Get matched with top insulation pros in Washington, MO

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4.3

(19 reviews)

Top-rated insulation pros.

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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%
17 neighbors recently requested a quote
Avatar for Better Home Insulation
Better Home Insulation
4.5(
292
)

Serving Washington, 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. Thank you Liron and Better Home Insulation!"
1
2
3
4
5

+25

Response time1 day
Response rate98%
45 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%
15 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
18 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
14 neighbors recently requested a quote
Recommended by87%of homeowners
Hawx Insulation-St. Louis
4.1(
361
)

Serving Washington, 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

Recommended by75%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
127 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%
27 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 estimate and the people doing it was good. They knew what they were talking about and took their time. They said the work would start early February before they can start, which is fine its no rush. But we would appreciate if they could just give us a date. My wife has chased them down and they haven't gotten back to her. Just keep us in the loop, we shouldn't have to chase them down. We understand if the weather delayed or a set back. Its not hard to make a call or send an email."
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+6

Recommended by89%of homeowners
Showing 1-10 of 34
Insulation questions, answered by experts

To ensure safety during insulation service, schedule the work during the mild spring or fall seasons in Washington. This timing allows you to open windows for proper ventilation. Vacate the home completely during installation to avoid exposure to off-gassing and airborne particles. Relocate all pets outside the house entirely, as loose-fill materials irritate respiratory systems. Always request lead paint and asbestos testing for older properties before starting.

Helpful?

When hiring professionals for insulation service, verify they carry required general liability and workers' compensation insurance. Washington features hot, humid summers and cold winters, so your contractor must understand local moisture management and vapor barrier requirements. Many older homes in the area have knob-and-tube wiring or older materials. Ensure the contractor accounts for these conditions and addresses active radon mitigation compatibility before starting the project.

Helpful?

Several types of professionals handle insulation service across MO. Standalone contractors focus entirely on residential applications like blown-in or spray foam. Because of the mixed-humid climate, local HVAC professionals bundle air sealing and crawl space encapsulation with heating and cooling work. Weatherization specialists perform energy audits and upgrades. Additionally, specialized contractors focus specifically on basements and crawl spaces to address flood-adjacent environments near the river.

Helpful?

After completing your insulation service, schedule a final inspection to document code compliance. Request a blower door test to verify the effectiveness of the air sealing. Because Washington has elevated radon potential, test your indoor radon levels ninety days after the project finishes. Install humidity monitors in your attic and crawl spaces, and ask a professional to re-evaluate your heating and cooling load calculations for optimal efficiency.

Helpful?

Proper moisture management is the most critical factor for insulation service longevity in MO. Your contractor must install correct vapor barriers to prevent humid summer air from condensing and causing mold. In older homes, seal all air leaks around penetrations and rim joists before adding new materials. Maintain appropriate attic ventilation ratios, and use moisture-resistant materials in crawl spaces to protect against river flooding and high humidity.

Helpful?

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.