Question: are gaf timberline hd shingles class 4?
Answer: Timberline® ArmorShield™ II Impact-Resistant Shingles combine the beauty of Timberline® (North America's #1-selling shingle) with UL 2218 Class 4 Impact Resistance. Their beauty is unlike any others, thanks to our patented High Definition® shadow bands (U.S. Patent No. 5,666,776).