In many “pre-war” homes, exterior sidewalls were often left uninsulated, plaster on the inside and sheathing and siding on the outside used in its place. These walls allow the transfer of large amounts of heat, making the home inefficient, drafty, and uncomfortable.

Dense-Packing Sidewalls

Insulation can be added to exterior walls by “dense-packing” cellulose insulation into wall cavities from the exterior. This is accomplished by:

  1. Removing a few rows of siding (above and below “window level” on each floor);

  2. Drilling through the exterior wall sheathing;

  3. Inserting a fill tube into the empty cavity.

Working from the top down, cellulose insulation is packed in at high density, resulting in a finished R-Value of 12-14, which drastically reduces drafts and leakage. When the work is completed, siding is replaced and sealed.

Foam Board for Sidewalls

In some homes, exterior walls contain only “half-batts” of insulation, or are packed with inferior products like newspaper, back-plaster, or balsam wool (sawdust). These low R-Value obstructions make dense-packing impractical, but there is still hope! In conjunction with a siding contractor, our team will:

  1. Remove the original siding;

  2. Tack a continuous layer of foam board insulation on to the exterior;

  3. Seal seams, edges, window, and door openings;

  4. Install new siding over this insulation layer.

Taking care to make sure sidewalls are properly insulated a sealed improves the comfort and efficiency (and curb appeal!) of your home.

Get in touch with us to set up your sidewall consultation and services!

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Testimonials

Nichole H., Hudson, WI

St. Croix Energy Solutions recently came to our house for a home energy assessment. The staff while scheduling the appointment, the staff that came out and taught us about home energy, the staff explaining the rebate offers and the team that came out to perform the work were all kind, patient, organized and energized about their work~ no matter which role they played.


My husband and I had certain concerns, but Pete shared more tips on how to improve our home to make it more energy efficient. He walked through the whole house showing us areas that needed updating, gave us informative packets and gave us time to think and ask questions. The staff was prompt at r... (read more)