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 Shouldn't Abandon
- 17 Tiny Bathrooms We Love
- 20 Insanely Easy 60-Minute Home Improvements
- 70 Gardening Tricks and Ideas for Beginners
- 16 Inventive Beds You Can Make Yourself
- Capitalize on Your Attic: 10 Inspirations
- 15 Once-Popular Items Now Vanishing
- 133 Smart Storage Ideas for the Whole House
- 30 Things Every Adult Should Know How to Do
- 16 New Ways to Store Kitchen Necessities
- 12 Garden Sheds You Could Live (or Work) In
- Design a Rustic Bathroom: 10 Inspirations
- 7 Easy Budget-Friendly Backyard Makeovers
- 283 Great DIY Project Ideas
- The Right Path: 15 Wonderful Walkway Designs
- 10 Ways to Expand into Your Garage
- 17 Backsplashes for a Unique Kitchen
- Assembly Required: 15 DIY Kit Homes
- Make Your Small Bathroom Feel BIG
- 108 Easy Outdoor Living Ideas
- 10 Smart New Uses for Old Tires
- 14 Room Dividers to Organize Your Space
- 11 Clever Alternatives to Kitchen Cabinets
- Facade Facelift: Simple, Affordable Ways to Make a Better First Impression
- Reconsider Aboveground Pools: 10 Reasons Why
- 5 New Uses for Old Wooden Crates
- 21 Paint Colors That Never Fail
- 1 Dozen Ways to Maximize a Small Yard
- 12 Fresh Ideas for Your Kids' Room
- 11 Beautiful Clutter-Busting Closets