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2. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   Flat roof in Los Angeles. Flat roof in Warszawa Centralna railway station in Poland (1975) A flat roof is a roof which is almost level in contrast to the many types of sloped roofs. The slope of a roof is properly known as its pitch and flat roofs have up to approximately 10°. [1] Flat roofs are an ancient form mostly used in arid climates and ...

3. Membrane roofing - Wikipedia

   en.wikipedia.org/wiki/Membrane_roofing

   Membrane roofing is a type of roofing system for buildings, RV's, Ponds and in some cases tanks. It is used to create a watertight covering to protect the interior of a building. Membrane roofs are most commonly made from synthetic rubber, thermoplastic (PVC or similar material), or modified bitumen. Membrane roofs are most commonly used in ...

4. Polyvinyl chloride - Wikipedia

   en.wikipedia.org/wiki/Polyvinyl_chloride

   Dielectric Breakdown Voltage. 40 MV/m. Polyvinyl chloride (alternatively: poly (vinyl chloride), [6][7] colloquial: vinyl[8] or polyvinyl; abbreviated: PVC[8]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene). About 40 million tons of PVC are produced each year.

5. Rain gutter - Wikipedia

   en.wikipedia.org/wiki/Rain_gutter

   Eaves gutter and downpipe. Decorative lead hopper head dated 1662, Durham Castle. A rain gutter, eavestrough, eaves-shoot or surface water collection channel is a component of a water discharge system for a building. [1] It is necessary to prevent water dripping or flowing off roofs in an uncontrolled manner for several reasons: to prevent it ...

6. Piping and plumbing fitting - Wikipedia

   en.wikipedia.org/wiki/Piping_and_plumbing_fitting

   Copper fittings for soldered joints. Pipe fittings: 1) Copper (solder); 2) Iron or brass (threaded); 3) Brass (compression); 4) Brass (compression to solder); 5) Brass adapters. PVC fittings. A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube ...

7. List of This Old House episodes (seasons 11–20) - Wikipedia

   en.wikipedia.org/wiki/List_of_This_Old_House...

   On the roof, Bruce Killen reviews the progress the new wood shingle roof and the ingredients that go into a roof designed to last 50 years, even in the harsh island environment: heavy roof sheathing, tarpaper, bitumen membrane along edges and in valleys, copper valleys and drip edge, a three-dimensional mesh that allows a layer of air beneath ...