Haag steel ball drop

Haag Engieneering test how an asphalt shingles holds up to a steel ball dropped from 20′ It’s supposed to imitate the UL tests done on shingle strength. … Haag Steel Engieneering Asphalt Shingle

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This entry was posted on Saturday, November 7th, 2009 at 2:56 am and is filed under Asphalt Shingles. You can follow any responses to this entry through the RSS 2.0 feed. Responses are currently closed, but you can trackback from your own site.

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