TAMKO does not consider shingles submerged in floodwater suitable merchandise. Contamination can affect the factory sealant and expected service life
TAMKO technical bulletin: Fiberglass Shingles that have been Submerged in Flood Waters.
What this means for your roof
TAMKO does not consider shingles submerged in floodwater suitable merchandise. Contamination can affect the factory sealant and expected service life. The notice recommends appropriate recycling or disposal and distinguishes flooding from a covered manufacturing defect.
A useful question for your contractor
Ask whether replacement bundles or existing roof materials were submerged, and request documentation of their condition and source.
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 28, 2019. The date shown identifies the manufacturer document used for this summary.
Read TAMKO: Fiberglass Shingles that have been Submerged in Flood Waters
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.