What does the U.L. fire resistance rating for a shingle mean?
The Underwriters Laboratories (U.L.) ratings signify that the shingles were manufactured to pass a certain set of standards to qualify as fire resistant. Organic shingles carry a U.L. Class C fire resistance rating. Fiber glass shingles carry a U.L. Class A fire resistance rating. Either is appropriate for NY residential applications. Your contractor or local building codes officer can tell you what the requirements are for you particular area.