Is it true that new asphalt shingles indicate the installation of a new roof?

The indication that new asphalt shingles are installed does not necessarily confirm the installation of a new roof. It's possible for asphalt shingles to be replaced or re-roofed without a complete new roof system being installed. This replacement might occur due to localized damage or wear, rather than a full roof overhaul which would typically include all components like underlayment, flashing, and ventilation systems.

While freshly installed shingles can be a sign of recent work on a roof, there are numerous scenarios where shingles are replaced while maintaining the underlying structures. This practice is often referred to as "roof overlay" or "roof recovering," where new shingles are installed over existing ones, which is also permitted under certain building codes. Additionally, if the condition of the roof deck and other components does not warrant a full replacement, only the shingles may be changed, indicating less comprehensive work.

In summary, the presence of new asphalt shingles does not alone confirm that a new roof has been installed; thus, the answer is accurately identified as false.