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2. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   Replacing the roofing felt on a Scout hall in Wales. Bituminous waterproofing systems are designed to protect residential and commercial buildings.Bitumen (asphalt or coal-tar pitch) is a material made up of organic liquids that are highly sticky, viscous, and waterproof. [1]

3. Asphalt roll roofing - Wikipedia

   en.wikipedia.org/wiki/Asphalt_roll_roofing

   These were the forerunners of the present asphalt and coal-tar-pitch built-up roofs. It is not known definitely when felt was first substituted for sheathing paper or when asphalt was first used as the impregnating agent, but it is known that the first asphalt-prepared roofing, that is, roofing manufactured ready to apply, was marketed in 1893.

4. Roof - Wikipedia

   en.wikipedia.org/wiki/Roof

   Most roof materials will last long after the manufacturer's warranty has expired, given adequate ongoing maintenance, and absent storm damage. Metal and tile roofs may last fifty years or more. Asphalt shingles may last 30–50 years. Coal tar built-up roofs may last forty or more years. Single-ply roofs may last twenty or more years. 5.

5. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   The reflectivity of built up roofs depends on the surfacing material used. Gravel is the most common and they are referred to as asphalt and gravel roofs. Asphalt degradation is a growing concern. UV-rays oxidize the surface of the asphalt and produce a chalk-like residue. As plasticizers leach out of the asphalt, asphalt built-up roofs become ...

6. Domestic roof construction - Wikipedia

   en.wikipedia.org/wiki/Domestic_roof_construction

   Domestic roof construction is the framing and roof covering which is found on most detached houses in cold and temperate climates. [1] Such roofs are built with mostly timber, take a number of different shapes, and are covered with a variety of materials.

7. List of roof shapes - Wikipedia

   en.wikipedia.org/wiki/List_of_roof_shapes

   Spiral, a steeply pitched spire which twists as it goes up. Barrel, barrel-arched (cradle, wagon): A round roof like a barrel (tunnel) vault. Catenary: An arched roof in the form of a catenary curve. Arched roof, bow roof, [11] Gothic, Gothic arch, and ship's bottom roof. Historically also called a compass roof. [12] [13] Circular