Cooler conditions reduce shingle flexibility and can delay both flattening and sealant activation. TAMKO explains that contact with the adjacent shingle and sufficient warming are both important
TAMKO technical bulletin: Installation During Cooler Weather May Affect Appearance and Sealant Activation of Shingles.
What this means for your roof
Cooler conditions reduce shingle flexibility and can delay both flattening and sealant activation. TAMKO explains that contact with the adjacent shingle and sufficient warming are both important. Roof direction, shade, shingle color and contamination can affect the process, so one universal sealing deadline is inappropriate.
A useful question for your contractor
Ask how the crew will follow the cold-weather instructions and verify sealing on shaded roof slopes.
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.
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.