The Best Insulation Contractors in Johnson, VT

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

#1

ThermalGuard Insulation

4.8
(120 reviews)
Verified

A highly-rated, specialist insulation contractor serving Northern Vermont. They are known for their expertise in modern air sealing and spray foam applications, and they are often recommended for complex projects aimed at achieving high levels of energy efficiency. They work closely with Efficiency Vermont to help clients access rebates.

1125 Industrial Park Dr, Morrisville, VT 05661 (Serves Johnson and all of Lamoille County)

Specialties & Features

Spray foam insulation
Air sealing services
Energy efficiency audits

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#2

Green Mountain Insulation

4.6
(90 reviews)
Verified

A well-established, full-service insulation company known for reliability and quality work on both new construction and retrofit projects. They offer a wide range of insulation types, making them a versatile choice for attic upgrades, wall insulation, and basement projects. They have a strong reputation for customer service and clear communication.

45 Craftsbury Rd, Hyde Park, VT 05655 (Serves the Lamoille Valley region, including Johnson)

Specialties & Features

Blown-in insulation installation
Attic insulation installation and upgrade
Basement and crawl space insulation

Business Information

Years in Business:18 years
Licensed:Yes
Insured:Yes
#3

Northern Vermont Insulation & Air Sealing

4.5
(75 reviews)
Verified

This provider focuses on comprehensive home performance solutions. They emphasize the combination of insulation with advanced air sealing to maximize comfort and reduce heating costs, which is critical in Vermont's climate. They are particularly skilled in insulation removal and replacement in older homes.

202 Railroad St, St. Johnsbury, VT 05819 (Serves the Northeast Kingdom and extends into Lamoille County)

Specialties & Features

Insulation removal and replacement
Wall insulation services
Air sealing services

Business Information

Years in Business:9 years
Licensed:Yes
Insured:Yes

Why These Are the Top Insulation Contractors in Johnson

** The insulation market in Johnson, Vermont, and the surrounding Lamoille County is characterized by a small number of highly specialized, regional contractors rather than a high volume of local competition. The quality of service is generally very high, as contractors must be well-versed in Vermont's stringent building codes and the specific challenges of its cold climate. The influence of **Efficiency Vermont** is significant; most reputable contractors are partners with this program, which provides technical support, quality standards, and financial rebates to homeowners. This partnership acts as a de facto seal of approval. Competition is healthy but not saturated, leading to fair market pricing. Typical pricing is above the national average due to the high cost of materials, skilled labor, and the rigorous standards required. For example, attic air sealing and blown-in cellulose insulation for an average home can range from $2,500 to $4,500, while full spray foam applications can be a significant investment of $10,000 or more, often offset by substantial long-term energy savings and rebates. Homeowners are generally well-informed and seek out contractors with proven expertise in building science and energy efficiency.

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 Johnson regulations and climate

Frequently Asked Questions About Insulation in Johnson

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

1What is the most important type of insulation for my Johnson home given our local climate?

For Johnson's cold, humid winters with an average January low of 5°F, creating a continuous thermal and air barrier is critical. We prioritize air sealing and installing high R-value insulation in attics (often R-49 to R-60) and basement rim joists to prevent heat loss, ice dams, and moisture intrusion from the Lamoille River valley's humidity. Properly insulating your crawlspace or basement walls is also essential to protect against ground frost and reduce heating costs.

2How does the timing of insulation work in Johnson affect the project and cost?

The best time for major insulation upgrades in Johnson is typically late spring through early fall, as attics and crawlspaces are more accessible and comfortable for workers. Winter projects are possible but may incur weather-related delays and require interior work. Scheduling outside of the peak fall "winterization" rush can sometimes secure better pricing and faster scheduling from local contractors.

3Are there any local Vermont or Johnson-specific incentives for upgrading my home's insulation?

Yes, Vermonters have excellent access to incentives. Homeowners in Johnson should first explore the **Efficiency Vermont Home Performance with ENERGY STAR** program, which offers significant cash-back rebates for comprehensive insulation and air sealing work. Additionally, you may qualify for 0% financing through affiliated lenders and should check with your local utility, such as Vermont Electric Co-op or Washington Electric Co-op, for any additional offers.

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

Choose a contractor experienced with Vermont's climate and building styles, including older homes common in Johnson. Verify they are certified by the Building Performance Institute (BPI) and are an Efficiency Vermont Trade Ally, which ensures they understand proper air sealing techniques and rebate paperwork. Always ask for local references and proof of insurance, including workers' compensation.

5My house is drafty and has ice dams every winter. Will more attic insulation solve this?

Not by itself. Ice dams on Johnson homes are primarily caused by air leaks from the living space into the attic, which warms the roof deck. The solution is a two-step process: first, a professional must perform a **blower door-guided air sealing** of all penetrations (wires, pipes, lights) in the attic floor. *Then*, adequate levels of insulation (like cellulose or dense-pack fiberglass) are added on top to achieve the recommended R-value, which keeps the roof cold and prevents snow melt.