Extension Special Series No. 11-L
All Sioux 400 houses have a plywood sub-floor. The floors in all of the Sioux 400 houses have been tiled with vinyl asbestos tile. Vinyl asbestos tile, which is very durable, resistant to grease, and easy to maintain, is an excellent wearing material and can be used anywhere. But, the tile can be dented or marred if care is not used in handling heavy furniture.
South Dakota State University
Service, Cooperative Extension, "Your Floors: Protection, Maintenance, Repair" (1971). SDSU Extension Special Series. 93.