sister joist, existing wire in way

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  #1  
Old 09-11-18, 08:04 AM
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sister joist, existing wire in way

I am sistering some floor joists in a room, but there is some existing electrical wire in the way and I don't want to pull new wire, or can't easily.
Is there a way to sister around the wire?
(a) drill a hole in the sister joist, cut it, make 2 halves and rejoin them together in place?
(b) cut a notch and slide the sister over the wires
(c) just cut the sister in half and bolt into place on one side of the wire, then leave a small gap and put a new sister joist up on the other side?
 
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Old 09-11-18, 08:23 AM
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Depends why you are sistering it. If you are doing it for structural reasons or if its just to have a wider surface for nailing subfloor.
 
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Old 09-11-18, 08:51 AM
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The foundation of the house subsided a few inches over the last 100 years. We are having the foundation stabilized but afterwards want to level the floors.
I figured sistering joists was easier than putting in leveling strips.
 
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Old 09-11-18, 09:49 AM
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If you are just leveling the floor, then just use 2x4 to avoid wires and if even that is not enough notch it.
It will not have any structural strength.

If you need structural strength, then you will have to remove the wire and pull it again. You cannot cut the joist in the middle and it has to run all the way like original joist was run.
 
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Old 09-11-18, 09:52 AM
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Is putting flooring on top, structural strength? I mean it needs to hold weight, desks, beds, etc.?
Or is that not counted as structural? the existing joists hold the walls just fine.
 
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Old 09-11-18, 10:00 AM
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It is not structural, but make sure you drive plenty of nails to distribute weight evenly.
If the room is small enough and level is not off by more than a inch, self-leveling compound may be better choice.
 
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Old 09-11-18, 10:12 AM
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TBH, the whole apartment is like that. One section is 2 inches lower than the other (in one room anyway).
We were planning on stripping all the floor and subfloors and then sistering the joists.
Was just going to start with this one room.
Would a laser level be best?
 
  #8  
Old 09-11-18, 10:24 AM
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Laser level will make it easier.
You can also use string.

Sometimes you have no choice but the just live with unleveled room because if you level the floor, the door may not close any more.
You could cut the door, but with hollow core door, you cannot cut more than 1/2".
 
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