Best and worst ways to insulate 3 story 1920's lath stucco house in New England? Is there any type of insulation I should be careful to avoid? In particular, I am concerned about the permeability of the stucco, and the use of cellulose in such an old house. Any thoughts?

  • Are you insulating from the inside or from the outside? Are we talking balloon framing here? – ThreePhaseEel Jan 11 '18 at 4:07
  • From the inside. As for balloon framing, I am not sure. I have been hoping it would be possible to blow in insulation under the horsehair plaster. But given that, I can see it maybe important to know. Do you know how I could tell or find out? – Deborah Hulihan Jan 11 '18 at 4:30
  • What type of wiring is in this house if knob and tube blow in insulation can create a hazard. If the wiring has been upgraded to romex blow in would be fine. – Ed Beal Jan 11 '18 at 14:43
  • I have upgraded electrical, replaced all knob and tube. My concern is that the stucco seems likely to not be waterproof. – Deborah Hulihan Feb 3 '18 at 18:55

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