Specifications for interior linings in room structures include materials such as drywall, plaster, and eco-friendly options like recycled content or low-VOC finishes for walls. Ceilings may feature plasterboard or acoustic tiles with high noise reduction and integrated insulation for energy efficiency. Floor linings can be made from durable materials like hardwood, laminate, or sustainable options such as bamboo or recycled carpets. Emphasis is placed on durability, comfort, and sustainability, including high recycled content, low-emission finishes, and energy-efficient properties to enhance both the room’s functionality and environmental impact.