Skirting really improves the appearance of a layout. The SGMA mandates grey full length skirting on the outside edge of their displays, but several members add green skirting to the interior for a more finished look. Both attach with Velcro, which makes access easy.
Kirk Lindvig, USA Track LLC
My brother Chuck, with carpeted SGMA modules (with skirting) at the International Toy Train Expo last weekend-