Abstract: A hook assembly including a hook adapted to be releasably attached to a portable masking device that adheres tape to masking material to form a composite masking material having a portion of the coating of pressure sensitive adhesive exposed so that the exposed adhesive can adhere the composite masking sheet along a surface to be masked. The hook includes an attachment portion having adapted to lay along a handle for the masking device, and a generally C-shaped engagement portion extending from the attachment portion that defines a recess. The engagement portion can be positionable around a structure with the structure in the recess to hang the masking device on the structure.