Woodland Scenics: Flex Paste(TM) 16oz 473mL -Scenery Filler/Coating Material
Flex Paste bonds to wood, foam, plaster and other materials and forms a durable, waterproof surface when dry. Specially formulated for modeling, it will not shrink as it dries. It's ideal for sealing scenery, or as a road base for concrete or asphalt streets.