How to cut hole between floors?

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  #1  
Old 06-19-17, 06:35 AM
Q
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How to cut hole between floors?

I need to put a 2" vent pipe from the basement to the roof going through 2 floors and then a 3" pipe at roof level.
If the wall is not a supporting wall, can I just cut a hole in the top and bottom plates between floors?
If it's a supporting wall, how would you do this?
 
  #2  
Old 06-19-17, 07:09 AM
J
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Supporting wall or not, boring a hole in a top or bottom plate between the studs is not going to hurt anything.
2" PVC is 2-3/8" on the OD so use a 2-9/16" Bit.
I do it with a self boring bit and a right angle Milwaulkee 1/2 drill.
Milwaukee Self Feed Bits, Selfeed Bits
 
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Old 06-19-17, 09:52 AM
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Make sure to seal the gap with fire stop!
 
  #4  
Old 06-20-17, 11:06 AM
Q
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Is it because it's a 4" wide support or just one hole won't make a difference.
 
  #5  
Old 06-20-17, 05:10 PM
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Only place the top plate is under load is where it sits over a stud, the rest supports nothing but the sheathing and drywall.
 
 

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