A shingle's tested wind classification and its contractual wind warranty are different. Owens Corning explains that installation requirements and warranty enhancements can differ even when products share a classification
Owens Corning technical bulletin: Wind Classifications Asphalt Shingles Tech Bulletin.
What this means for your roof
A shingle’s tested wind classification and its contractual wind warranty are different. Owens Corning explains that installation requirements and warranty enhancements can differ even when products share a classification. Thermal sealing and the actual product’s warranty conditions remain important.
A useful question for your contractor
Ask for both the applicable test classification and the written wind-warranty requirements.
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin dated: August 2023. The date shown identifies the manufacturer document used for this summary.
Read Owens Corning: Wind Classifications Asphalt Shingles Tech Bulletin
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.