
We realized doors were not insulated, so we carefully removed cover panels on the back doors and sliding door.

We lined the cavities with 2″ thick batt insulation. We are happy with the results as it seems to cut down on cold air drafts as well as hot air infiltration.

This is the lower portion of the sliding door. We also used some Great Stuff “Big Gap Filler” insulating foam sealant on the top and bottom 8″ of the sliding door for more efficient seal.