Hail Resistance of Roofing ProductsBuilding Research Division, U.S. Institute for Applied Technology, 1969 - 9 pages |
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Page 6
A number of heavy weight and premium shingles were also investigated . Some of these resisted hail no better than the regular Type 235 square - tab shingles . However , a few performed significantly better , as discussed below . A Class ...
A number of heavy weight and premium shingles were also investigated . Some of these resisted hail no better than the regular Type 235 square - tab shingles . However , a few performed significantly better , as discussed below . A Class ...
Page 7
Similarly , three other shingles , all Class A , based on glass mat felts showed no felt damage on their obverse sides with hailstones below 2 in ( 5.1 cm ) in diameter ; one of these had a damage threshold at the 21 / 2 - in ( 6.4 cm ) ...
Similarly , three other shingles , all Class A , based on glass mat felts showed no felt damage on their obverse sides with hailstones below 2 in ( 5.1 cm ) in diameter ; one of these had a damage threshold at the 21 / 2 - in ( 6.4 cm ) ...
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Bibliographic information
| Title | Hail Resistance of Roofing Products Volume 23 of Building science series, United States National Bureau of Standards Volume 23 of National Bureau of Standards building science series |
| Author | Sidney H. Greenfeld |
| Contributor | Institute for Applied Technology (U.S.). Building Research Division |
| Publisher | Building Research Division, U.S. Institute for Applied Technology, 1969 |
| Original from | the University of Michigan |
| Digitized | 18 Aug 2006 |
| Length | 9 pages |
| Export Citation | BiBTeX EndNote RefMan |