yeah its an absolute beast, 305x305. What can ya do, the engineers calculations came back with that and i aint gunna argue as we love it and everyone who sees it says how mad it is, a great talking point. Its marked "British Steel", id imagine it sat as surplus from a car park before it ended up in my house. Yeah it needs fire protecting, thats a christmas job.
Anyways, so caulking the corners is not something to do? i'll just leave it then and caulk in the future when/if it cracks.