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2. List of commercially available roofing materials - Wikipedia

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

   Cheaper than slate or tiles. The reduced cost of this particular style of roofing is especially apparent in its application and removal. Installation is very streamlined and a rapid process. Depending on the size of the roof and the experience of the crew, it is possible to remove old shingles and apply new ones on 2-3 houses in one day.

3. Twinwall plastic - Wikipedia

   en.wikipedia.org/wiki/Twinwall_plastic

   Although single layer polycarbonate sheeting is more flexible than polycarbonate in twinwall configuration, it still retains significant advantages over alternative materials, including glass. A typical 6mm sheet has a density of 0.72 g/cm^2 [ 6 ] and a thermal insulation R value of 0.3 m^2°C/W, while allowing 80% of visible light pass through ...

4. This 77-year-old New Yorker agreed to a ‘low-cost solar deal ...

   www.aol.com/finance/77-old-yorker-agreed-low...

   This 77-year-old New Yorker agreed to a ‘low-cost solar deal’ when fixing her roof — but the bill was a stunning $100,000, a sum she can’t afford. She’s not the only senior feeling deceived

5. Skylight - Wikipedia

   en.wikipedia.org/wiki/Skylight

   TDDs harvest daylight through a roof-mounted dome with diameters ranging from about 10 inches for residential applications to 22 inches for commercial buildings. Made from acrylic or polycarbonate formulated to block ultraviolet rays, the dome captures and redirects light rays into an aluminum tubing system that resembles ductwork. [4] Sloped ...

6. Polycarbonate - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate

   Polycarbonate is commonly used in eye protection, as well as in other projectile-resistant viewing and lighting applications that would normally indicate the use of glass, but require much higher impact-resistance. Polycarbonate lenses also protect the eye from UV light.

7. Solar shingle - Wikipedia

   en.wikipedia.org/wiki/Solar_shingle

   As of May 2019, the average cost of a traditional, roof-mounted residential solar panel installation in the United States was just above $3.00 per watt, according to the Solar Energy Industry Association. [14]