Roofing Warranty Guide

Manufacturer, Workmanship & Extended Coverage

Roofing warranties come in three flavors: manufacturer (covers defective shingles, typically 25-50 years prorated), workmanship (covers installation errors, typically 1-25 years from the contractor), and extended system warranty (covers both, requires certified installer, typically 25-50 years non-prorated). This article explains what each actually covers, what voids them (improper ventilation is the #1 voider), and what questions to ask before signing a roofing contract.