Roofing, siding, insulation, and waterproofing means to examine surfaces and specify the preliminary and preparatory work necessary to bring such surfaces to a condition where, under an agreed specification, acceptable work can be executed and fabricated thereon with such materials or material as to seal, waterproof, and weatherproof such surfaces by such means in such manner as to prevent, hold, keep, and stop water, its derivatives, compounds, and solids from penetrating and passing any such protective material, membrane, roof, siding, surface, or seal, thereby gaining access to material or space beyond such weatherproof, waterproof, or watertight material, membrane, roof, siding, surface, or seal with the use of any or all of the following: asphaltum, pitch, tar, felt, flax, shakes, shingles, roof tile, slate, and any other material or materials or any combination of any thereof, that use and custom has established as usable for, or which material or materials are now used as, such waterproof, weatherproof, or watertight seal for such membranes, roofs, and surfaces, but shall not include. a contractor whose sole contracting business is the installation of devices or stripping for the internal control of external weather conditions. Insulation means to install any insulation media in buildings and structures for the sole purpose of temperature control, in such a manner that buildings and construction insulation can be executed and installed, but shall not include any work other than those processes solely incident to the installation of the insulation media. Waterproofmg means to select and apply solutions of rubber, latex, asphaltum, pitch, tar, or other material or materials, or any combination of any thereof, to surfaces to prevent, hold, keep, and stop water, its derivatives, compounds, and solids from penetrating and passing such materials, thereby gaining access to material or space beyond such waterproofing.History: Contractors Lic. Bd. Classification of Contractors' Licenses, eff. 12 Feb 73, (part).