May embody measuring, cutting, assembling, and bolting structural framing and photo voltaic modules. Excludes photo voltaic PV electricians who are included in “Electricians” ( ) and solar thermal installers who’re included in “Plumbers, Pipefitters, and Steamfitters” ( ). Apply plasterboard or different wallboard to ceilings or interior partitions of buildings. Apply or mount acoustical tiles or blocks, strips, or sheets of shock-absorbing materials to ceilings and walls of buildings to scale back or mirror sound. Includes lathers who fasten wood, metallic, or rockboard lath to partitions, ceilings, or partitions of buildings to provide assist base for plaster, fireproofing, or acoustical materials.