Case Studies

Dr. Energy Saver St. Louis Case Studies: Creating a More Energy Efficient Home in Belleville, IL

Tuesday, June 24th, 2014 by Rachel Sipes


These homeowners have owned their house for six months in Belleville, IL and had planned to live there forever.  They were unhappy with the conditions of their home and wanted to get fixes completed so they could continue living there.  One day, the couple visited the Bull Home Show and found out about Dr. Energy Saver St. Louis.  After making the call and getting a Complete Home Energy Check-up, Ben and Melanie discovered how much energy they were losing and why their house was always so cold in the winter and humid in the summer.

The home had several places where air was getting out.  These places included bathroom fans, light fixtures, and the attic.  The attic didn't have enough insulation in it to keep the heat inside.  The bathroom fans were allowing exfiltration of conditioned air to flow into the attic and then outside.  The light fixtures didn't have proper covers on them or insulation around them to stop the air and conserve the heat.

Ben and Melanie wanted to not only warm their house and save money in the long run, but to also make their home more energy efficient.


To combat the many issues in Ben and Melanie's home, Dr. Energy Saver applied and installed several devices to keep the home feeling less humid and warmer in the winter. The first job that was done was applying spray foam to various parts of the home. The attic was sealed to include top plates, chases, registers, vents, plumbing, and wiring.  Spray foam was also used along the vertical knee-wall to improve the thermal boundary and at the bottom side of the balloon framing to reduce air infiltration, conductive heat transfer, and to improve indoor air quality.

After air sealing was taken care of, a intumescent coating was put over the spray foam insulation to create an ignition barrier.  Next air seal covers were put over the bathroom fans and light fixtures to stop exfiltration of conditioned air into the attic. Each bathroom fan also had a vent installed that was directed to the roof and connected to the exhaust fan to move exhausted air outside.

To make sure the house stayed warm, loose-fill cellulose insulation was blown into the attic. To get into the attic easily, an air tight box was put in position to provide a dam to contain the attic insulation. Lastly, roof vents and ventilation baffles were situated. The roof vents allowed for an increase in attic ventilation. The baffles were installed into the joist bays as needed to preserve air flow through existing soffit vents, prevent insulation from filling the soffits, and prevent the wind washing of the insulation.

After all these changes, the homeowners love that their home is much more energy efficient and more acceptable for their comfort needs.

Project Summary

Certified Building Analyst: Jake Hurst

Foreman: Jim Jones

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Dr. Energy Saver St. Louis
524 Vandalia Street
Collinsville, IL 62234