A plaster strip (2) according to the invention for placement on a building transition between a first building component, in particular a roller shutter guide rail, a slat guide rail, a window sill, a window or door frame, a Lisene or a beam, and a second building Component, in particular a thermal insulation and / or a plaster layer on a building wall and / or a building wall; comprises a base region (4), wherein on the rear side of the base region (4) a expansion strip (20) is arranged with a delayed expansion, which expands rearwardly in particular after the release of a containment region (34), and wherein at the front side of the base region ( 4) a plastering area (16) is arranged; wherein, in addition to the base region (4), a rear grip fixing leg (22) is provided which protrudes rearward with respect to the main extension direction of the base region (4).
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