Specifications include, but are not limited to: Remove existing valley. Install high temperature ice and water shield extending at least 24" (or as space allows) on either side of the valley •Install new valley with materials similar to the existing valleys •Remove all slates around exhaust fan curb adjacent to the valley, install ice and water shield extending at least 24" (or as space allows) around the entirety of the fan curb •Remove and replace all failed sealants on exhaust fan curb with new non-shrinkable sealant •Remove all slates around two (2) vent pipes adjacent to the exhaust fan curb, install ice and water shield extending at least 24" (or as space allows) around the entirety of the vent pipes. •Remove two (2) existing pipe boots and replace with new pipe boots and properly re-flash