Definition
A paper-backed adhesive tape with a wrinkled (crepe) paper surface and a low-tack adhesive, used in aircraft maintenance to mask off areas during painting, doping, or surface finishing so that paint or fluids do not reach areas where they are not wanted. It is designed to be applied and removed cleanly without lifting underlying finishes or leaving heavy adhesive residue.
Plain English
A wrinkly paper tape with a light stickiness, used to cover and protect parts of an aircraft surface while the area next to it is being painted or finished.
Context Anchor
Seen in aircraft maintenance and paint-shop work, especially when preparing an aircraft surface for painting or touch-up work.
Derivation
‘Crepe’ comes from the French crêpe, meaning ‘crinkled’ or ‘curled,’ describing the wrinkled texture of the paper backing. ‘Masking’ refers to its job of covering — masking — areas that should not be painted.
Why Pilots Care
Crepe masking tape is useful for clean paint work, but it is not repair tape and should not be treated as a structural or flight-ready covering. Tape left in the wrong place can leave adhesive residue, hide damage, or come loose.
Intuition Check
Do not read “masking” as making something invisible or permanent. Here it means temporarily covering an area so paint or another coating does not get on it.
Example Sentence 1
Before spraying the new trim color, the technician applied crepe masking tape along the edge of the fuselage stripe.
Example Sentence 2
After the paint dried, the mechanic removed the crepe masking tape to reveal clean, sharp lines along the wing root.