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One more set of questions that I am wondering about. Which kind of screws/nails do you think I should use for connecting the old subfloor to the new joists and what kind of glue or adhesive do I use for the sistered joists that I plan on clamping together and screwing together? I was going to...

So I was planning on screwing down the 1x6 planks to the new joists. Will that not pull the joists and 1x6 together?

I don't plan on installing new joists though because they were all replaced 6 years ago with pressure treated ones that were sistered to the old joists. So would I just try to get glue on the top of the joists that are already their and then try to send in screws at a 45 degree angle to suck the...

I don't want to do this major surgery but at the same time when I am done with this fix I don't want to mess with it again ever while living here. I plan on ripping up the carpet, hardwoods, and underlayment to expose the subfloor first and see if it is salvageable. If it looks decent I will...

The notch was to be level with the previous joists. 2x8's were a little to short so they used 2x10's and notched them enough to be level with where the house was before. It wasn't to provide extra strength.

If I am able to block it that should work to hold up the new sheeting between the wall and the nearest joist. I plan on cutting the subfloor flush with the wall so I can install the larger 1'' subfloor. I will try to make sure to have a block underneath the joints of the subfloor too. Any tips...

I was just referring to the concrete foundation. The gap between the top of the concrete and the bottom of the old subfloor is the area I was referring to when I said I wanted to block it or put in some kind of 4x6 that is the same height as the gap to support it.

Thanks for the suggestions. What would be the best bet for raising the 2 walls that run parallel to the joists? I was thinking about putting in 9'' tall 4x6 posts on the stem wall every 12''to support that wall or blocking underneath that wall to support it when I do the subfloor. It is more...

No idea what to do about the drainage issue. The house has been dealing with this for almost 100 years so I figured if it was going to cause an issue it would have by now.The problem is that I am at sea level and when it rains hard we even get standing water in our yards where I live. So since...

I know I don't have a sill plate on the 2 sides of the house that the joists land on the stem wall. I know they did it wrong but I have to live with it now. They notched and landed them on the concrete with a roofing shingle between the two layers. Now the other 2 sides of the house where the...

What would I use to hold in the blocking? Would I use joist hangers and just mount them to the interior sides of the joists or use 3'' screws on the outside of the joists? Any suggestions on screws or lag bolts? I may have to sister in some joists to level the floor since the joists are notched...

I was looking into buying a toe kick saw so I can flush cut against a wall. That way I can put in the thicker subfloor. If I blocked underneath the wall between the closest joists and then cut would it be ok? Not sure if I will be able to run a new joist underneath the wall but we could try...

Crawlspace. I probably have around 30'' or so give or take from the bottom of the floor joists to the ground.

They are all notched like this. I would say they are notched anywhere from 1'' - 2''. They are 2x10's. I don't think its a structural issue although one of them is is starting to show signs of getting crushed by excessive weight from above (I have a safe over the one that is) so I plan on...

Any tips on if I do replace the subfloor? I have a feeling its going to be a gut job and want to be prepared for the worst of it.

Not sure why but I don't think my response posted. Ideally I wouldn't want to have to replace the whole subfloor in the areas that I walk. Underneath walls are areas I don't really want to mess with if I don't have to so I plan on blocking the areas underneath walls that are parallel to my floor...

Pulling up the edge of the carpet in my living room their is a gap between the hardwoods and first layer of subfloor. The 2nd layer has rot on it for sure. Not sure about the bottom (3rd layer) one. I really just want to fix it right and I know its going to not only be time consuming but...

I am starting to look into replacing all subfloor in my 1000 square foot house that is closing in on 100 years old. I have hardwoods underneath the carpet and then it appears as though I have 2 layers of subfloor. I know I have atleast one layer of 1x6 diagonal subfloor. I wasn't expecting two...