Ice and water shield

In NC, code requires ice-and-water shield at eaves on most residential roofs in colder zones to prevent ice-dam backups, and at valleys and around penetrations on virtually every roof. The minimum extent is from the eave edge to two feet inside the warm wall line. Older roofs often have none — just felt paper through the valleys — which is a leak source we see all the time.

On a storm-damage replacement, ice-and-water shield is a code-required upgrade in any area that has it on file or any area code now requires it. That is a clean ordinance-and-law line item on the supplement. Carriers occasionally try to omit it on the original Xactimate estimate — cite the code section and it goes back on without an argument.