ECO Double Layered Shingle

ECO double layered asphalt shingle has special color design which can be easily 
applied and has unique beauty harmonizing with four seasons. Moreover, ECO asphalt 
shingle contains a factory applied adhesive strip that is activated by the sun's heat 
after installation and seals each shingle to the next course. The seal strip also 
provides much of a shingle's resistance to wind uplift.