@ExPLiCiT i put in a Github about this. Tier3+ is brick, Tier2+ (Mortared Stone i think) and Tier1+ is logs

and Tailoring table actually says 32 Tier3+ materials

@Marlas depends which "Mortared Stone" you are using, the ones called Mortared Stone Column, Mortared Stone Floor, Mortared Stone Roof and Mortared Stone Wall are NOT the Mortared Stone that is needed for a room (this is in latest 6.0.3 version)
https://cdn.discordapp.com/attachments/375529665307082763/378246662914703361/snap548.png this is a snapshot taken from thew Quarry table Crafting Window, the top one is the one you will need for a room

Posted in Official "Eco Discord" November 8th 10:23pm

New staging out as we get closer to 6.1 release (planned for early next week)