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Replacing subflooring under door without removing wood flooring

Replacing subflooring under door without removing wood flooring

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  #1  
Old 01-06-19, 10:20 AM
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Replacing subflooring under door without removing wood flooring

Hi. First post but long time lurker.
I went to replace the back door to my house yesterday and found that the was no jamb sill and water infiltrated and damages the subflooring and the rim joist under it. Apparently the previous owners already replaced part of the rim joist and "painted" the subfloor, clearly thinking that paint would be a proper way to address a water leak.
Regardless of what the previous owner did, now damage involves the subfloor under the kitchen wooden floor to about the first joist and a portion of the rim joist. (see pictures below). The last picture shows the damage from the crawl space.

Removing the kitchen wood floor would be a lot of work and there is no way to do it without cutting it and leaving evident damage. I have access to the sub floor from the crawl space. Is there any way to replace the damaged portion of the subfloor from below without removing the floors?

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Last edited by PJmax; 01-06-19 at 12:08 PM. Reason: resized pictures
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  #2  
Old 01-06-19, 11:47 AM
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Welcome to the forums!

There is no way to replace the subfloor from below although you might be able to add plywood and 2xs to brace up the existing subfloor. If the hardwood is carefully removed you should be able to put it back down and not have it look like a patch job.
 
  #3  
Old 01-07-19, 12:05 AM
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3rd picture with brick, is that looking upward in the basement?

Is the brick on the exterior even though I dont see any in the outdoor pictures, maybe behind the siding below the door?
 
  #4  
Old 01-07-19, 08:38 AM
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Correct on both. The third picture is the crawl space looking up. The bricks are covered by the sidings and the deck.
 
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