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Old 09-29-2015, 09:27 PM   #16
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post pics.
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Old 09-29-2015, 10:14 PM   #17
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OK- I checked the crawlspace. The joists are actually 4x6's, and they're sitting on concrete blocks ~6' apart. The plywood is actually 1 1/8" (not sure why I thought it was 3/4"). The plywood is in 4'x8' sheets, so why wouldn't they span 4'? Regardless, the plywood does appear to be attached directly to the joists.

Not sure what pix you'd like me to post at this point- the floor is all Frankensteined with these extra pieces of plywood, but here are some of the photos I took before I started messing with the floor:

Why does the subfloor have to be flat?-floor1.jpg

Why does the subfloor have to be flat?-floor2.jpg

Why does the subfloor have to be flat?-floor3.jpg

You might notice the white mold on them and the water stains. Another reason why I was thinking I might want to replace them- though that's going to be pretty expensive, now that I know I've got to get 1 1/8" ply instead of 3/4". I did bleach them and air them out (and fixed the underlying problem, in case you were wondering), so I had hoped I could manage. And the problem with the flatness isn't because of board warpage, it appears to be more just because the joists aren't totally level to eachother. The individual boards themselves are flat, but there does appear to be a dip at one joist, and a rise at the next one.

Any help you guys can give me is totally appreciated
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Old 09-30-2015, 05:46 AM   #18
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Quote:
Originally Posted by preciouschristy View Post
OK- I checked the crawlspace. The joists are actually 4x6's, and they're sitting on concrete blocks ~6' apart. The plywood is actually 1 1/8" (not sure why I thought it was 3/4"). The plywood is in 4'x8' sheets, so why wouldn't they span 4'? Regardless, the plywood does appear to be attached directly to the joists.

Not sure what pix you'd like me to post at this point- the floor is all Frankensteined with these extra pieces of plywood, but here are some of the photos I took before I started messing with the floor:

You might notice the white mold on them and the water stains. Another reason why I was thinking I might want to replace them- though that's going to be pretty expensive, now that I know I've got to get 1 1/8" ply instead of 3/4". I did bleach them and air them out (and fixed the underlying problem, in case you were wondering), so I had hoped I could manage. And the problem with the flatness isn't because of board warpage, it appears to be more just because the joists aren't totally level to eachother. The individual boards themselves are flat, but there does appear to be a dip at one joist, and a rise at the next one.

Any help you guys can give me is totally appreciated
It's a no brainer for me.

I would have had those boards ripped out and had the underlying problem fixed faster than all the messing around you did. It's easy to fix joists from the top with no sheathing in the way.
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Old 09-30-2015, 10:02 AM   #19
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Quote:
Originally Posted by preciouschristy View Post
OK- I checked the crawlspace. The joists are actually 4x6's, and they're sitting on concrete blocks ~6' apart. The plywood is actually 1 1/8" (not sure why I thought it was 3/4"). The plywood is in 4'x8' sheets, so why wouldn't they span 4'? Regardless, the plywood does appear to be attached directly to the joists.
They're 6' long, but how far apart are the spaced? If it's really 4x6s 4 feet apart, that ain't gonna cut it, even with a full 1" of plywood on top.
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Old 09-30-2015, 09:16 PM   #20
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Not sure what pix you'd like me to post at this point-
the joists, supports, attachments, foundation. in the crawl space.
looking at your floorboards shows us nothing.
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Old 10-02-2015, 01:52 AM   #21
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Are you sure they are spaced 6' apart.?
That would mean the plywood is either cut to 6' lengths, or runs parallel with the joist.?
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Old 10-02-2015, 03:00 AM   #22
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Hey guys-
Thanks for all the help, but I think at this point, I'll consult (or hire) someone here who knows the local codes- I appreciate all the advice, but I just feel like it's getting too difficult to explain, especially when it seems like things are so different in different regions. This might have been too big a project for me to tackle alone-
Thanks
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Old 10-02-2015, 03:43 AM   #23
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Pics, or a sketch, would help. . And a location ; there might be a local member from here that might point you in the right direction.
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