Attic Insulation Your Comfort is Our Main Priority

We are Building Performance certified and offer a holistic approach to helping you maximize your home’s efficiency as affordably as possible.

St. Louis Attic Insulation

Helping You and Your Family Stay Warm This Winter

In many homes, the attic is the primary area responsible for air leakage, disrupting the overall comfort of homeowners and their families. When an attic isn't insulated properly (or at all), you can expect a freezing cold home with an unusually high utility bill.

At Building Envelope Experts, we offer attic insulation and air sealing services in St. Louis to properly seal your home's attic. Our goal is to help you reduce wasted energy costs and improve the overall comfort of your home.

Why Is My House So Cold in the Winter?

This could be due to what's known as the stack effect: when conditioned air rises and leaks out of the home from unsealed gaps and into the attic. As a result, negative pressure is created in the basement, which then acts like a vacuum, sucking in unconditioned air from outside. During the winter, this causes cold air to be drawn into the basement. 

The stack effect is a significant problem for homeowners, not only because it disrupts the comfort of the home, but also because their heating and air conditioning bills increase as the HVAC system must work harder to compensate for the air leaks.

In order to reduce the amount of air leakage from your home, it is critical to first address the root of the problem—air leaks into the attic. For help, hire our team for professional attic insulation in St. Louis!

Benefits of Attic Insulation

Adding new insulation to your home has a variety of short-term and long-term benefits. 

Some of the key benefits of attic sealing and insulation include:

  • Increasing resale value
  • Energy bill savings
  • Improved airflow
  • No maintenance
  • “The product they deliver is top-notch and the installation is precise. Wonderful people to work with. We’ve had them at our home twice already and plan to use them exclusively for all of our remaining window replacements.”

    Matthew F.
  • “Building Envelope Experts did an outstanding job with insulation in our attic and window replacement for our entire house. The crew was courteous and knowledgeable. They kept a clean work area and got the job done on time.”

    Steve J.
  • “Replaced 2 windows with one awning window. Looks amazing inside and out. They were in and out including cleanup in a flash. Highly recommend.”

    Daniel Z.
  • “Excellent quality. Expert installers. Competitive prices.”

    Mark H.
  • “Not only have our heating needs gone down significantly, but our house is so much quieter now. My kids woke up during every thunderstorm for years and now sleep through them all!”

    Meg C.

About Our St. Louis Insulation Services

Blown-In Insulation

Just like it sounds, blown-in insulation is a method of attic insulation that is blown into uninsulated spaces through a long hose. Consisting of cellulose, blown-in insulation slows the airflow of conditioned air leaving your home.

TruSoft Cellulose Insulation

Cellulose is an insulation material manufactured from wood or paper with an easily moldable consistency. 

Some of its benefits include:

  • Fire retardant
  • Pest retardant
  • Eco-friendly
  • Slows down air better than fiberglass
  • Higher R-value per inch than fiberglass

Building Envelope Experts uses TruSoft cellulose insulation, a proprietary brand of premium cellulose exclusive to licensed contractors in the St. Louis area.

Duct Sealing

Between 20 and 30% of the air moving through your HVAC system is lost due to insufficient duct sealing. Properly sealing the air ducts in your home reduces the amount of air lost through leaks, leading to lower energy costs and a more comfortable home. 

Additionally, sealed duct systems may help improve indoor air quality and reduce the number of allergens, chemicals, and other harmful air particles in your home. 

On top of all this, it can also protect your HVAC equipment.

There is No Place Like Home

Our team is committed to your home comfort. Contact us today to learn more about how our team can help you obtain your home comfort goals.

  • BPI Gold contractor

What Makes Us Different?

The Building Envelope Process

Our multi-step system has proven time and time again to work efficiently for maintaining round the clock comfort. We’ll provide you with a customized plan is designed to achieve your home comfort year-round.

  • Review Our Comfort Goals
    We provide you and your family with a detailed analysis of our products and services. Next, our dedicated technicians work with you 1-on-1 to determine your goals and how best to achieve them.
  • Evaluate Areas of Heat Loss
    Once we have determined your goals, we run an analysis of where the major areas of heat loss are in your home in order to optimize our strategies. We want to ensure we leave your home as comfortable as possible.
  • Identify Energy-Saving Solutions
    Next, once we have determined any areas of improvement, our team provides you with our energy-saving solutions. We will look at all systems holistically and provide you with guidance on how best to enhance your home environment.
  • Provide Good, Better & Best Options
    After reviewing your options and deciding on a course of action, our experienced, dedicated, and efficient technicians will get to work on making your home as comfortable as possible.


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Your Home Comfort is Our Main Focus
  • - Energy Efficient
  • - UV Protection
  • - Added Security
  • - Curb Appeal