Insulation Cost in Brentwood, NY in 2026
Most Insulation projects in Brentwood, NY cost between $1,700 and $7,000. The typical price is $3,300.
Labour and materials in Brentwood run about 24% above the national average. These figures are adjusted for that, so they are not the national average you will find elsewhere.
What drives the price
- Batt, blown-in cellulose or closed-cell spray foam
- Target R-value for your climate zone
- Attic, wall or crawlspace access
- Air sealing done alongside the insulation
Usually included
- Insulation material to the specified R-value
- Installation and air sealing at obvious gaps
- Cleanup and disposal
Usually extra
- Removing contaminated existing insulation
- Ventilation or moisture remediation
- Drywall work for wall injection
Unit prices in Brentwood, NY
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $1.39 |
| Mid-range | $2.79 |
| High-end | $5.80 |
Insulation contractors in Brentwood, NY
Businesses listed on Google near Brentwood, NY. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
New York Spray Foam Insulation
5.0(147 reviews)
68 E Jefryn Blvd #68g, Deer Park, NY 11729
WeatherFoam Insulation
5.0(87 reviews)
1054 NY-25A, Mt Sinai, NY 11766
Ivy Insulation
5.0(48 reviews)
7 Park Ave, Patchogue, NY 11772
Infinity Attic
4.7(58 reviews)
470 Suffolk Ave, Brentwood, NY 11717
Rocket Insulation
5.0(19 reviews)
40 Haynes Ct, Ronkonkoma, NY 11779
Sanchez Insulation Inc.
5.0(7 reviews)
1614 Manatuck Blvd, Bay Shore, NY 11706