The best replacement for cellulose insulation is fiberglass.

The best alternatives to cellulose insulation are rated as following:
★★★★★  fiberglass
★★★★  foam
★★★  fiberglass insulation
★★★  foam insulation
★★  spray foam
★  fiberglass blown in
★  icynene
★  mineral wool
★  rockwool
★  blown in fiberglass
★  fibreglass
★  blown fiberglass
  atticat
  spray foam insulation
  fiberglass blown
  expanding foam
  pink fiberglass
  foam which is better

Your alternative for cellulose insulation is not listed? Suggest!
Speaking about cellulose insulation, one probably shouldn't forget about vapor barrier.

Other search terms related to cellulose insulation and their ratings are:
★★★★★ vapor barrier
You have in mind a companion for cellulose insulation and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of cellulose insulation in all years. Click on graph for more.
cellulose insulation
fiberglass
foam