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NOVATO — Thirty years ago, the average roof basically had a two-fold composition: shingles placed over a felt underlayment. In the decades since, roofing manufacturers have invested much into research and development, with the aim of improving roof performance and longevity. Today, these ongoing innovative efforts have culminated in what’s called the “roofing system.”
The term “roofing system” refers collectively to the various elements that make up a modern roof, from shingles and underlayment to leak barriers and ventilation. By working together, these elements form a “system” that helps ensure long-term durability. Since roofing systems substantially increase roof lifespan, manufacturers are able to offer extended warranties on roofs built in accordance with their system-based specifications. So, if you’re in need of a new roof, ask your contractor about the benefits of a roofing system.