We have to jack up the walls of the Dutchmen 28' to replace the total floor. The walls have sagged
down at least 3" in some places. We don't have a hoist so we are thinking if using jacks on both sides starting at the wheel wells and working forward and then backward for each 4' section. Exterior walls are fiberglass. We have to remove the lag brackets to lift the camper shell up.I can't find any video or pictures as to how to lift the shell. The windows should have to come out as not to put them in a bind and brake the frame. Any suggestions are welcomed. We have two weeks to get this done and put back together. This is our home and a new job starts in January.
You may be able to slide the plywood beneath the walls without doing anything but slightly lifting the walls. By notching out the area where the brackets are, the flooring can slide beneath the walls. You may need to join the flooring in the center of the floor or else mismatch the pieces.
Make sure your new floor joists are placed properly to take this into account. The new sections may then be installed from the center and under the walls. New brackets may be needed to secure the walls to the new floor.
Good luck on your repairs!
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