Mineral wool wall system

A wall system for a building having a first room and a second room, comprising:

• (a) a first panel comprising:
• a first batting material positioned between a first board and a second board;
• and
• (b) a second panel comprising a second batting material positioned between a third board and a fourth board,
• wherein the fourth board of the second panel faces the second board of the first panel, the first board of the first panel faces an interior of a first room, the third board of the second panel faces an interior of a second room, and wherein the second board and the fourth board both comprise mineral wool boards comprises at least one mineral wool board,
• wherein a gap is positioned between the first panel and the second panel, the gap forming an open space between the first panel and the second panel,
• wherein studs formed from lumber are embedded within the first batting material of the first panel and the second batting material of the second panel such that end portions of the studs extend vertically within a thickness of the first and second batting materials, and
• wherein the first board is attached directly to a first side of at least two studs that extend vertically within the thickness of the first batting material and the second board is attached directly to a second side of the at least two studs that extend vertically within the thickness of the first batting material, and wherein the third board is attached directly to a first side of at least two studs that extend vertically within the thickness of the second batting material and the fourth board is attached directly to a second side of the at least two studs that extend vertically within the thickness of the second batting material.