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Top-Rated Insulation pros in Knob Noster - 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 Knob Noster, 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.

Avatar for Devco Services LLC
Devco Services LLC
5.0(
6
)
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Knob Noster, MO and surrounding areas

Approved

In business since 2017

Warranties offered

Small jobs welcome

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Barn Restoration
Barn Restoration
Barn Restoration
Barn Restoration
Barn Restoration

+14

Response time1 day
20 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for D & Z Spray Foam Insulation
D & Z Spray Foam Insulation
4.5(
12
)
Spray Foam Insulation - Install

Serving Knob Noster, 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 Knob Noster, 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 Knob Noster, 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 Knob Noster, 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 Knob Noster, 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 Knob Noster, 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

Open-cell foam insulation has a life span ranging between 15 to 25 years when well cared for. However, the material may degrade sooner in areas with high humidity or after prolonged water exposure. Proper installation and maintenance can maximize its longevity but requires close monitoring. Closed-cell foam insulation has a longer life span of 30 to 50 years.

Yes, you can install insulation over ductwork, and doing so can save you money. Without insulation, the HVAC unit must work harder to force warm or cool air around the home, and once the air reaches the vent, it may not be the correct temperature. Insulating HVAC ducts makes your system work more efficiently, saving you money on heating and cooling bills.

The lifespan of cellulose insulation is 20 to 30 years, on average. That said, it’s important to start checking your insulation after year 10 to check for degradation, mold, mildew, and other potential problems. Every 10 years, you should also confirm your home’s insulation is in line with updated local building codes.

The time required for insulation installation can range from a few hours to a few days, with most projects taking 1-3 days to complete. The final duration depends on the project's size and complexity, the area size, and the type of insulation being installed.

The heat loss through a poorly insulated attic when you’re running your furnace or heat pump during cold weather can be as high as 25%. This means you could see significantly higher energy costs to make up for this heat loss. The cost of adding insulation to the attic may eventually pay for itself through lower energy bills. If you decide to add a radiant barrier too, the radiant barrier cost may also pay for itself over time.

The Knob Noster, MO homeowners’ guide to insulation services

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