House shaking - who to call
I have a 1936 cottage. At some point, the previous owners built a 2nd story in the attic space. They built it on top of the 2x6 ceiling joists instead of putting in the right 2x10 or 2x12 supports.
Last summer/fall, we remodeled the upstairs after the toilet leaked. We replaced 90% of the ceiling joists with 2x12s but left the utility room alone. (why? I don't really know). All was fine until we got a new washing machine. It is a front load, super sonic thing and it spins ultra fast.
Everytime the washer goes into the spin cycle, the whole house shakes. Doors downstairs rattle, pictures on the wall vibrate, etc. I am afraid we are going to shake something lose, but I dont know who to call. My previous contractor is too busy/not interested/etc. (side note - never use a neighbor as your GC)
So, what kind of person do I call?