Do I need ice and water shield with a zip system roof?

8×24 structure. Shed style roof with 2/12 pitch. Zip system roofing flashed with a mix of zip tape and zip liquid flash. 8×24 structure. Shed style roof with 2/12 pitch. Zip system roofing flashed with a mix of zip tape and zip liquid flash.Read MoreGreenBuildingAdvisor