Open-Cell Spray Foam Insulation
Soft, quiet, and easy on the budget.
Open-cell spray foam is the light, flexible foam that expands to fill every gap, seals out drafts, and quiets your home, all at a more affordable price than closed-cell. We install it across Berkshire County and Western Massachusetts.
Built for Quiet & Comfort
R-3.7
Per inch, stable for the life of the home
3.5″
Creates a full air barrier
~100×
Expands to fill hard-to-reach gaps
$
More affordable than closed-cell
What Makes It Great
The strengths of open-cell foam
A soft, low-density foam that punches well above its price, especially where comfort, quiet, and full coverage matter most.
Soft & Flexible
Its low-density, spongy structure flexes with your home instead of cracking or going brittle over time.
Visco-Elastic
A pliable, open structure that absorbs movement and sound rather than transmitting it through the wall.
High Expansion
Expands up to about 100 times its volume, reaching into every crack, crevice, and hard-to-reach void.
Air Barrier at 3½″
At three and a half inches, it forms a continuous air seal that stops drafts and uncontrolled air leakage.
Excellent Soundproofing
Dense, open cells absorb sound waves, making rooms dramatically quieter than with standard insulation.
Affordable
It typically costs less than closed-cell foam, making whole-home coverage easier on the budget.
The Standout Strength
The quietest foam in the house
This is where open-cell truly shines. Its soft, porous structure absorbs sound waves far better than closed-cell foam or traditional insulation, so noise stops traveling between rooms and floors.
- Quieter bedrooms, offices, and media rooms
- Less noise transfer between floors
- A calmer, more peaceful home overall
Is Open-Cell Right For You?
When open-cell is the smart choice
Both foams air seal and insulate. Open-cell is often the better value in these situations.
Sound control matters
Between bedrooms, home theaters, offices, or floors where quiet is the goal.
Budget is a priority
You want full, effective coverage at a lower cost per board foot.
Interior walls & ceilings
Above-grade, protected spaces where moisture isn't a direct concern.
You have cavity depth
Deeper 2×6 walls and open attics give the foam room to hit your R-value.
Irregular, hard-to-reach areas
Its high expansion fills awkward cavities and voids other materials miss.
You want a breathable wall
It's vapor-permeable, letting assemblies dry where that's the right design.
Working below grade, in a basement, or somewhere moisture and water are a concern? That's a job for closed-cell spray foam. We'll always recommend the right foam for the space.
Where It Excels
Ideal applications
Open-cell is the go-to for interior comfort, quiet, and budget-friendly coverage.