This skylight comes with a 10-year "No Leak" installation warranty when paired with EDL M08 flashing on a shingle roof (pitch 14°-85°), EDW M06 flashing on a tile roof, or EDM M06 flashing on a metal roof (flashing kits sold separately). It features Clean, Quiet, and Safe LowE3 laminated glass with a Neat® glass coating that keeps it cleaner, reduces outside noise, and has a 10-year hail warranty for glass breakage. Composed of double-paned argon gas filled LowE3 glass, it provides excellent year-round energy performance and added safety with laminated glass (required for out-of-reach applications according to building codes). For your specific roof type, order VELUX EDL M08 flashing for shingle, shake, or slate roofs, EDW M06 flashing for tile roofs, or EDM M06 flashing for metal roofs.