Get matched with top insulation pros in O Fallon, MO

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4.6

(266 reviews)

Top-rated insulation pros.

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Find Insulation pros in O Fallon

Avatar for Aladdin Insulation of Missouri
Aladdin Insulation of Missouri
4.8(
44
)

Serving O Fallon, MO and surrounding areas

Approved (Corporate)

In business since 1928

Free estimates

Warranties offered

"Well, the was too much on the second floor but Aladdin solved that with blown insulation. I look forward to the cool savings in the summer and warm savings in the winter. The house has not added insulation since it’s manufacture in 1989. We have been here for 4 years. Should have done it four years ago. Thank you Aladdin!"
INSULATION
FOAM
BATTS
OUR BUSINESS
OUR BUSINESS!

+1

Response time1 day
Response rate89%
4 neighbors recently requested a quote
Avatar for Better Home Insulation
Better Home Insulation
4.5(
292
)

Serving O Fallon, 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 O Fallon, 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 O Fallon, 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 O Fallon, 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 O Fallon, 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 Carico Drywall & Insulation
Carico Drywall & Insulation
4.6(
21
)

Serving O Fallon, MO and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"I chose Carico Drywall because of his attention to detail, the fact he came out to give me an estimate, and the fact that he uses Union Drywall Installers. He was my 3rd bid in my buildout for my garage, and he was the highest bid by far. But the fact that he came to my house, met with me, explained and asked good genuine questions proved to me that he was the correct person to do the job. My garage is 1500sqft (30 ft deep , 50 ft wide) ceiling height is 18ft. At the peak, its roughly 22ft. I used R21 batting in the walls and 6 to 7 inches of open cell spray foam in the ceiling. The shop was drywalled with 5/16 inch drywall, no real need for anything thicker since the insulation keeps most sound dampened. I didnt tackle the drywall, because I felt like that would have taken me forever. Would i recommend Carico to do more projects? Yes I would."
Staircase
Master Bedroom
Living Room
Living Room
Church

+21

Response time2 days
Response rate86%
16 neighbors recently requested a quote
Avatar for Good Attic, LLC
Good Attic, LLC
5.0(
5
)

Serving O Fallon, 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
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Insulation questions, answered by experts

When hiring in O'Fallon, prioritize contractors familiar with local building codes and Missouri’s weather patterns. Ask about their experience with attic insulation, energy efficiency upgrades, and moisture control. Request written estimates, proof of insurance, and details on cleanup and disposal. Checking recent local references and ensuring clear communication about project timelines can help you choose the right pro.

Helpful?

In MO, upgrading insulation can impact your HVAC system’s workload, indoor air quality, and even plumbing in exterior walls. Improved insulation may change how your heating and cooling systems operate or affect attic ventilation. Insulation installed near electrical wiring or recessed lighting requires proper spacing. If you notice changes in airflow, humidity, or system efficiency, consult a qualified insulation specialist.

Helpful?

In O'Fallon, if you notice rooms that are hard to keep comfortable, cold floors in winter, or high energy bills despite recent insulation service, it may be time for a redo. Watch for musty odors, visible mold, or insulation that looks damp or compressed. Ice dams on your roof or attic insulation disturbed by pests are also common local signals that your insulation needs attention.

Helpful?

Homeowners in O'Fallon often overlook attic ventilation, leading to trapped moisture and reduced home efficiency. Using the wrong insulation type or R-value for Missouri’s climate, compressing insulation, or failing to seal air leaks before installation are frequent errors. Blocking soffit vents or placing insulation too close to recessed lighting can also create safety hazards and reduce performance.

Helpful?

In O'Fallon, you can address minor insulation issues by sealing small air leaks around windows and doors with caulk, or adding insulation sleeves to exposed pipes in unheated areas. Always wear protective gear and keep the area well-ventilated. If you encounter signs of moisture, mold, or rodent activity, or need to work near electrical components, it’s best to contact a local insulation professional.

Helpful?

The O Fallon, MO homeowners’ guide to insulation services

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