nora® rubber floorcoverings do not contain any plasticizers, so plasticizer migration is an impossibility. This means the floorings are dimensionally stable, and will not shrink once they have been fixed. Joint-sealing is accordingly not required. This cuts the installation costs and ensures a harmonious overall look without clearly visible joints which are often more susceptible to soiling.

Only noraplan® acoustic floorings, due to their high elasticity, have to be joint-sealed with nora® hot welding rod.

Joint-sealing is also recommended when moisture-sensitive subfloors are involved, in rooms with continual intensive wet cleaning, or in areas with stringent hygiene requirements, or other specialized utilization categories.