MAY 2002
ASHI Reporter May 2002, Feature

Inspecting Today's Predominant Residential Installed Roofing Material: Asphalt Composition Shingles

I find myself inspecting asphalt composition shingles more often than any other installed roofing material. During the past 25 years as this type of shingle gained in popularity, the most frequently used type changed from a primarily organic (cellulose) reinforced, Class C fire-rated shingle to an inorganic (fiberglass) reinforced, Class A fire-rated shingle.

By: John Cranor read full article
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