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  2. How Much Does it Cost to Replace a Roof? - AOL

    www.aol.com/much-does-cost-replace-roof...

    Basic asphalt shingles cost between $2,000 and $4,000 for ... A fixed skylight costs around $150 per unit and an additional $500 ... though high-quality asphalt shingles may last up to 50 years.

  3. Asphalt shingle - Wikipedia

    en.wikipedia.org/wiki/Asphalt_shingle

    The primary reason restrictions on the use of RAS exist is the rare presence of asbestos in asphalt shingles manufactured before the early 1980s. [16] Although the lifespan of a typical asphalt shingled roof is approximately 25 years, [19] concerns remain due to the practice of layering newly installed shingles on top of old ones. [16]

  4. Roof coating - Wikipedia

    en.wikipedia.org/wiki/Roof_coating

    Roof coatings can add 25 years to the service life of a roof and reduce the amount of discarded roofing materials that end up in landfills. The infrared image on the right shows 79 °C (174 °F) on the uncoated (black) section of the modified bitumen roof. The coated (white) section is 26 °C (79 °F).

  5. Bituminous waterproofing - Wikipedia

    en.wikipedia.org/wiki/Bituminous_waterproofing

    The weight designations originated with organic base felt weighing 15 or 30 pounds per 100 sq. ft. (6.8 ... for a steeply raked roof of 24-year asphalt shingles. ...

  6. Roof shingle - Wikipedia

    en.wikipedia.org/wiki/Roof_shingle

    An asphalt shingle roof has flexible asphalt shingles as the ridge cap. Some roof shingles are non-combustible or have a better fire rating than others which influence their use, some building codes do not allow the use of shingles with less than a class-A fire rating to be used on some types of buildings. Due to increased fire hazard, wood ...

  7. Asphalt roll roofing - Wikipedia

    en.wikipedia.org/wiki/Asphalt_roll_roofing

    The shingles produced in 1939 were sufficient to cover more than 1,000,000 dwellings, assuming an average size of 10 squares per roof. In two surveys of roofing materials in 20 Eastern States, - made during 1938, the kinds of roofing materials on 20,841 dwellings along 4,038 miles of highway were tabulated.

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