Exposed Shingle Nails: More Than a Cosmetic Detail
Bulletin revision: February 1, 2021
Exposed fasteners can create water-entry and corrosion risks. GAF distinguishes correct concealed fastening from face-nailing through the weather surface
GAF technical bulletin: Exposed nails on shingles.
What this means for your roof
Exposed fasteners can create water-entry and corrosion risks. GAF distinguishes correct concealed fastening from face-nailing through the weather surface. A dab of sealant should not be treated as a permanent substitute for a properly repaired shingle.
A useful question for your contractor
Ask whether the damaged shingle can be replaced and fastened correctly.
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 1, 2021. This is the date of the manufacturer source, not a claim that this website guide existed on that date.
Read GAF: Exposed nails on 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.