How do I best insulate my century home from the inside?

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How do I best insulate my century home from the inside?

Merner Row Design May 12, 2021Last updated: May 13, 2021

I have a century home that I am renovating myself as time and money permits.  I have a strong desire to make this home as comfortable as possible for my time in the home and for future homeowners to come. The exterior walls of the house are: plaster/lathe - 2x4 wood studs (no existing insulation) - wood sheathing - brick veneer (no real airspace to speak of). The interior plaster and lathe is cracked and damaged.  The plan is to remove the existing trim and plaster/lathe to have full access from the interior to the wall cavity.  Then insulate with Rockwool batts + Rockwool rigid board over the studs to provide a thermal barrier + Intello (or other) air/vapour barrier to allow breathing/drying + drywall (taped and painted). What insulation should I use in the wall cavity?  The top runners are Rockwool batts OR dense packed cellulose.  Should I consider HFO spray foam insulation? Thank you!

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