Archived - Standard Industrial Classification - Establishments (SIC-E) 1980

F - Construction Industries

42 - Trade Contracting Industries

While general contractors, in response to market demand, build complete structures classifiable to broad specialization groups, trade contractors are classified by the specific component they contribute to the total structure. The specialized trade contractors are engaged in one aspect common to different structures requiring specialized skills or equipment. Normally they supply the general contractor with their specialized service but in repair construction, and to a lesser degree in new construction, trade contractors are often engaged as "prime contractors", or jobbers, dealing directly with the principals involved. Establishments primarily engaged in maintenance, i.e. cleaning, rather than repair construction are classified in Industry Group 995 - Services to Buildings and Dwellings those primarily engaged in maintenance of highways, streets and bridges are classified in 4591 - Highway, Street and Bridge Maintenance Industry and those primarily engaged in maintaining wharves and docks are classified in 4559 - Other ServiceIndustries Incidental to Water Transport.

423 - Exterior Close-In Work

Establishments primarily engaged in close-in work such as masonry, siding, glass and glazing work, insulation, roofing and other exterior close-in work.

4231 - Masonry Work

Establishments primarily engaged in conventional or specialty masonry work, except interior marble work. Establishments primarily engaged in interior marble work are classified in 4276 - Terrazzo and Tile Work, construction.

4232 - Siding Work

Establishments primarily engaged in the installation and repair of siding, cladding, metal doors and window frames and related work. Establishments primarily engaged in glass cladding are classified in 4233 - Glass and Glazing Work, construction.

4233 - Glass and Glazing Work

Establishments primarily engaged in the installation of glass, glass cladding, mirrors and other glass products. Establishments primarily engaged in cladding, other than glass, are classified in 4232 - Siding Work, construction.

4234 - Insulation Work

Establishments primarily engaged in weather-proofing exterior wall cavities and roof attic spaces by installing various insulating materials. Establishments primarily engaged in insulating pipes and duct runs are classified in 4256 - Thermal Insulation Work, construction.

4235 - Roof Shingling

Establishments primarily engaged in roof installation and repair involving asphalt shingles or roll roofing, cedar shakes, etc.

4236 - Sheet Metal and Built-Up Roofing

Establishments primarily engaged in sheet metal roofing, built-up tar and gravel roofing, roof tiling or slating, and associated metal roof work. Establishments primarily engaged in sheet metal and other duct work are classified in 4244 - Sheet Metal and Other Duct Work, construction.

4239 - Other Exterior Close-In Work

Establishments primarily engaged in exterior close-in work not elsewhere classified.