Insulation, Radiant and Vapor Barriers - Insulation over Wiring
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Sundance876
03-27-09, 09:00 AM
Hello;
I have a 1950's era house with some of the old knob and tube wiring. I am planning on blowing cellulose insulation into the walls. It seems that this might present a problem around this old wiring style, but I would like to avoid having to rewire the entire house. Is it safe to blow cellulose insulation into wall/ceiling cavities that have knob and tube wiring, or is it a fire hazard? Thanks
I have a 1950's era house with some of the old knob and tube wiring. I am planning on blowing cellulose insulation into the walls. It seems that this might present a problem around this old wiring style, but I would like to avoid having to rewire the entire house. Is it safe to blow cellulose insulation into wall/ceiling cavities that have knob and tube wiring, or is it a fire hazard? Thanks
diyplank
03-27-09, 09:19 AM
Here is my honest opinion!! Re wire your house before insulating!!! If you can/do blow insulation in there you will have hell running new wiring on your exterior walls!! I love cellulose. But I am not sure if it can cover the k & t wiring.
Good Luck
Good Luck
sidestep22
03-27-09, 06:09 PM
Hello;
I have a 1950's era house with some of the old knob and tube wiring. I am planning on blowing cellulose insulation into the walls. It seems that this might present a problem around this old wiring style, but I would like to avoid having to rewire the entire house. Is it safe to blow cellulose insulation into wall/ceiling cavities that have knob and tube wiring, or is it a fire hazard? Thanks
Everything I've seen in my my research says its a bad idea and is probably against codes (you would have to check your own particular codes where you live). Here is a link to a website that basically says get rid of it as it would be a fire hazard.
Tracking Down Knob-and-Tube Wiring | Electrical & Lighting | This Old House (http://www.thisoldhouse.com/toh/asktoh/question/0,,430694,00.html)
Michael
I have a 1950's era house with some of the old knob and tube wiring. I am planning on blowing cellulose insulation into the walls. It seems that this might present a problem around this old wiring style, but I would like to avoid having to rewire the entire house. Is it safe to blow cellulose insulation into wall/ceiling cavities that have knob and tube wiring, or is it a fire hazard? Thanks
Everything I've seen in my my research says its a bad idea and is probably against codes (you would have to check your own particular codes where you live). Here is a link to a website that basically says get rid of it as it would be a fire hazard.
Tracking Down Knob-and-Tube Wiring | Electrical & Lighting | This Old House (http://www.thisoldhouse.com/toh/asktoh/question/0,,430694,00.html)
Michael