Expansion or control joint and gasket system

An exterior of a building, the building comprising a wall, the exterior of the building comprising:

• the wall disposed vertically to the ground;
• a layer of a building material disposed against the wall;
• an expansion or control joint, a portion of the expansion or control joint being disposed against the wall, the layer of the building material overlapping the portion of the expansion or control joint against the wall but not overlapping another portion of the expansion or control joint, such that the another portion of the expansion or control joint is exposed, and an interface exists between the expansion or control joint and the layer of the building material, and an opening is formed at the interface;
• and
• a sealant is disposed in the opening, such that the sealant is exposed and forms a portion of the exterior of the building and contacts a substantial portion of the another portion of the expansion or control joint and a substantial portion of the building material, wherein the sealant bonds to the substantial portion of the another portion of the expansion or control joint and bonds to the substantial portion of the building material, such that the sealant seals the interface between the expansion or control joint and the building material wherein the expansion or control joint comprises an M-shaped profile, and the layer of the building material extends to one side of the M-shaped profile, the opening being formed on the one side of the M-shaped profile, such that the opening provides a “caulk tray” for the sealant disposed within the opening between the M-shaped profile and the building material, sealing the interface without entirely covering the another portion of the expansion or control joint.