Class Code: 5535

Per NCCI's Scopes Code Description:

Code 5535 includes outside sheet metal installation. The term “installation” contemplates operations ranging from the simple bolting of goods in place to more complex construction-like operations. This classification contemplates the installation of items such as sheet metal furnaces, skylights, spouting and flashing. The assignment of Code 5535 to these operations is based on the fact that while these materials are lighter than sheet metal, the installation methods employed are similar for each type of material, be they of the lighter weight materials or of the sheet metal variety.

Sheet metal siding installed on the exterior of a steel frame structure is assigned to Code 5535.

Certain types of sheet metal storage facilities, commonly referred to as “Butler Bins” when built using conventional construction methods, are assigned to the appropriate contracting classification covering each phase of the operation (e.g., Code 5535 for siding installation; Code 5551 for roofing; Code 6217 for excavation). When these types of structures are built using the “jack-up” method of assembly, which is performed at ground level, Code 5535 is applied to the siding installation as well as the roof assembly.

The construction of sheet metal Quonset-type structures (residential or commercial) is contemplated by Code 5535. Inasmuch as there is no distinction between the sides and roof (a continuous curve), the entire construction operation is classified to Code 5535. The roofing classification is not applicable to the “roofing” portion of this type of construction.

Additional representative operations that have been assigned to Code 5535 include sheet metal decking including installation for sub-roofs or floors; the erection of telephone booths; and the erection of sheet metal dustless clean air rooms.

Special Conditions:

•    Please refer to Code 5403 for extra-territorial premium determination guidelines that may be applicable to insureds that have operations outside their headquarters’ state.

Related Operations Not Classified to Code 5535:

•    Refer to Code 5537 for those insureds engaged in the erection or installation of duct work for heating, ventilation and air-conditioning systems when all or a majority portion of the work for an HVAC contract is performed by a single contractor.
•    Refer to Code 5645 or 5403 for aluminum or vinyl siding installation.
•    Refer to Code 5146 for the installation of portable furniture or fixtures, metal partitions, and modular partitions or workstations.


Note:  Applies to erection, installation, or repair operations. The manufacturing of these products at a shop to be separately rated.


Note:  Applies to erection, installation, or repair operations. The manufacturing of these products at a shop to be separately rated.



Silo erection when the silo is constructed from metal or glass fused to steel is also contemplated by Code 5535.

Rate per $100. of Renumeration: $ 5.62

Construction Exemption Required: Yes