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!

Contact UsEnergy Assessments for $250 or less

Schedule your FREE Home Estimate

Testimonials

Susan S., Hudson, WI

Dear Pete,

I had an audit by St. Croix Energy Solutions. You were prompt, professional and had very valid and reasonable suggestions. I felt no undue pressure from you at all! Your suggestions included issues I suspected and some I had not.

The amount of information I got in the audit was worth 10 times what I paid.

I did as St. Croix Energy Solutions suggested and I can feel a difference in the house. It is 7 below today and quite tolerable in the rooms that were not tolerable before. The crew that did the work was really good. The... (read more)