Tips for K&T Replacement

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Old 08-30-16, 11:10 AM
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Tips for K&T Replacement

Working on buying a new (to me) house as an investment/rental property. The inspection returned a handful of minor issues including a couple circuits of K&T wiring on the 2nd floor bedrooms. Most of the K&T seems to be from the light switches to ceiling fixtures.

Are there any tricks to replacing the wiring while causing the minimum amount of plaster damage/holes? No attic (really low and inaccessible) makes it harder. I envision cutting out a small corner at the wall/ceiling junction and fishing the new wire both directions. I'd imagine it's a bit difficult to drill through up through the header?

Anyway, any suggestions?

Thanks,
Mike
 
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Old 08-30-16, 11:39 AM
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You said second floor rooms.
Is there an accessible attic above those areas needing to be worked on ?

The attic is usually a good place to work thru.
 
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Old 08-30-16, 07:26 PM
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Electricians do drill through headers and than fish the new cables.

It would be much easier to drill away from doors and windows since the wood structure above these is much thicker.

If you do not drill through the header or cap or plate then the cables must pass close to the wall surface to get from inside the wall to inside the ceiling (or floor) and you would need "nailing plates" to prevent accidental nailing through a cable in the future when you might, say, be hanging a picture on the wall.
 
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Old 08-30-16, 09:37 PM
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I always make my holes away from the corners. Keep holes 2" or more away. Makes for easier repair.
 
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Old 08-31-16, 05:50 AM
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Here's a couple of tools I would purchase if you don't have them:

Oscillating tool
Right angle drill
Fiberglass glow rods, they are great for fishing
Spade bits of different lengths, including a stubby
Spade bit extensions in several lengths
 
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Old 09-01-16, 03:08 PM
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Thanks for the ideas. I didn't think about cutting a few inches away from the corner, that certainly makes sense.

I've had my eyes on fiberglass rods, that does sound like a good plan too.


Thanks - looking forward to a challenge!

-Mike
 
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