Open eaves can expose nail tips below the decking. Malarkey explains that appearance does not remove the required fastener penetration
Malarkey technical bulletin: Fastening Shingles Over Open Overhangs.
What this means for your roof
Open eaves can expose nail tips below the decking. Malarkey explains that appearance does not remove the required fastener penetration. Its bulletin allows trimming protruding ends under the stated thin-deck conditions without affecting its wind warranty. This is a product-specific detail, not permission to use nails too short to secure the roof.
A useful question for your contractor
Ask how the required penetration and the finished appearance of exposed eaves will both be addressed.
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 edition: July 2026. The date shown identifies the manufacturer document used for this summary.
Read Malarkey: Fastening Shingles Over Open Overhangs
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.