Services
Insulation services for every part of the building
Lake State Insulation handles the whole building envelope: open and closed cell spray foam, air sealing and flash-and-batt, blown-in attic insulation, attic ventilation, insulation removal and wall insulation, for new construction and existing buildings.
- Spray foam is our specialty
- New construction and existing homes
- Barndominiums, shops and pole barns
- Every job seen in person before it's priced
Services
Every layer of the building envelope
Spray foam is our specialty, but a tight, comfortable building takes the right material in the right place. We do all of it.
Spray Foam Insulation
Open and closed cell foam that insulates, air seals and stops condensation in one pass.
Learn more about Spray Foam InsulationAir Sealing & Hybrid Systems
Flash-and-batt and targeted air sealing to hit Minnesota's 3 ACH50 blower door target.
Learn more about Air Sealing & Hybrid SystemsBlown-In Insulation
Deep, even loose-fill in attics and cavities, blown to R-49 and beyond.
Learn more about Blown-In InsulationAttic Insulation & Venting
Baffles, soffit-to-ridge airflow and full-depth insulation to stop ice dams.
Learn more about Attic Insulation & VentingInsulation Removal
Old, wet, rodent- or smoke-damaged insulation vacuumed out and hauled away.
Learn more about Insulation RemovalWall & Sidewall Insulation
New construction walls insulated right, and existing sidewalls filled without tearing out drywall.
Learn more about Wall & Sidewall Insulation
What are you building?
Insulation for the way Minnesota builds now
From steel-sided barndominiums on ten acres to lake homes and shops, we match the insulation system to the building, the code and how you'll use it.
Barndominiums & Post-Frame Homes
Closed-cell foam on steel stops condensation and meets the energy code for the living space.
New Custom Homes
Spray foam and hybrid systems built to pass the 3 ACH50 blower door the first time.
Shops, Pole Barns & Garages
Foamed roofs and walls that stay dry, hold heat and don't drip on your equipment.
Existing Homes
Attic top-ups, ventilation fixes, removal and sidewall insulation for the house you already have.
Open cell vs closed cell
Which spray foam does your project need?
Closed-cell foam is dense and rigid, with roughly twice the R-value per inch of open cell, and it doubles as a vapor retarder. It is the right call on steel-sided barndominiums and pole buildings, rim joists, and anywhere space is tight.
Open-cell foam is soft and expands to fill wood-framed walls and rooflines completely. It costs less per inch and quiets sound well, but in Minnesota it needs a separate vapor retarder.
Many new homes use both, or a flash-and-batt hybrid. We’ll recommend what fits each part of your building when we visit.
| Property | Open cell | Closed cell |
|---|---|---|
| R-value per inch | About 3.5 to 3.8 | About 6 to 7, depending on the product |
| Density | About 0.5 lb per cubic foot, soft | About 2 lb per cubic foot, rigid |
| Air barrier | Yes, at full depth | Yes |
| Vapor retarder | No, needs separate vapor control in Minnesota | Yes, at about 1 to 2 inches, depending on the product |
| On steel panels | Not recommended in our climate | The go-to for barndos and pole buildings |
| Adds strength | No | Yes, stiffens walls and roof decks |
| Best for | Wood-framed walls and rooflines, sound control | Metal buildings, rim joists, below grade, high-R thin walls |
Tell us about your project
Building a barndo, a custom home or a shop? Reach out and we'll set up a time to see it. No pressure, no guesswork pricing.