumers Energy's insulation rebate chart lists amounts for attic, wall, basement, crawl space and rim joist work, and the Lansing Board of Water & Light lists insulation and air sealing rebates of up to $100 when performance standards are met. Programs change, so check before you sign. Get a free estimate

We work across the Lansing area: Lansing, East Lansing, Okemos, Haslett, Holt, Delta Township and Mason in the core, plus DeWitt, Bath Township and St. Johns to the north, Grand Ledge, Dimondale, Charlotte and Eaton Rapids to the west and south, Williamston to the east, and Laingsburg, Perry, Owosso and Portland further out.

The work changes with the town. Eaton Rapids, Owosso, Portland and Laingsburg have some of the oldest housing in the region, with a third or more of homes built before 1940, so wall cavities, stone or block foundations and old attic fill are common. Holt, Okemos and DeWitt are newer, with basements to finish and bonus rooms over garages. Rural Clinton and Eaton counties bring pole barns and shops. Each town page lists what we found about that town's housing and climate, with sources.