Somers is the newest town in Westchester County: the median housing unit was
built in 1980 and 49.9% of the stock postdates
it. It is also the most attached town on our list, and that second fact changes
the job. In more than a quarter of Somers, the attic above your ceiling is not
only yours.
The houses we insulate in Somers
Only 8.3% of Somers predates 1940 — with Yorktown, the
least pre-war place in the county — and 89.0% is
owner-occupied. But only 63.7% is detached, against 90.9%
single-unit once attached homes are counted, because 27.2% of the stock
is single-family attached. The decades run 18.5% in the 1970s, 16.9% in
the 1980s, 13.4% in the 1990s, 10.8% in the 2000s.
That share is not scattered. Most of it is Heritage Hills,
an age-restricted condominium community of 2,824 units with a
median build year of 1986. Here is what is in it.
In attached construction of this vintage the party wall very often stops at
the ceiling drywall instead of continuing up to the roof deck. Above the ceiling
you have one shared vented attic running over several units,
open across the top of every party wall, with each unit’s ducts and sometimes
its air handler sitting in it. Air, dust and heat move between homes. Sealing
one unit’s ceiling plane helps that unit, but the leak path along the shared
attic is common property, and the top plate you most need to seal is on the line
between you and your neighbor.
That makes it a different project with a different decision-maker. Doing the
attic plane properly across a shared attic takes unit-by-unit coordination and
association sign-off, and the sensible way to run it is as a row rather than one
owner at a time. We will tell you which parts you can authorize on your
own.
The detached side of Somers is more familiar: 1970s and 1980s colonials with
attic depth that is adequate on paper and an envelope that leaks everywhere
else. Open top plates over the second-floor partitions, wire and pipe chases,
dropped soffits, an unsealed knee door into the space over the garage, cathedral
great-room ceilings framed with no baffle and no air barrier, batts squashed
flat at the eaves. Seal that, baffle the eaves, then add depth.
We seal before we insulate
Insulation slows heat moving through a surface. It does nothing about air
moving through a gap. Pack a leaky attic with cellulose and you have a leaky
attic with cellulose in it — the air still moves, it just moves through
something softer.
In a Somers townhouse that has a second edge. Adding depth over one unit’s
ceiling while the party-wall top plates stay open leaves the shared attic doing
what it always did. The sealing is the work; the insulation is what goes back
afterwards. Then we insulate.
If a quote gives you a depth and never mentions air sealing, it is half a
job.
What insulation costs in Somers
Most of our projects run between $3,500 and $12,500. A
single townhouse attic sits near the bottom on square footage alone. What pushes
a Somers job up is access and coordination rather than material: a shared attic
scoped across several units, or a detached colonial with a cathedral great room
and a bonus room over the garage.
Worth knowing here: 28.7% of Somers heats with electricity,
the highest share in the county, and 48.0% burns fuel oil.
After air sealing and insulating, homeowners typically save 20% or more on
heating and cooling, and electric-heat households notice it on the next bill
rather than the next season.
Open cell foam runs R-3.9 to R-4.2 per inch. Closed cell runs R-6.9 to R-7.1
per inch and also acts as a vapor retarder, which is why it costs more and why
it is right in some assemblies and unnecessary in others. All products are
manufactured in the United States and meet applicable building code and safety
standards.
Insulation rebates in Somers
Check your electric bill before you plan anything. Somers sits on the
boundary between two electric utilities: part of the town is
NYSEG and the rest is Con Edison. Con Edison is
the gas utility either way, and with only 15.5% of Somers on
utility gas, much of the town is not on a gas main.
NYSEG customers can take up to $2,000 in
insulation and air sealing incentives, deducted directly from the cost of the
work rather than claimed back later. NYSEG accepts customers who heat with gas,
with oil, propane or another delivered fuel, and with heat pumps or electric
resistance. In a town that is 48.0% oil and 28.7% electric, that last part
matters more than anywhere else in Westchester: being off the gas main does not
disqualify you.
Con Edison customers have no weatherization program open at
the moment; Weather Ready is not accepting applications.
Either way, NYSERDA Comfort Home is live:
$2,500 to air seal and insulate the attic and rim joist,
$3,000 with wall and floor insulation added,
$2,000 more toward ENERGY STAR windows afterwards, contractor
on NYSERDA’s Comfort Home list. At or below 80% of area median income,
EmPower+ covers it at no cost up to $14,000
downstate, or half up to $7,000 at moderate incomes. See
the full New York rebate guide for the
mechanics.
The federal Section 25C tax credit ended for anything placed in service after
31 December 2025. There is no federal insulation credit on a
2026 job.
Code and climate in Somers
Being the newest town in the county buys less than it sounds. Half of Somers
still predates 1980, and the Heritage Hills condominiums went up around 1986 to
numbers no one would build to now. The current rulebook is the 2025
Energy Conservation Construction Code of New York State, in force since
31 December 2025 and based on the 2024 IECC. Westchester is
climate zone 4A.
For new construction and additions it sets R-49 in the
ceiling, R-30 in wood-framed walls (or R-20 plus R-5
continuous), R-30 in floors, and R-15 continuous or R-19 cavity in basement and
crawl space walls. Anyone quoting R-60 is quoting Connecticut’s code.
None of it applies to a house already standing. The code
expressly does not require an existing building to be altered, only that an
alteration not leave you with less than you had. The Department of Energy
separately recommends R-60 for a retrofit attic here, which is guidance, not
law.
Common questions about insulation in Somers
Do you install insulation in Somers, NY?
Yes, and in Somers we quote two kinds of work. One is the detached 1970s and
1980s colonial, a simple attic and envelope job. The other is attached
townhouse and condominium stock, more than a quarter of the town, which needs a
scope written around a shared attic.
How much does insulation cost in Somers?
Most projects run $3,500 to $12,500. A single townhouse attic sits near the
bottom because the footprint is small. A detached colonial with a cathedral
great room, a bonus room over the garage and ducts in the attic sits higher,
because the labor is in access and air sealing rather than in material.
Are there insulation rebates in Somers?
It depends which electric utility serves you, so check the bill. NYSEG
customers can take up to $2,000 in insulation and air sealing incentives
straight off the cost of the job, and NYSEG accepts oil, propane and electric
heat customers. Con Edison customers have no open weatherization program. Both
can use NYSERDA Comfort Home at $2,500 or $3,000, and EmPower+ if
income-qualified. No federal credit applies in 2026.
Our Somers condo shares an attic with the neighbors. Can that be done?
Yes, but it is a different project. Where the party wall stops at the ceiling
and one vented attic runs over several units, sealing your unit alone leaves the
main leak path open along the shared space. The work needs unit-by-unit
coordination and association sign-off, and is usually scoped as a row rather
than a single home.
Free energy audit in Somers
We walk the attic, check whether the party walls are closed above the
ceiling, look at where the ducts live, and give you a written scope and a price.
No charge, no obligation. If the job needs the association before it needs us,
we will say so.
Call 914-825-6824 or use the form on this page. Open
8am–8pm, seven days. We have insulated hundreds of homes across New York,
Connecticut and New Jersey with a 100-plus in-house crew, and we hold
manufacturer installer certifications from the spray foam manufacturers we
use.