If you are looking for insulated skirting for your mobile home or travel trailer, expanded polystyrene (EPS) is the perfect material. It can be provided in any thickness or height to meet your requirements and it is the most economical rigid insulation material. EPS panels can be used as a backer behind another skirting material such as the wood lattice in these photos or it can be a stand-alone skirting that can be painted with latex paint to match your trailer or mobile home.