Why Spray Foam
Why Spray Foam Outperforms Fiberglass in Minnesota
Our climate punishes leaky buildings. Spray foam is the only common insulation that seals and insulates in a single step.
Head to head
Spray foam vs. fiberglass
Air sealing
Spray Foam
Seals gaps completely — insulation and air barrier in one
Fiberglass
Air passes straight through the batt
Moisture resistance
Spray Foam
Closed-cell resists water and blocks condensation
Fiberglass
Absorbs moisture, then sags and loses value
R-value
Spray Foam
R-3.7/in open-cell, up to R-6.5/in closed-cell
Fiberglass
R-2.9 to R-3.8 per inch when perfectly installed
Comfort
Spray Foam
Even temperatures, no cold spots or drafts
Fiberglass
Cold corners, drafty rim joists, uneven rooms
Energy savings
Spray Foam
Largest reduction because leakage is eliminated
Fiberglass
Limited by uncontrolled air movement
Longevity
Spray Foam
Lifetime of the building, no settling
Fiberglass
Compresses and degrades over time
Pest resistance
Spray Foam
No nesting cavities, not a food source
Fiberglass
Common nesting material for rodents and insects
Noise reduction
Spray Foam
Open-cell dramatically dampens sound
Fiberglass
Modest sound absorption only
Open vs closed cell
Two foams, two jobs
Open-cell foam
Light, expansive and roughly R-3.7 per inch. It fills irregular cavities completely and is an outstanding sound absorber, which makes it the usual pick for attic roof decks, interior walls and cathedral ceilings where vapor control is handled elsewhere.
Closed-cell foam
Dense, rigid and up to R-6.5 per inch. It acts as its own vapor retarder, resists bulk water, and adds racking strength — the right material for rim joists, crawlspaces, basement walls, pole barns and metal buildings.
Benefits
Ten reasons homeowners upgrade
Lower heating costs
Stop conditioned air from escaping through gaps, seams and top plates.
Lower cooling costs
Keeps summer heat out of attics so your AC runs shorter cycles.
Air sealing
Insulation and air barrier in one application — no drafts.
Moisture control
Closed-cell foam blocks condensation on cold assemblies.
Better indoor air
Fewer pathways for pollen, exhaust and soil gases.
Less dust
A sealed envelope keeps airborne dust way down.
Noise reduction
Open-cell foam dampens road, wind and mechanical noise.
Long lifespan
Won't sag, settle or lose R-value over decades.
Higher home value
Documented efficiency upgrades appraise and sell well.
More comfortable home
Even temperatures floor to ceiling, room to room.
Ready to budget the project? Read the Minnesota spray foam insulation cost guide.
See what spray foam would do for your building
Free, no-pressure estimates across Central Minnesota. Most quotes returned within one business day.