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TRUSTED BY JEFFERSON CITY, MO HOMEOWNERS

  • Average homeowner rating star icon4.2
    Average homeowner rating
  • Verified reviews icon12
    Verified insulation services reviews

Top-Rated Insulation pros in Jefferson City - Updated Nov 2026

Avatar for Non-Stop Insulation LLC
Non-Stop Insulation LLC
New to Angi
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Jefferson City, MO and surrounding areas

Approved

In business since 2018

Free estimates

Non-stop Insulation, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers interests, and make their concerns the basis of our business.

1 neighbors recently requested a quote
Avatar for D & Z Spray Foam Insulation
D & Z Spray Foam Insulation
4.5(
12
)
Spray Foam Insulation - Install

Serving Jefferson City, MO and surrounding areas

In business since 2016

Free estimates

Credit card accepted

Welcome to D & Z Spray Foam Insulation! We have been proudly serving Missouri, and are excited to work with you! Contact us today, for quality service at an affordable rate. At D & Z Spray Foam Insulation, we treat your home as if it were our own. Call today!

Spray foam
Response time3 days
Recommended by91%of homeowners
Avatar for Siding Repair Systems
Siding Repair Systems
4.5(
128
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Jefferson City, MO and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"The fellows did a great job with this house.  The work is really quite excellent, and they kept us informed with how long it would take, how it was going, and could speak in understandable sentences.  They were polite and they worked very quickly.  
We were amazed and how quickly they did this job, as it was perfect and not at all sloppy, which you easily see in others who are quick and sloppy.  They were anything but.   They cut around several outlets and exterior items on the house and that was done well.  I would definitely recommend to anyone.  We also cannot believe how much WARMER THE BACK OF THE HOUSE is now - especially as it faces NORTH and was quite cold for the last 15 years.  We hope to be able to have them do the rest of the house as we like the insulation put in and the type and quality of siding that was used.  We would recommend most definitely."
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+6

Recommended by89%of homeowners
Mid Missouri Spray Foam
4.5(
9
)
Blown-In Insulation - Install or UpgradeInjection Insulation - InstallSpray Foam Insulation - Install

Serving Jefferson City, MO and surrounding areas

In business since 2022

Free estimates

Offers commercial services

"My experience insulating under my sun-room was so great. My room is much better both summer and winter. We use less heat during cold times. I hardly knew he was there while doing a perfect job. Good follow up."
Response time2 days
Recommended by100%of homeowners
Avatar for JW Building Solutions
JW Building Solutions
5.0(
4
)
Spray Foam Insulation - Install

Serving Jefferson City, MO and surrounding areas

In business since 2007

Free estimates

Credit card accepted

We take great pride in offering the best possible experience with our expertise, quality, and customer service. In order to understand the needs and expectations of our clients; we make every effort to work and communicate with everyone in a professional manner. It is our mission to exceed our clients expectations by providing excellent workmanship and complete customer satisfaction, from the start of each project to its completion. Our reputation is based on service, safety, and quality, regardless of how large or small the job. \n

Response time9 hrs
Recommended by100%of homeowners
Avatar for Paez Construction & Renovations, LLC
Paez Construction & Renovations, LLC
4.7(
3
)
Injection Insulation - InstallSpray Foam Insulation - Install

Serving Jefferson City, MO and surrounding areas

In business since 2023

Free estimates

Credit card accepted

RETROFOAM SEDALIA is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you! \n

Injection foam insulation
Injection foam insulation
Injection foam insulation
Injection foam insulation
Injection foam insulation

+20

Response time3 days
Recommended by66%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,689
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Jefferson City, MO and surrounding areas

In business since 1971

Credit card accepted

"Roberto was the technician and he was very professional, polite, and personable. He inspected the rest of our system and told us things that needed to be changed or repaired. He showed me pictures of everything. Everything he told me about was accurate. He quoted me a price for R38 insulation , Some of our ducts were plastic and he recommended them to be changed. I agreed completely and didn't know they were plastic. I would have had them done the work but I had no price comparisons to make and besides I didn't have the money right then. So he just finished the vent cleaning and left his card. He did a great job on the vent cleaning and was happy with the work."
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+2

Recommended by65%of homeowners
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Insulation FAQs, answered by experts

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

On it own, aluminum siding has a relatively low insulation value (also called R-value); aluminum siding has an R-value of 0.61. However, you can purchase insulated aluminum siding to increase the R-value to between 2 and 5. You can also install additional insulation within your walls to help maintain temperatures within your home. On average, insulation costs $1,825 to install throughout the typical home.

It is possible to insulate your walls without removing drywall, but it’s not a good idea to attempt the work yourself. A professional can use blown-in insulation or spray foam insulation to fill wall voids without opening up the walls, and the option they use typically depends on your climate and whether or not there’s insulation in your wall already that can remain in place. Spray foam insulation costs more and isn’t always a viable option, but it’s a better insulator. Call in an expert to help decide which is right for you.

The most affordable way to insulate behind unfinished walls is to install fiberglass batts or rolls. These total around $0.75 per linear foot, with the width matching the gaps between standard studs perfectly. However, it’s important to consider the R-value of your insulation and the climate in your area, as fiberglass insulation isn’t the best in terms of preventing heat transfer. Plus, the most affordable option may cost more on electricity bills over time. The most affordable way to insulate behind finished walls is to leave them up and use blown-in insulation to avoid drywall replacement.

The Jefferson City, MO homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.