I am building a room inside a metal building to house my train layout. Building is 30x40’. Train room will be 17x40’. Building will have sprayed on foam insulation . The walls are being framed up with 2x4s. I was planing on using sheet rock for interior walls of train room. Is there a better option than sheet rock? Would you tape/bed and texture walls inside train room? Would you just put on smooth coat of texture material so you could paint walls blue with white clouds. Building will have central heat and air. Other part of building is restroom and workshop. Floor is concrete.
