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2. List of commercially available roofing materials - Wikipedia

   en.wikipedia.org/wiki/List_of_commercially...

   Roofing material is the outermost layer on the roof of a building, sometimes self-supporting, but generally supported by an underlying structure. A building's roofing material provides shelter from the natural elements. The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting ...

3. Photovoltaic mounting system - Wikipedia

   en.wikipedia.org/wiki/Photovoltaic_mounting_system

   Recently, tension-based PV racking solutions have been tested successfully that reduce weight and cost. [8] In some cases, converting to composition shingles, the weight of the removed roof materials can compensate the additional weight of the panels structure.

4. Passive solar building design - Wikipedia

   en.wikipedia.org/wiki/Passive_solar_building_design

   The U.S. Department of Energy states: "vertical glazing is the overall best option for sunspaces." [28] Roof-angled glass and sidewall glass are not recommended for passive solar sunspaces. The U.S. DOE explains drawbacks to roof-angled glazing: Glass and plastic have little structural strength.

5. Green roof - Wikipedia

   en.wikipedia.org/wiki/Green_roof

   A properly designed and installed extensive green-roof system can cost $108–$248/m 2 ($10–$23/sq ft) while an intensive green roof costs $355–$2,368/m 2 ($33–$220/sq ft) However, since most of the materials used to build the green roof can be salvaged, it is estimated that the cost of replacing a green roof is generally one third of the ...

6. Asphalt shingle - Wikipedia

   en.wikipedia.org/wiki/Asphalt_shingle

   Asphalt shingles on a home in Avalon, New Jersey. Two types of base materials are used to make asphalt shingles, organic and fiberglass.Both are made in a similar manner, with an asphalt-saturated base covered on one or both sides with asphalt or modified-asphalt, the exposed surface impregnated with slate, schist, quartz, vitrified brick, stone, [6] or ceramic granules, and the under-side ...

7. Flat roof - Wikipedia

   en.wikipedia.org/wiki/Flat_roof

   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 allow the roof space to be used as a living space or a living roof. Flat roofs, or "low ...