The Best Insulation Contractors in Middlebury, VT

Compare the highest-rated insulation professionals in Middlebury, Vermont. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

Advanced Insulation Systems Inc.

4.8
(95 reviews)
Verified

A highly-rated, full-service insulation contractor serving Vermont, including the Middlebury area. They are a Building Performance Institute (BPI) Certified contracting firm, which underscores their expertise in whole-home energy efficiency, air sealing, and insulation. They are well-known for handling complex projects in both new construction and existing homes.

3349 US Route 7, Ferrisburgh, VT 05456 (Approx. 15 miles from Middlebury)

Specialties & Features

Spray foam insulation
Air sealing services
Energy efficiency audits

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

Weatherization Works

4.7
(80 reviews)
Verified

A dedicated energy efficiency and weatherization company that focuses on making homes more comfortable and affordable to heat. They are experts in dense-pack cellulose and blown-in insulation techniques, and they work closely with Efficiency Vermont programs to help homeowners access rebates and incentives.

4374 Roosevelt Hwy, Bristol, VT 05443 (Approx. 12 miles from Middlebury)

Specialties & Features

Blown-in insulation installation
Wall insulation services
Attic insulation installation and upgrade

Business Information

Years in Business:10 years
Licensed:Yes
Insured:Yes
#3

Vermont Foam Insulation

4.6
(70 reviews)
Verified

A specialized contractor focused primarily on spray foam applications for residential and commercial properties. They are a leading provider of closed-cell and open-cell spray foam in the state and serve the Middlebury area. Their expertise is ideal for maximizing R-value and creating airtight building envelopes in basements, crawl spaces, and roofs.

36 Creek Rd, Williston, VT 05495 (Approx. 35 miles from Middlebury, but serves the region)

Specialties & Features

Spray foam insulation
Basement and crawl space insulation
Insulation removal and replacement

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Middlebury

The insulation market in Middlebury, VT, is characterized by a high demand for energy efficiency upgrades, driven by Vermont's cold climate and the prevalence of older housing stock. The competition level is moderate, with a handful of highly specialized regional contractors dominating the market, as opposed to many smaller, general handyman services. The average quality of service is high, with leading contractors holding professional certifications from organizations like BPI and being recognized partners of Efficiency Vermont. This ensures work is performed to a high standard and often qualifies homeowners for significant rebates. Typical pricing is competitive but reflects the skilled labor and specialized equipment required; for example, spray foam insulation is a premium service costing several thousand dollars for an average attic, while blown-in cellulose or fiberglass is a more budget-friendly option. Air sealing is increasingly recognized as a critical first step before adding insulation.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Middlebury regulations and climate

Frequently Asked Questions About Insulation in Middlebury

Get answers to common questions about insulation services in Middlebury, Vermont.

1What are the most important insulation upgrades for my older Middlebury home to handle Vermont winters?

For historic or older homes in Middlebury, air sealing and adding attic insulation are the most critical first steps. Vermont's long, cold winters make heat loss through the ceiling a major issue. We typically recommend bringing attic insulation to at least R-49 (about 16-18 inches of blown-in cellulose or fiberglass) to meet modern energy codes for our climate zone. Addressing basement rim joists and wall cavities can be next, depending on your home's construction.

2How does the local Vermont climate affect the timing and scheduling of insulation projects?

In Middlebury, exterior projects like installing exterior rigid foam (continuous insulation) are best scheduled for late spring through early fall to avoid winter weather delays. However, interior work like attic or basement insulation can be done year-round. It's wise to schedule an assessment in the summer or early fall to secure a spot before the busy pre-winter rush when many homeowners seek to improve efficiency.

3Are there any local rebates or incentives in Addison County for improving home insulation?

Yes, Vermont has excellent incentives. The primary program is through Efficiency Vermont, which offers rebates for adding insulation to meet specified R-value targets. For example, they provide rebates per square foot for attic, wall, and basement insulation. Additionally, you may qualify for federal tax credits. A reputable local installer will be familiar with these programs and can help you complete the necessary paperwork.

4What should I look for when choosing an insulation contractor in the Middlebury area?

Look for a contractor with specific experience in Vermont's older home stock and climate. They should be certified by the Building Performance Institute (BPI) and familiar with Efficiency Vermont's program requirements. Ask for local references in Addison County and verify they carry proper insurance. A quality provider will always conduct a thorough energy audit or assessment before recommending a specific solution.

5My house feels drafty and has ice dams on the roof. Can insulation help, and what's the local approach?

Absolutely. Ice dams are a common Vermont problem caused by heat escaping from the attic, melting snow which then refreezes at the eaves. The solution isn't just more insulation; it's a combination of comprehensive air sealing in the attic floor (to stop warm, moist air from below) and bringing attic insulation to the proper R-49 level. This keeps the roof deck cold, preventing the melt-freeze cycle. Proper attic ventilation is also a key part of the strategy for our climate.