Fastener problems

Roofing · Asphalt Shingles · printed page 10 (PDF page 11)

Book index entries

Asphalt Shingle – Roofing Fastener Problems Fastener Problems – Asphalt Shingle Roofing Roofing – Asphalt Shingle Fastener Problems

Text in the illustration

asphalt shingle
nail driven too far
nail not driven far enough
tears through shingle above
nail too short

Generated explanation

The illustration shows overlapping asphalt shingle courses with three roofing nail installation problems marked by red crosses. An underdriven nail protrudes and tears through the shingle above. An overdriven nail damages the shingle at the fastening point. A third detail identifies a nail that is too short.