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2. Covering (construction) - Wikipedia

   en.wikipedia.org/wiki/Covering_(construction)

   The phenomenon is simple: heated from below, the snow melts, flows between the slope and the snow cover, then freezes passing over the overhangs of the roof exposed to the cold air. Tons of ice can accumulate. The "double roof" is the most effective way to counteract these drawbacks. The complex consists of:

3. Snow guard - Wikipedia

   en.wikipedia.org/wiki/Snow_guard

   Three-pipe Snow Fence System Snow Guards in Jackson, WY, USA Standing seam metal roof with Snow guards to keep snow from sliding off the roof too quickly. A snow guard is a device used to retain snow and ice from falling from one surface to a lower one; in contemporary usage, they are installed to prevent snow/ice pack from avalanching and damaging people, plants, and property below.

4. Bituminous waterproofing - Wikipedia

   en.wikipedia.org/wiki/Bituminous_waterproofing

   The underlayment also sheds any water which penetrates the roof covering from an ordinary leak, a leak from wind-driven rain or snow, wind damage to the roof covering, or ice dams. However, the application of underlays may increase the roof temperature, which is the leading cause of ageing of asphalt shingles. Not installing an underlay may ...

5. Watch: Drone footage shows caved-in roofs after lake-effect ...

   www.aol.com/watch-drone-footage-shows-caved...

   A few scattered snow showers are expected in the area Thursday evening as the lake-effect snow event winds down. Original article source: Watch: Drone footage shows caved-in roofs after lake ...

6. Flashing (weatherproofing) - Wikipedia

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

   In earlier days, birch bark was occasionally used as a flashing material. [7] Most flashing materials today are metal, plastic, rubber, or impregnated paper. [8]Metal flashing materials include lead, aluminium, copper, [1] stainless steel, zinc alloy, other architectural metals or a metal with a coating such as galvanized steel, lead-coated copper, anodized aluminium, terne-coated copper ...

7. Roof shingle - Wikipedia

   en.wikipedia.org/wiki/Roof_shingle

   Many shingle installations benefit from being placed on top of an underlayment material such as asphalt felt paper to prevent leaks even from wind driven rain and snow and ice dams in cold climates. At the ridge the shingles on one side of the roof simply extend past the ridge or there is a ridge cap consisting of boards, copper, or lead ...

8. Florida Mystery: Chunk Of Ice Crashes Through Roof - AOL

   www.aol.com/news/florida-mystery-chunk-ice...

   This wasn't your usual call for the local fire department. They responded after a large chunk of ice crashed through a Florida roof Monday. Pieces of ice were also scattered on the ground.

9. Membrane roofing - Wikipedia

   en.wikipedia.org/wiki/Membrane_roofing

   Membrane roofing is a type of roofing system for buildings, RVs, 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 ...