Construction Performance Guidelines
TABS ON ASPHALT SHINGLES ARE NOT LINED UP
Shingles shall be installed to provide a generally uniform pattern when viewed from a normal viewing position on the ground from any given location.
One-Year - Work and Materials
Shingles not meeting the acceptable condition shall be repaired.
The primary role of roofing is to protect the building from the weather. Slight variation in the appearance of the roof is acceptable.