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  2. 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 ...

  3. GAF Materials Corporation - Wikipedia

    en.wikipedia.org/wiki/GAF_Materials_Corporation

    GAF is an American manufacturing company based in Parsippany, New Jersey. [1] Operating as a subsidiary of Standard Industries, GAF is the leading roofing and waterproofing manufacturer in North America, with 30 locations across the U.S. GAF produces both commercial and residential roofing products, as well as pavement coatings.

  4. Asphalt roll roofing - Wikipedia

    en.wikipedia.org/wiki/Asphalt_roll_roofing

    Asphalt roll roofing or membrane is a roofing material commonly used for buildings that feature a low sloped roof pitch in North America. The material is based on the same materials used in asphalt shingles ; an organic felt or fiberglass mat, saturated with asphalt , and faced with granular stone aggregate.

  5. Dust collector - Wikipedia

    en.wikipedia.org/wiki/Dust_collector

    A dust collector is a system used to enhance the quality of air released from industrial and commercial processes by collecting dust and other impurities from air or gas. Designed to handle high-volume dust loads, a dust collector system consists of a blower, dust filter, a filter-cleaning system, and a dust receptacle or dust removal system.

  6. Acme United Corporation - Wikipedia

    en.wikipedia.org/wiki/Acme_United_Corporation

    Acme United paid $7.0 million in cash. DMT had revenues in 2015 of $5.4 million and EBITDA of approximately $1.0 million. [31] Exactly one year later, Acme United acquired Spill Magic Inc. for $7.2 million in cash. Spill Magic is a manufacturer of Spill Magic absorbents and related products that are used to prevent slip & fall accidents.

  7. Celotex - Wikipedia

    en.wikipedia.org/wiki/Celotex

    [3] The wallboard business was sold to BPB plc, its roofing products business to CertainTeed in 2000, its fiberboard products division along with the Celotex brand to Knight Industries LLC in 2001, [2] and its rigid foam insulation division to the Dow Chemical Company in 2001. [6] Celotex moved again, to Saint Petersburg, Florida, in 2001.

  8. Asbestos shingle - Wikipedia

    en.wikipedia.org/wiki/Asbestos_shingle

    They often resemble slate shingles and were mass-produced during the 20th century as these were more resilient to weathering than traditional slate shingles for the reason that slate is very soft and prone to weathering. Due to health risks of asbestos products, the European Union has banned all use of asbestos, including asbestos roof shingles ...

  9. Ducted propeller - Wikipedia

    en.wikipedia.org/wiki/Ducted_propeller

    The Kort nozzle is a shrouded propeller assembly for marine propulsion. The cross-section of the shroud has the form of a foil, and the shroud can offer hydrodynamic advantages over bare propellers, under certain conditions. Advantages are increased efficiency at lower speeds (<10 knots), better course stability and less vulnerability to debris.