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Walls Not Insulated and Cantilevered Over Porch – 1930 City Four Square

The home is a 1566 square foot City Foursquare built in 1930. The customer’s initial concerns were that the home had no insulation in the second floor walls and a cantilevered front porch.
Type of Home: City Foursquare
Year Built: 1930
Square Feet: 1566
Blower Door Test – Before: 4182
Blower Door Test – After: 2160
CFM Reduction: 2022
Reduction: 48%
Wise Home Energy performed an initial Blower Door Test which showed an airflow of 4182 CFM (Cubic Feet per Minute) of air moving past the blower door.
1930 City Four Square blower door test before.
Some of the service provided by Wise Home Energy to correct these issues include:

  • Whole attic insulation
  • Insulated 2nd floor walls
  • Insulated cantilever floor
  • Installed air sealing
  • Rimjoist insulation
And here is the result of the Blower Door Test taken after the air-sealing and insulation work was completed. The results show a CFM (Cubic Feet per Minute) of 2160, a reduction of 2022 CFM, or 48%. A great result, and another satisfied homeowner.
The After Blower Door Test Results

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