Sebastian Spray Foam
Brookfield, CT · Serving CT & NY border

On schedule.
Spotless.
Since 2017.

Spray foam and insulation for homes and commercial projects across Connecticut and the Hudson Valley. Our crews arrive when we say they will, finish when we say they will, and leave your property cleaner than we found it.

  • Licensed CT & NY
  • $2M insured
  • 15 on the crew
  • In the trade since 2017
Since 2017Nine years in the trade
15On the crew, 4 rigs
CT & NYLicensed & insured
$2MInsured
What you can count on

The promises our customers repeat back to us.

We arrive when we said we would.

We do not reschedule.

We usually finish a day early.

We leave it cleaner than we found it.

Why it works

A home is only as comfortable as its weakest gap.

Most homes leak air constantly, through the attic, rim joists, and gaps inside finished walls. Batts and blown-in can't stop that airflow on their own. Spray foam expands to fill every gap and bonds into one continuous seal, so the air you paid to heat or cool actually stays inside.

Air, moisture, and heat sealed at the source
A thinner layer with a higher R-value
Structure that resists mold and stays put
Without a sealSealed envelope

58°

Cold, drafty rooms

70°

Even, all year

Illustrative, every home is assessed individually.

The First Congregational Church with an autumn harvest display in Litchfield, Connecticut
The payoff

Comfort you feel. A home that holds its temperature.

Warmer rooms the first night, steadier temperatures every season, cleaner and quieter air year-round.

Comfort

  • No more cold rooms
  • A quieter home

Savings

  • Lower bills, every season
  • Easier on your HVAC

Health

  • Cleaner indoor air
  • Mold protection
Framed wall cavities sealed with closed-cell spray foam, before drywall

Commercial & new construction, handled.

Warehouses, pole barns, metal buildings, and new builds, sealed on schedule for owners, builders, and GCs across CT & NY.

Open-cell spray foam on the underside of a roof deck, between the trusses
How it works

Three steps to a sealed home

No pressure, no mess, no surprises, just a straightforward path from drafty to done.

1

In-home assessment

We inspect your attic, walls, or crawl space and find exactly where your home is leaking energy.

2

A clear, fair quote

You get a straightforward plan and price, the right material for each space, no upsell.

3

Clean, expert install

Our expert crew seals the envelope, protects your home throughout, and leaves it spotless.

Why Sebastian

The crew your neighbors already recommend

Most of our work comes from referrals, the kind you only earn by showing up on time and leaving the house better than we found it.

In the trade since 2017

Nine years of experience, a Brookfield family business, not a call center.

Licensed & insured

CT HIC.0660083, licensed in Westchester & Putnam Counties NY, and insured to $2 million.

A crew, not a subcontractor

Fifteen people and four rigs, so the work is ours from start to finish.

Spotless job sites

We mask, protect, and leave it cleaner than we found it.

Real customer reviews

“Great work!! So happy with our attic!! Sebastian's team has all the proper equipment to ensure your home is safe and protected. They covered and lined all our walls and floors to make sure no fiberglass was left behind. Very professional and great quality spray foam technique.”

L

Leticia Holanda

Customer review

“Did a great job communicating, showed up on time, did great work and cleaned up after. Could not be happier. I would recommend them!”

T

Todd Gray

Customer review

“Was a pleasure from start to finish. I couldn't be happier with the spray foam in the attic. No more drafts and the upstairs is warm.”

N

Nicholas Zaffino

Customer review

Aerial view of the New Milford town green and steeples
Where we work

From the attic down to the crawl space

Attics
Roof decks
Cavity walls
Crawl spaces
Rim joists
Commercial
Questions, answered

What homeowners ask us most

How do you price a spray foam project?

Every home is different, so we give a no-obligation assessment and a clear price up front. The scope depends on the area, the foam type (open- or closed-cell), and the thickness your space needs. We are not the cheapest insulation contractor in the area, and we do not try to be. What you get is work that is specified correctly, installed by our own crew, and finished on schedule and spotless.

What's the difference between open-cell and closed-cell spray foam?

Open-cell foam is softer, expands more to fill gaps, and is excellent for soundproofing interior walls and roof decks. Closed-cell foam is denser, water-resistant, adds structural rigidity, and gives a higher R-value per inch, ideal for crawl spaces, rim joists, and tight rafters. We recommend the right one for each space during your assessment.

Do you serve my town?

We are based in Brookfield, CT and work across Fairfield, Litchfield and New Haven counties in Connecticut, plus Westchester, Putnam, Dutchess and Orange counties in New York. If you are nearby, call us.

Is spray foam insulation safe once it's installed?

Yes. Once cured, spray foam is inert and helps improve indoor air quality by sealing out dust, pollen, and outdoor pollutants. Our trained crews install it at the correct ratio and thickness, protect your home throughout, and clean up completely.

How long does a spray foam installation take?

Most residential attic or crawl-space jobs are completed in a single day. Larger whole-home or new-construction projects may take longer. We'll give you a clear timeline with your quote.

Will spray foam lower my energy bills?

Yes, by sealing the air leaks that let heated and cooled air escape, spray foam typically cuts heating and cooling costs noticeably and eases the strain on your HVAC system, extending its life.

Done properly the first time.

Request an estimate and we'll assess your home or building, specify the right material for each space, and give you a clear plan. On schedule, spotless, and finished when we said we would.

Call nowRequest an estimate