Curb-mounted skylights are best for homes with somewhat flat roofs, where the pitch is less than 3/12. If the pitch exceeds 3/12, then the installer should put in a deck-mounted skylight for the ...

Dear James: A friend gave me a small (not curb-mounted or self-flashing) skylight for free. What is the proper method to build the curb and flash the skylight to avoid leaks in my cathedral ceiling?

As a builder, the only skylights I would install were “curb mounted.” I refused to install any of the low-profile, bubble-type skylights because I found them impossible to flash and seal.

Dear Pat: A friend gave me a small (not curb-mounted or self-flashing) skylight for free. What is the proper method to build the curb and flash the skylight to avoid leaks in my cathedral ceiling?