Insulation Cost in Herndon, VA in 2026
Most Insulation projects in Herndon, VA cost between $1,400 and $6,000. The typical price is $2,900.
Herndon prices track the national average closely. Costs here are close enough to the national picture that the adjustment barely moves the number.
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 Herndon, VA
| Quality tier | Cost per sq ft |
|---|---|
| Budget | $1.21 |
| Mid-range | $2.42 |
| High-end | $5.03 |
Insulation contractors in Herndon, VA
Businesses listed on Google near Herndon, VA. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Comfenergy
4.8(395 reviews)
45714 Oakbrook Ct #180, Sterling, VA 20166
The Fifth Fuel
4.9(327 reviews)
8521 Quarry Rd, Manassas, VA 20110
Founders Insulation
4.9(109 reviews)
4447 Brookfield Corporate Dr A, Chantilly, VA 20151
Seal Drywall Repair & Painting LLC
4.9(83 reviews)
11890 Sunrise Valley Dr Ste 444, Reston, VA 20191
Prudent Homes
4.9(59 reviews)
3012 Ps Business Center Dr, Woodbridge, VA 22192
Flex Drywall Repair
5.0(54 reviews)
250ReneauWay Apt, #1C, Herndon, VA 20170