Material and installation
Shingles, membranes and metal coverings have different requirements. Installation, flashing details and component compatibility all matter in an assessment.
Exposure and maintenance
Exposure, debris, ventilation and past work provide context. Keep invoices, photos and warranty documents to support future assessments.
The condition today
A manufacturer’s stated lifespan comes with conditions. To make a decision, compare those documents with the observed condition and proposed work.
