I’ve been remodeling my house one room at a time, I’m taking insulation very seriously and putting as much as I can. The rooms that I’ve remodeled are so hot during winter while rest of house is freezing, quite annoying for my HVAC system actually, but interesting how much money is just flying away through the walls
If I may suggest you focus on air tightness as well. Insulation isn’t very effective with air flowing through it. If you’ve worn a fleece jacket on a windy day you’ll know what I mean.
That, and vapour penetration through a poorly sealed envelope can lead to moisture issues.