(a) The department may authorize the limited use of specific construction techniques or materials that are defined by the department as part of one specialty trade by a specialty contractor licensed in a different specialty trade if those construction techniques or materials are a small but inseparable part of what is required to complete that specialty contractor's work. (b) Notwithstanding (a) of this section, a specialty contractor may perform work that requires the use of not more than three trades.
Alaska Legal Code