Nails must engage the intended fastening area and both shingle layers while respecting nearby joints. Owens Corning distinguishes painted nail lines from SureNail strips
Owens Corning technical bulletin: Laminate Shingle Nailing Tolerances Tech Bulletin.
What this means for your roof
Nails must engage the intended fastening area and both shingle layers while respecting nearby joints. Owens Corning distinguishes painted nail lines from SureNail strips. A nail driven through the shingle somewhere above the exposed area is not necessarily correctly placed.
A useful question for your contractor
Ask how nail position and penetration are checked for your exact shingle product.
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: February 2024. The date shown identifies the manufacturer document used for this summary.
Read Owens Corning: Laminate Shingle Nailing Tolerances 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.