Re: Insulating walls on 85 year old 2 1/2 story Colonial!
Let's answer your last question first --- it's absolutely a beneficial endeavor to add insulation. It's really not that expensive ( depending on material used )--- you will pay see a payback in reduced cost to condition the home--- doesn't cost a dime to maintain once in place.
Originally Posted by 85 Year Old Colonial
Yes, you can blow in a loose fill insulation such as cellulose down the wall cavity.
If there is no blocking midway down the wall this would make it simplier. It would also be a good idea to block off that opening between each stud bay for two reasons :
1 - fire stop
2- will help with enhancing the insulation performance by reducing air movement.
Now , the million dollar question -- does your home have Knob & Tube ( K&T ) wiring?
Houses of that vintage have a good likelyhood of having K&T wiring unless it has been replaced at sometime.
K&T is not allowed to be covered with insulation
"" an ounce of perception -- a pound of obscure "