Top-rated insulation pros.

Get matched with top insulation pros in Washington, MO

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Insulation pros in Washington

Avatar for Foam Co Insulation
Foam Co Insulation
5.0(
10
)

Serving Washington, MO and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"FoamCo recently insulated our basement walls. Before, we couldn’t use the basement in the winter time. We noticed an immediate difference once the insulation went in, and now our basement is our favorite cozy hangout spot in the house. They were great at explaining exactly what kind of insulation I needed and were actually the best priced bid we got."
Crew and Truck setting up Outside House
What a portion of the attic looked like after install.
Spray Foam
Additional Photos
Blown Fiberglass

+15

Response time2 days
Response rate93%
23 neighbors recently requested a quote
Avatar for Foam Co.
Foam Co.
5.0(
20
)

Serving Washington, MO and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"One of the best experiences we've had with work done in our home. Zac and the team from Foam Co went above and beyond for our project - removing the old insulation from our attic and installing new insulation. They arrived exactly at the agreed on time, took care to protect our home from any mess or damage, and completed the entire project in just a few short hours. All of the team members were polite and kind. They went above and beyond to clean up at the end of the project and to make sure we were satisfied with their work. We will absolutely hire them again in the future!"
Box Truck
Spray Foam w/ Scaffolding
Techs Spray Foam
Blow In Insulation
Fiberglass Blow

+7

Response time1 day
Response rate91%
17 neighbors recently requested a quote
Avatar for West County Insulation
West County Insulation
5.0(
6
)

Serving Washington, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Small jobs welcome

"The team at West County Insulation came out to remove and install new attic insulation for my home. Throughout the process they had quick communication and were always on top of the project. Recommend for anyone else to use."
Response time1 day
20 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for iFOAM Insulation of O'Fallon
iFOAM Insulation of O'Fallon
4.9(
8
)

Serving Washington, 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"
Spray Foam Insulation
Blown In Fiberglass Insulation
Bryan and Bret Brooks spraying a roof deck with closed cell spray foam.
The iFOAM of O'Fallon family making this home efficient.
Spray Foam Insulation
Spray Foam Insulation

+11

Response time6 hrs
17 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Good Attic, LLC
Good Attic, LLC
5.0(
5
)

Serving Washington, MO and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Good Attic is a trusted attic insulation and home comfort company serving homeowners throughout St. Charles and the greater St. Louis area. We specialize in blown-in insulation upgrades, air sealing, attic cleanouts, and ventilation improvements that solve hot/cold rooms, drafts, high energy bills, and poor airflow. Our team provides honest pricing, same-week appointments, and detailed before-and-after photos so you always know exactly what you’re getting. If you want a cleaner, more comfortable, and more energy-efficient home, Good Attic delivers results you can feel immediately.

Response time2 days
147 neighbors recently requested a quote
Avatar for Local Air Duct Pros
Local Air Duct Pros
4.5(
15
)

Serving Washington, MO and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"Local Air Duct Pros did an outstanding job! The team was professional, punctual, and very thorough. I noticed a huge difference in air quality right away. Highly recommended!"
Response time7 hrs
Response rate97%
19 neighbors recently requested a quote
Avatar for Siding Repair Systems
Siding Repair Systems
4.5(
128
)

Serving Washington, MO and surrounding areas

In business since 2009

Free estimates

Credit card accepted

"The BATH UPSTAIRS   had a window that needing bracing, a bath that had black mold behind the horrible VINYL wall, and had to be insulated with MOISTURE proof materials and RE-TILED - the walls, under the window and behind the tub and around the laundry chute opening.  The Downstairs Bath also needed the window braced and tiled as it was falling and splitting from the ceiling due to POOR WORKMANSHIP by someone NOT on Angies List back in 2003!!   SO, Siding Repair Systems -  They did it all, with their contractor Thomas Morton.  What a really fantastic job - on BOTH these Bathroom windows, Tiling and securing/supporting.  EXCELLENT WORK!!  Clean and neat - it looked like they had a MAID SERVICE come in and clean up after them.  Honestly.  So neat and clean they were.  Thanks for a Really good job.   "
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Recommended by89%of homeowners
Avatar for Gonz Insulation, LLC
Gonz Insulation, LLC
5.0(
2
)

Serving Washington, MO and surrounding areas

In business since 2019

Free estimates

Credit card accepted

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 the start to the 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.

Response time3 days
Recommended by100%of homeowners
Avatar for American Home Shield – Home Warranty
American Home Shield – Home Warranty
3.5(
5,688
)

Serving Washington, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+2

Recommended by65%of homeowners
Showing 1-10 of 34

FAQs for insulation service projects in Washington, MO

Local and federal rebates are available for insulation installation, which can significantly reduce your overall costs. Many utility companies offer incentives or rebates to homeowners who improve their home's energy efficiency. Contact your local energy provider or government agencies to learn about available programs in your area, and consult with a professional insulation installer to maximize your savings.

It's not necessary to remove old insulation before adding new insulation, as long as the existing insulation is in good condition—dry, free of mold, and not damaged. Adding new insulation on top of old insulation can improve your home's energy efficiency by increasing the overall R-value. However, if the old insulation is wet, moldy, or damaged, it's best to remove it before installing new insulation to prevent potential health risks and ensure optimal performance.

Insulating a house takes between five and twelve hours for batts or boards, and two to five hours for spray foam or blown-in insulation. The exact time depends on the size of your home, the type of insulation, and the accessibility of the areas being insulated. Keep in mind that projects may take longer if old insulation needs removal, if there's a larger square footage, or if spaces are difficult to reach.

The Washington, MO homeowners’ guide to insulation services

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

  • carpenter repairing the roof of a house

    Use this guide to budget for roof repair costs based on factors such as roof condition, materials, size, repair type and severity, and more.

  • fascia and soffits being replaced on roof of house

    Need fascia and soffit repairs? Hiring a pro ensures proper installation, protects against pests, and prevents structural damage. Learn about common warning signs, material options, and how fascia and soffits safeguard your home from moisture.

  • Two hvac systems

    Learn who to call for HVAC inspection. Discover which pro to hire, what to expect from an HVAC inspection, and average costs for your home.

  • new roof installed on house

    Our comprehensive cost guide will help you explore the costs associated with roof replacement, including roof pitch, shape, design, square footage, and more.