Jun 14, 2019 · The name PVC foam sheets could be misleading because no foam is present in those plastic signage substances. The sheets are. PVC foam sheets are in varying degrees of depth, such as those of the ones that are heaviest and 3 mm are 10 mm thick. The thickness of the PVC foam sheets causes it possible that they are trimmed and shaped at precisely the same manner that ACP sheets can be. PVC foam sheets may be used indoors or outdoors due for their resistance.