Hello all,

I usually hang out over in knots, but figured I would ask over here.  My “quick” updating project has hit a stand still.  The initial plan was to lay new hardwood floors and install new kitchen cab doors and drawers to existing boxes.  After pulling up the old vinyl and carpet, It became apparent that the subfloor is uneven.  The offenders seem to be a couple (3 to 4) high joists that have resulted in a drop of about 3/4″  over 10′ in the right rear quadrant of the house.  The rest is OK with minor peaks and valleys here and there.  The joists are 2*8 with 16″ OC and 3/4″ T&G ply.  After spending the afternoon yesterday in the crawlspace, (which is in great shape, no rot or moisture), the offenders seem to be minor settleing coupled with some initial sloppiness that set a couple of joists too high.  The lowest spot seems to be associated with a penetration of the foundation associated with mechanical, but no cracks or other irregularities were found.  Overall, the building appears to be quite stable and the high joists have been there for a while as evidenced by the dense amounts of nails attempting to hold down the edges of the ply attached to the highest joists.

What is going to be the best way to proceed?  I guess that there are a couple of options, either alter the offending joists in some manner, or build up the low subfloor to the highest point and make it flat.  Any advice would be much appreciated.

Dave