Admitted to the Union in the year 1788, New York is the 11th state of the United States. It is home to roughly 20,215,751 people, and ranks as the 27th largest state, occupying an area of 141,297 km2. New York's climate is almost entirely humid continental, with warm summers and freezing winters - except for its southeastern tip, which enjoys a humid subtropical zone and has milder winters. The warm, summer conditions prevail in the state all the way from May to early on in October, which is when the cold air start to blow. Winter lasts largely during the period of November of April, and in most places is characterized by moderate-to-heavy snowfall. New York is vulnerable to nor'easters, which while largely not damaging does influence temperatures greatly.
For New Yorkers, having a roofing system which can withstand water and moisture (be it in the form of humidity, snow or rain) without having the problems that come with their accumulation - like moss, mold, fungus or pests. That being said, this is also a state known for its tremendous access to resources as well as innovative designs. Truth be told, there are more materials and designs here than one can count - but of course, some score higher than others. Generally speaking, the top choices are asphalt shingles, flat roofs, rubberized roofs (either alone or in combination with other shingles), 4 Ply roofs (used mainly in commercial settings, sheet metal and steel roofs (used for buildings that have long-term storage requirements). Other more unique types include hot roofs (which are unventilated to seal out the cold), cold roofs (which helps regulate temperature) and EPDM roofs (used for commercial properties and are extra-flexible).