TAMKO identifies dimensions, age-related brittleness, storm damage and manufacturing consistency as separate repair concerns. A similar color does not establish compatibility
TAMKO technical bulletin: Considerations for Replacing Fiberglass Asphalt Shingles.
What this means for your roof
TAMKO identifies dimensions, age-related brittleness, storm damage and manufacturing consistency as separate repair concerns. A similar color does not establish compatibility. Metric and English-size shingles must not be mixed, and even one manufacturer’s production locations or run dates can produce visible differences. Inspection may support a broader repair than the initially obvious damage.
A useful question for your contractor
Ask for the existing product and dimensions to be identified, and for a repairability assessment of neighboring shingles.
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: September 17, 2024. The date shown identifies the manufacturer document used for this summary.
Read TAMKO: Considerations for Replacing Fiberglass Asphalt Shingles
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.