Jacking Up A Floor Joist

The 4 inch lally posts can be replaced by 6 x 6 inch lumber.

Jacking up a floor joist.

Shows raisinge a sagging floor gradually with bottle jacks. By jacking up the ceiling of the basement you. Jacking them up too fast may cause cracks in the walls and floors overhead. After the old joist is lifted by the jacks the new joist will now sit on the supporting walls or wall and i beam in our case while the old is lifted off of the structure.

Jacking up a floor and leveling it is easy with these simple instructions. On both sides of the problem area. Raise each jack by 1 8 inch at a time this will help to reduce any damage to window frames and plaster or drywall walls above the floor. The only tools required is a bottle jack string straight claw hammer circular saw and a light source.

Make repairs to settling piers and weak joists to fix swagging floors and roof lines. If a crack or sag is isolated to one area the sister joist should extend at least 3 ft. The idea behind sistering joists is that you jack up the sagging original joists add the new ones next to the old and join them together. Set a hydraulic jack and post under the beam and jack up the joists about 1 8 in.