Double sided masking tape for designing masks in all formats With the tesa® double sided masking tape 4836 you can design masks in all formats. This double sided masking tape is easy to use and holds protective masking material firmly in place. Adhesive on both sides of the masking tape allows you to make individual protective masks and to use it for large areas outdoors in particular. Apply the open side first to the area you wish to cover, as there is a non-adhesive area on the other side where the plastic masking foil shall be fixed to achieve large area masking protection during cleaning and renovation work like painting and plastering work.