Common Subfloor

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Old 03-21-13, 05:08 AM
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Common Subfloor

Is there anyway to separate a common subfloor I share with the condominium next door. I have bothered constantly by impact noise from their children. I had one contractor tell me he could cut into the wall and separate it at that point.
 
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Old 03-21-13, 05:41 AM
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Anything is possible if you have the budget. Like the contractor mentioned he will have to cut open the entire wall that adjoins your neighbor. An exploratory hole would be a good idea to see if simply cutting the subfloor is easily possible. If you have a common wall it may not be possible but if there are two separate walls, one for each unit then it may be possible to cut the floor in between. Since there will be a lot of demolition just to gain access to the area it would not be cheap. This is the sort of thing you build in during construction, not try to retrofit.
 
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Old 03-21-13, 05:45 AM
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This contractor said to do the one 16 foot wall, he would remove about four feet high of the drywall, cut the floor and redrywall for $250.
 
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Old 03-21-13, 06:54 AM
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My guess would have been a lot higher than $250.
 
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Old 03-21-13, 09:48 AM
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Me too. Be sure to check his references!
 
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Old 03-21-13, 02:22 PM
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I would just be sure that the separation can actually be done like he's (contractor) is planning. You don't want him to open up the wall only to realize that it's more work than envisioned and he walks away.

It depends on the building codes in your area in affect when the condo was built. Often there are codes about fire breaks which can complicate things. It would also be helpful to know about what's under the subfloor and which way the joists run. If there were double joists, one under each condo's walls, then separating the subfloor sheeting could help a good deal with transmitted noise. If the joists run perpendicular to the walls then simply cutting the subfloor would give less benefit.
 
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Old 03-21-13, 04:51 PM
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We visited this back in February as well.

http://www.doityourself.com/forum/ba...oor-noise.html
 
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Old 03-21-13, 11:04 PM
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Have you checked with your condo association to find out what they can tell you about the construction method for that wall and floor and about what permits you'll need to obtain before doing the work?
 
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