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2. Flashing (weatherproofing) - Wikipedia

   en.wikipedia.org/wiki/Flashing_(weatherproofing)

   Pipe flashing (pipe boot, vent boot, pipe flange) A product used where pipes penetrate roofs. Chimney flashing A general term for flashing a chimney to cover the intersections of the chimney and install a damp proof course (DPC) Kickout flashing At the very bottom of a roof/wall intersection, the lowermost step flashing specially formed to ...

3. Drain-waste-vent system - Wikipedia

   en.wikipedia.org/wiki/Drain-waste-vent_system

   Increasingly DWV pipe is ABS or PVC DWV-rated plastic pipe equipped with a flashing at the roof penetration to prevent rainwater from entering the buildings. Older structures may use asbestos , copper , iron , lead or clay pipes, in rough order of era of use.

4. Chimney - Wikipedia

   en.wikipedia.org/wiki/Chimney

   On a pitched roof where a chimney penetrates a roof, flashing is used to seal up the joints. The down-slope piece is called an apron, the sides receive step flashing and a cricket is used to divert water around the upper side of the chimney underneath the flashing.

5. Rain gutter - Wikipedia

   en.wikipedia.org/wiki/Rain_gutter

   Roof integral trough along the lower edge of the roof slope which is fashioned from the roof covering and flashing materials. Discrete trough of metal, or other material that is suspended beyond the roof edge and below the projected slope of the roof.

6. Ridge vent - Wikipedia

   en.wikipedia.org/wiki/Ridge_vent

   A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .

7. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   It protects the roof deck from rain before the roofing is installed. It provides an extra weather barrier in case of blow offs or water penetration through the roofing or flashings. It protects the roofing from any resins that bleed out of the sheathing. It helps prevent unevenness in the roof sheathing from telegraphing through the shingles.