Easy - You insulate where there would be an ADVERSE effect with regards to temperature if you DIDN'T insulate the wall (or floor or celing, for that matter.)
If you want to heat one room and cool another room that's butt-up against it, then insulate. If the rooms are to be ALWAYS at the same temperature, don't insulate the wall.
My best to ya and hope this helps.
Jay J -Moderator
PS: If you want to spend that $$$, then consider sound-proofing material. THAT might prove useful ...
PPS: God Bless America!
However, for sound insulation purposes, insulation in all walls is worthwhile. It is relatively cheap compared to other building expenses and you will thank yourself for insulating your bedroom or den from your kids room when they are teenagers!
- 15 Old House Features We Were Wrong to Abandon
- 17 Tiny Bathrooms We Love
- 20 Insanely Easy 60-Minute Home Improvements
- 17 Design Inspirations for Mudrooms and Entryways
- 70 Gardening Tricks and Ideas for Total Beginners
- 16 Inventive Beds You Can Make Yourself
- Laundry Room Ideas to Knock Your Socks Off
- 10 Unexpected Spots for Accent Colors
- 11 Clever Alternatives to Kitchen Cabinets
- 159 Smart Storage Ideas for the Whole House
- 21 "Expert Picks" for Fail-Safe Colors
- 9 Easy Ways to Kill Weeds Effectively
- 20 Ways to Make a Small Bathroom Big
- 7 Easy Budget-Friendly Backyard Makeovers
- 11 Homemade Sheds to Fill Your Storage Needs
- Ultimate Lawn Care Guide: 12 Steps to a Prize-Winning Yard
- 10 Room Dividers to Bring Order to Your Space
- 11 Creative Garden Borders You Can Make—Easily!
- Tips and Tricks to Fit More into Less Closet Space
- Secret Rooms: 10 Special Spaces Hidden from Sight