Chimney removal - extending floor joists

[cdbe]

Refer back to my bending diagram, and have a look at "joist notching" - slightly shallower sister joists with a bit of careful notching will do the trick.

 

[ree]

OP,
Use a 7 x 2 ledger & your ledger plan will still work.
Dont sister against rotted timber,cut out all the rotted joist end & then do a bolt-on

 

[TheEasterBunny]

Thanks all for your advice. My uncle came round last weekend and cut all the wires, put the ledger board up and new joist parts and reconnected the electrics. That part is now done, floor boarded over but the ground floor is yet to go