Originally posted by knighttemplar1960:

I have a huge 50x50 meter interior compound. Its surrounded by an earthen berm, a dry moat, and another earthen berm with a core wood pole as a bridge. Nothing gets inside the compound or can damage interior stone work by throwing rocks. I have 2nd floor hearths on stone floors supported by stone columns for each of the bed rooms and I have a 3rd floor attic with thatch above that and have occasionally had to repair a slight amount of damage to the stone floors the hearths sit on.

I also have a stone tower in the mountains that I claimed and converted into a taming base for wolves. I had to repair damage to the top row of stones every few game days until I topped the stone tower with thatch. Game is currently over 1,500 days.

Not sure what's going on with your game, but stonework simply does not get damaged by weather in the vanilla game. If you're not using mods, you could be experiencing a weird bug. If you are using mods, I'd check there.

Originally posted by Tom:

I assume if he is asking about this, he's no where near being able to build with stone yet.

It's still worth mentioning exceptions.