Hi, An engineer who inspected a 1925-built house I consider buying, noted a sag on the 2nd floor by bathroom. The bathroom was replaced 7 years ago and they put a lot of cement under floor tile (~5" high). He said it was too much weight. This bathroom is located near stars and therefore joists that holds it are resting on double-joists which run parallel to beams (the joists are not going to the beams because of the stars on their way). He said I need to put a pole running all the way to basement to support these double-joists, and in addition to reinforce the floor under bathroom by adding 7 joists or C-joists. I realize of course one can't say for sure without seeing it, but I wounder if the engineer maybe overkilling this just not have a liability in future? Is a floor sag a serious issue? The RE agent said most houses in this area she saw has the same issue.

It seems that 2x8 sub-flooring isn't something people talk about much in the these forums. I was replacing the tile in a small 5x8 full bath when I noticed my toilet decided to leak. I pulled up the pressboard underlayment to notice some water damage in the subfloor. A section about 3x3' was very wet and some sections of the boards were very soft. I also noticed the hole about 2x4". Attempting to dry it out, I put some work lights on the area. I might have made a slight mistake because the area started to get some slight warping in those 2x8's. Now I'm at the point where I'm wondering what to do. The warping is slight (about 2 mm hight diff) and is where the toilet will sit so no one will be walking on it. I don't want to half ass this but at the same time I'd rather put as little money and effort into this as possible. Check out some of the pics for a better idea of what I'm up against.[ATTACH]63774[/ATTACH][ATTACH]63775[/ATTACH] Appreciate the suggestions in advance, Michael