A prior owner of my house was a mason. I know this because I get his union stuff (I’ve lived here for 15 years; at this point it’s not my problem).

He installed a huge fireplace and hearth… on top of 2 layers of old hardwood flooring… so when I ripped that out, I made the hearth unstable. Yay! It’s also an absolutely massive radiant structure, and everyone is shocked that it’s… designed for a small pellet stove.

It’s both well done, and not well done at all.