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1935 wall re-insulation


In the process of removing the old tube and nobe electric in this 1935 house I didscovered the house used this rock type of "drywall" and had hardley any insulation in the walls.  Since the "drywall" was a bitch to work with because if crumbbled I decided to take all of it down.  I'm glad I did because I found several spots of rotting wood.  Now I need to redo the insulation and think I've decided on mineral whool battinging to do the job.  Most of the insulation that was fiberglass looked damaged when I pulled it out, so I'm concered about the new stuff getting wet.  There seems to be none of the foamboard insulation on the outside of the house like I seem them use today.  Basically it's the frame of the house then some vertical boards with 1/2" gaps between them, then this black paper, the original wood sideing and finally vinly siding ontop of the wood siding.  I was planing on of just sealing the gaps with cans of spray foam.  Will that be enough to protect the insulation or should I use some house wrap or something else for added protection from water and moisture?  I live in Northeast Ohio so we get hot humid summers and cold wet winters.

Than You,




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