4.3 
17 *The Angi rating for Insulation Service companies in Festus, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in Festus, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on January 16, 2026
Serving Festus, MO and surrounding areas
Approved
In business since 2022
Free estimates
Emergency services offered
"Foam Co did an excellent job, very prompt, informative and priced competitively. Highly recommend!"
+15
Serving Festus, MO and surrounding areas
Approved (Corporate)
In business since 1928
Free estimates
Warranties offered
"This firm did a great job for me. They were very prompt did what they said they would do. Added insulation to the Attic to get up to R 49. They fixed a few baffles in the Attic as well. Cleaned up after themselves. The pricing was very competitive. No hassles or strong arm salesmen. I would strongly recommend them for blown in insulation work. Jason was very professional in his handling of this project."
+1
Serving Festus, MO and surrounding areas
Approved
In business since 2011
Free estimates
Emergency services offered
"Look no further if you need insulation. Very competitively priced ,showed up on time. Did a terrific job insulating my attic."
+25
Serving Festus, MO and surrounding areas
Approved
In business since 2015
Free estimates
Emergency services offered
"Did exactly what I asked them to do. No extra sales hassles, professional inspection, report, updates and installation. Great service and solution for the value. My attic is well insulated thanks to FOAM-CO."
+7
Serving Festus, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2023
Free estimates
Emergency services offered
"Excellent customer service thru the whole process and job was done 100% to our satisfaction. I would recommend any one to I Foam company for their insulation projects, thanks to the manager/owner and staff of I Foam.b"
+11
Serving Festus, MO and surrounding areas
Approved
In business since 2013
Free estimates
Credit card accepted
At Hawx Pest Control, our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. Hawx Premium Pest Control will treat your pests, mosquitos, and more- then keep them away for good. If pests come back between treatments so will we, at no additional cost to you. We welcome the opportunity to earn your trust and deliver you the best service. No job is too big or too small for our experienced team. Call today for a quote. \n
Serving Festus, MO and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Credit card accepted
"Thank you for your trust! At Local Air Duct Pros we specialize in professional air duct cleaning, dryer vent cleaning, chimney sweep, and attic insulation. Our licensed and insured team is committed to providing top-quality service at fair prices. We appreciate your support and look forward to serving you again!"
Serving Festus, MO and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
Carver Bro's Insulation 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.
Serving Festus, MO and surrounding areas
In business since 1988
Free estimates
Credit card accepted
"They were very professional and thorough. They helped us solve multiple issues with mice in attic, poor ventilation and not enough insulation. They replaced the fiberglass insulation with cellulose, air sealed the attic and properly vented the attic. They answered all our questions to our satisfaction and explained the process for the project in detail. Highly recommend!"
+17
Serving Festus, MO and surrounding areas
In business since 1977
Free estimates
Credit card accepted
"They done a excellent job."
From average costs to expert advice, get all the answers you need to get your job done.
New insulation makes your home more comfortable and boosts energy efficiency. Use this guide to budget for insulation installation costs in St. Louis, MO.
The cost of blown-in insulation in St. Louis, MO varies depending on the type of insulation, labor, prep work, and more. Learn more about the cost factors in this guide.
Insulating your attic can improve your home’s efficiency and reduce electric bills. Use this guide to find out what attic insulation will cost you in St. Louis, MO.
What is insulation? This behind-the-scenes home fixture will maintain comfortable temperatures in your home no matter the season. It’ll lower energy bills, to boot.
Use this DIY checklist for insulation repair to make your living space more comfortable and reduce your heating and cooling bills in the process.
There are 10 types of insulation you can use for your home. Read this guide to discover which insulation types could be best for the job.
