Building Envelope Solutions
Now accepting rebate applications
Building type
Homes, multifamily, commercial and industrial. One crew, one standard.
Brooklyn based
Insulation Contractor NYC: one envelope, every building
We insulate and air seal homes, apartment buildings, offices and warehouses with spray foam and blown-in insulation. Your building stays comfortable, uses less energy and passes inspection, and we file the utility incentive for you.
Who we serve
Pick your building. Everything below changes to match.
For homeowners
A warmer, quieter home, often paid for by your utility.
Cold bedrooms, drafty floors and street noise usually come from the same leaks. We seal and insulate them, mostly in a day or two, and handle the rebate paperwork.
- Attics and roofs: spray foam or blown-in, sealed at the edges.
- Closed walls: filled through small holes, then patched.
- Basements and crawl spaces: foam on the ceiling and rim joists, the fix for cold floors.
- Noise: Rockwool between floors and shared walls.
What is happening here. Blue is cold air getting in. Orange is heat getting out. Point at a part of the house, or pick one above, to see the fix.
Attic and roof. Warm air rises and leaks out at the top of the house. We air seal the edges and insulate with spray foam or blown-in, so the heat stays below.
Walls. Empty wall cavities let cold in and heat out. We fill closed walls through small holes, then patch the holes.
Basement and crawl space. Cold air gets in low, around the rim joists, and chills the floor above. We foam the basement ceiling and the rim joists.
Boiler. The boiler keeps making heat, and a leaky house keeps losing it through the roof and walls. Keep the heat in and the boiler has less to make up.
The whole envelope. With the attic, walls and basement sealed and insulated, cold air stays out and the heat you pay for stays in.
Incentive
Comfort Ready, new for 2027
The new Con Edison and National Grid program for one- to four-family homes. We are an approved contractor.
For owners, boards and managers
Lower fuel bills and fewer tenant complaints, building-wide.
Roofs, top floors and shafts lose the most heat in walk-ups, garden apartments and mid-rise buildings. We scope the whole property, work around tenants and line the job up with Con Edison or National Grid multifamily incentives.
- Attics and top floors: spray foam or blown-in across every building on the property.
- Air sealing: shafts, bulkheads and the gaps that drive drafts and smells.
- Between units: firestopping and soundproofing to code.
- One report for the board: scope, price and incentive in one document.
What is happening here. Blue is cold air getting in. Orange is heat getting out. Point at a part of the building, or pick one above, to see the fix.
Roof and top floor. Heat rises through every floor and leaks out at the roof, so the top floor is the hardest to keep comfortable. We insulate under the roof with spray foam or blown-in.
Walls. Uninsulated outside walls lose heat on every floor. We insulate them with spray foam or blown-in wherever the wall can be opened or filled.
Window air sealing. Gaps around the window frames let cold air in and heat out, apartment after apartment. We seal them so the drafts stop.
The whole envelope. With the roof, walls and windows sealed and insulated, cold air stays out and the heat the building pays for stays in.
Incentive
Con Edison multifamily program
For buildings with 5 or more apartments. National Grid has its own program for gas buildings. Type the address to see which one is yours.
For commercial buildings
Lower energy use, and a building that meets code.
Offices, stores, schools and houses of worship. We plan around your hours, meet the NYC energy code and fire code, and give your engineer or energy consultant the numbers they need.
- Roofs and decks: spray foam on roof decks and flat roofs.
- Walls and fit-outs: insulation that meets the NYC energy code.
- Air sealing: the gaps that drive heating and cooling bills.
- Also available: K-13 acoustic spray, fireproofing paint and firestopping.
Incentive
Con Edison and NYSERDA commercial programs
Programs change each year. We check which ones fit before we quote.
For industrial buildings
Big roofs, big spaces, done with our own spray rig.
Warehouses and plants lose energy through large roofs and walls and suffer from condensation. Our truck-mounted rig and long hose reach where smaller crews can't, so the work moves fast.
- Spray foam roofing: foam with a protective coating on flat and metal roofs.
- Metal buildings: walls and roof deck insulated against heat and condensation.
- Air sealing: dock doors, roof edges and wall joints sealed against drafts.
- Cold rooms and pipe areas: sealed and insulated.
Equipment
Our own spray rig
Our truck rig reaches roofs and upper floors without a crane.
In short
Insulation Builders is a Brooklyn insulation contractor at 3701 Bedford Ave, Brooklyn, NY 11229. We install spray foam, blown-in insulation and air sealing in homes, multifamily buildings, commercial buildings and industrial facilities across New York City and Long Island, and we file Con Edison, National Grid and NYSERDA incentives for our customers. Call or text (347) 200-5089.
Our work
Real jobs, photographed by our crew.
Drag the line to compare an attic before and after spray foam, then slide through more of our jobs.
BeforeAfterAttic roof deck, before and after spray foam.
1 Before
2 Cleaned out
3 Spray foam installed
Spray foam going in, rafter by rafter ![Crew member in a protective suit in a half-finished foamed attic]()
Full attic, sealed in one visit ![Closed-cell spray foam on a roof deck between rafters]()
Closed-cell foam on a roof deck ![Basement ceiling covered with open-cell spray foam]()
Basement ceiling, open-cell spray foam ![Garden apartment complex where the attics were insulated]()
Garden apartment complex, attic program ![Commercial ceiling with steel framing and insulation board, before finishing]()
Commercial ceiling before finishing
One attic in three steps, then more of our jobs. See the gallery
Reviews
What our customers say on Google.
5.0
★★★★★47 Google reviews
We highly recommend Insulation builders. Shai is knowledgeable, responsive and easy to work with. We had our walls insulated, our attic insulated and portions of our basement. They even found room in a crawl space to construct a new closet in our bedroom. Excellent experience all around.
They were professional, courteous, and did a great job insulating my attic. The job took about 2 hours, and they cleaned up very well afterwards.
Very nice team and Shai was super helpful in explaining exactly what I needed for the freezing pipe issue I had. They were clean, professional, and the job was done efficiently- also I shopped around and his price was very fair! I highly recommend!
Great team. Efficient, fair pricing and great communication. Would highly recommend.
Why us
One team for the whole building envelope.
Any
Always
A way to insulate
Hard-to-fill cavities are our job. Our team finds a way, with spray foam, blown-in or air sealing.
Own
Rigs and equipment
We own our rigs and all the equipment to finish any job, small or large.
5.0 ★
On Google
From 47 Google reviews, and every review answered.
Incentives and rebates
New York pays building owners to insulate. We make sure you collect.
Programs change every year, so we check your address and building type before we quote. The rebate shows on your quote, not as a surprise later.
Preview
Check your rebate
Enter your zip code and building type. We'll show which utility programs likely apply.
Building type
Likely programs
Type a 5-digit New York zip code to see your utilities.
An estimate from your zip code only. Programs change, so we confirm eligibility for your exact address before we quote.
Get a price with the rebateHave the address? Check the exact building: its gas utility, city records and programs.
National Grid
Homes and buildingsFor gas customers in Brooklyn, Queens and Staten Island.
Con Edison
Multifamily and commercialIncentives for buildings with 5 or more apartments, and for businesses.
NYSERDA
State programsExtra help for qualifying households and buildings.
Local Law 97
Buildings over 25,000 sq ftEnvelope work lowers energy use and emissions, which helps buildings stay under their limits.
New for 2027: Comfort Ready for 1-to-4 family homes and AMEEP for affordable buildings. See the 2027 programs
Instant estimate
What will my insulation cost?
Pick your building, the work and the size. You get a price range now, and we confirm it at a free visit.
Building type
Your price range
$1,800 to $2,400
Before any rebate. Most homes take one or two days.
Example for the building, work and size you picked. We'll confirm the price at a free visit.
How we work
Same four steps, from a brownstone to a warehouse.
You deal with one person from the first visit to the final incentive check.
Visit
We look at the roof, attic, walls and basement, and tell you plainly what will help.
One quote with the incentive on it
Price, scope and the expected rebate, before you decide.
Clean, scheduled work
Around your family, tenants or business hours. Areas sealed off and cleaned before we leave.
Paperwork filed
We submit the incentive and inspection documents and keep you posted until it's paid.
Services
What we install
Spray foam
Open and closed cell, for roofs, attics, walls and basements.
Spray foam roofing
Foam with a protective coating on flat and metal roofs.
Blown-in insulation
Cellulose and fiberglass for attics and closed walls.
Air sealing
The gaps that cause drafts, sealed and tested.
Basements and crawl spaces
Foam on ceilings and rim joists for warm floors.
Wall insulation
Closed walls filled through small holes, then patched.
Soundproofing
Rockwool between units and floors.
Firestopping
Fire-rated sealing for multifamily and commercial buildings.
Also offered: K-13 acoustic spray and intumescent fireproofing paint for commercial ceilings and steel.
Who we work with
Built for the people who run buildings.
Homeowners
A free visit, a clear price and the rebate filed for you.
Boards and property managers
Whole-building scopes, tenant notices and incentive paperwork.
General contractors
A reliable insulation and air sealing sub on your schedule.
Architects and engineers
Products and R-values that match your spec and the energy code.
Questions we hear
Do you work on large buildings and warehouses?
Yes. We work on homes, apartment buildings, commercial buildings and industrial sites across New York City and Long Island, with our own spray rig.
Spray foam or blown-in: which do I need?
It depends on the space. Spray foam seals and insulates in one step and suits roofs, rim joists and basements. Blown-in suits open attic floors and closed walls. We recommend one after the visit.
How long does a job take?
Most homes take a day or two. Larger buildings are scheduled in phases so tenants and staff can stay.
Will my utility pay part of the cost?
Often. National Grid, Con Edison and NYSERDA all have programs. Which one fits depends on your building and address, so we check before we quote.
Can tenants or staff stay in the building?
Usually yes. We schedule around them and close off only the area we're working in.
Does insulation help with Local Law 97?
Envelope work lowers how much energy a building uses, which lowers its emissions. Your energy consultant can show how much it counts for your building.