The Fines Stripe Is Not Always the Nail Line
Bulletin revision: February 27, 2024
GAF explains the headlap stripe on applicable Timberline shingles. An appearance feature must not be mistaken for the specified fastening zone.
GAF technical bulletin: Timberline® shingles with fines stripe in headlap.
What this means for your roof
GAF explains the headlap stripe on applicable Timberline shingles. An appearance feature must not be mistaken for the specified fastening zone.
A useful question for your contractor
Ask the installer to identify the actual nail zone on the product being installed.
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 revision: February 27, 2024. This is the date of the manufacturer source, not a claim that this website guide existed on that date.
Read GAF: Timberline® shingles with fines stripe in headlap
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.