US Patent 9435114 Expansion or control joint and gasket system

A building comprises an exterior substrate, such as an exterior prepped for application of a building material, having an expansion or control joint fixed to the substrate and a layer of a building material applied on the substrate and overlapping a portion of the expansion and control joint. A groove is formed between the expansion and control joint and the layer of building material, and a sealant is disposed in the groove, adhesively bonding to the expansion and control joint and the building material. For example, an M-shaped, cup-shaped or A-shaped removable gasket strip may be removably coupled to the expansion or control joint during application of the building material and may be removed, subsequently, to form the groove.