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  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon40
    Verified insulation services reviews

Top-Rated Insulation pros in Saint Jacob - Updated Nov 2026

Avatar for Hawx Insulation-St. Louis
Hawx Insulation-St. Louis
4.1(
361
)
Blown-In Insulation - Install or Upgrade

Serving Saint Jacob, IL 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
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Saint Jacob, IL and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

Good Attic of Saint Louis removes old, dirty or pest-contaminated attic insulation and replaces it with fresh blown-in insulation to R-49 or R-60. Jobs can include air sealing, sanitizing after rodents, squirrels or raccoons, and attic ventilation fixes. We also top off attics that are simply under-insulated. We serve St. Louis and St. Charles counties, including St. Charles, St. Peters, O'Fallon, Chesterfield, Ballwin and Kirkwood. Free attic inspection with photos and a written scope, and same-week appointments.

Response time2 days
Response rate100%
84 neighbors recently requested a quote
Peterson Energy Consultants
3.9(
67
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Saint Jacob, IL and surrounding areas

In business since 1978

"He was very knowledgeable and professional. After the audit we received an estimate to correct any areas that were discovered. Unlike what we originally thought our issues were not the windows and doors. The estimate was for $4000 to add insulation to the attic, increase airflow in the attic, install foam insulation around our fireplace and throughout the basement as well as removing the attic fan and adding drywall. 
The price is the estimated price for projects to be completed.
"
Recommended by80%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 Saint Jacob, IL 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.   "
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+6

Recommended by89%of homeowners
Avatar for Gonz Insulation, LLC
Gonz Insulation, LLC
5.0(
2
)
Spray Foam Insulation - Install

Serving Saint Jacob, IL 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
Showing 1-10 of 37
Insulation FAQs, answered by experts

Yes, it is possible to have too much insulation, which can have detrimental effects. While more insulation might seem better for energy efficiency, a home needs to "breathe" or ventilate to release moisture that accumulates inside. Over-insulating can seal a house too tightly, trapping water vapor and leading to several problems, including mold, mildew, and condensation. Homes in warm, humid climates are particularly susceptible to mold, while those in colder climates can experience condensation from temperature fluctuations. Additionally, adding more insulation than the recommended amount for your climate may not provide recoverable energy savings. To avoid these issues, consult a professional insulation contractor who can determine the optimal amount of insulation for your home.

Heavily exceeding building code requirements for insulation not only wastes money on materials but can also lead to ventilation and moisture problems. In most cases, the minimum amount of insulation required by code is perfectly adequate.

Asbestos has many beneficial properties, including fire resistance, strength, and chemical resistance. It is also an excellent insulator, which is why it was used in pipe insulation and other building materials for decades. For all its benefits, asbestos is dangerous for human health, which is why it was eventually banned from use in certain products.

Insulation provides additional protection for your tankless water heater. Even if the unit is installed inside the house, it’s still a good idea to wrap the unit up with insulation batts, especially if you live in cold climates. For outdoor units, you can build an insulated box around the tankless water heater for freeze protection.

The life span of insulation is between 20 and 100 years. At that time, existing insulation can fall victim to gravity, resulting in compression, which reduces its insulating protection or R-value. If you can't simply add more insulation over the existing material, removing the old to increase the effectiveness of the new can reduce your energy bills and make the project worth the time and money investment.

The Saint Jacob, IL homeowners’ guide to insulation services

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