Front cap added insulation

It would be costly but there are companies that do spray foam insulation. You might be able to take it directly to them (to save costs) and have them use a minimally expanding foam, and drill small holes in the closet back wall to spray the foam in that way between the closet wall and front cap.

Several years ago I had to repair a delamination on the inside of my front cap. I opened up the wall on both sides of the closet to get enough room to work. There is insulation on the back of the closet wall but as you guessed there is none on the cap itself. When I fixed my repair I spray foamed the back of the cap. It worked great and did make a difference. I finished off the work with cedar paneling and you would never know it was ever touched.

Good luck if you want to insulated the front cap. It is a dirty, messy job. Another hint -- make sure you do it in late fall or early winter when it is cool. Lesson learned.

Enjoy the road. We do.

bigdon68

What about pumping something in there?

I removed the sliding mirror doors and put up insulated curtains....don't have to mess with the doors, covers entire open closet area and keeps the cooler air out better than the metal sliding doors...one of the best DIY things we did for the 5er....insulated curtains match bedroom colors perfectly..

Would mean dismantling my entire front closet. And the front cap sure isn't coming off. Ain't gonna happen.

That would be pretty tricky without removing it first.

Insulation