What is the difference between a deck mount and curb mount skylight flashing kit?

Curb Mounted Skylight

The skylight is mounted on a wooden frame, known as a curb, that the installer builds around the opening on your roof. Curb mounted skylights are ideal for flat roofs up to a pitch of 60 degrees. For curb mounted applications there are two types of flashing kits: One for both asphalt and shake type roofs and a high profile/tile roof.

Deck Mounted Skylight

The skylight’s deck seal is nailed directly to your roof deck for a low profile, energy-efficient installation. Deck mounted skylights are best for roofs with a pitch between 14 and 85 degrees. Deck mounted skylights offer flashing kits for shingle or shake roofs, tile roofs and metal roofs as well as combi flashing which combines multiple skylights for a seamless look.