I just inherited a house that was built in 1859. It is an old farmhouse. 2 story. An addition was done but the upstairs floor is approx 6" higher than original floor. I really want to level this out and increase downstairs ceiling BUT am I asking for a headache? My thought was to gut house - intall new trust joists ( I think I spelled that correctly) - done. But....... I could use some opinions. Am I opening a 'can of worms' ??? Thanks
Welcome to the forum! You can change your floor elevations to a certain extent by sistering joists, but this would only take some of the dips and gullies out of a room's span. 6" is a lot! You would have interior bearing walls to contend with as well as new footings for them if you properly consulted a Structural Engineer to get a plan of attack. As Mike said, to replace the floor system would be a total deconstruction of the roof and upper story walls, all of them.
Be safe, Gary
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