Floor Joist Crown

This is a crown.

Floor joist crown.

I am retiling bathroom floor and have a very noticable crown on one joist the other joists all appear level. The joist on the other side of the crowned joist was properly level meaning it was in plane with the end joist. Not enough for concern. The joists that is cut will stay crowned unless acted upon by an outside force though it may drop a teensy bit.

Long joist is applied. One of the joists close to the end joist of the house had a very significant crown in it. Then use screws to draw down the crown then set the splicing joist in tight. Actually the 2x4s could be added after the notch is made and the glue and 8 ft.

If the crown is less than about 3 8 you can just sand it down with a belt sander. If it s really bad you might have to pull the sub floor and plain down the joist but that s not much fun. Take a look in the crawl space to see if anything is forcing the joist up beam stub wall. You need to make sure the hump in each floor joist is pointing to the sky.

Between it and the end joist just 12 inches away there was a 5 8 inch drop. It appears the previous tiler tried to deal with the crown by putting a grout line directly on joist and tilting the tile slightly but it is still quite noticeable.