J/J Alexander, Inc.

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Roof Deck Attachment
 
4 Items Classifying the Roof Deck Attachment
1. Deck Material
2. Size of Nails
3. Nail Spacing
4. Deck Thickness

     There are four items to check in classifying a deck attachment. Deck material, deck thickness, fastener type, and fastener size.

     To achieve the best rating with plywood or OSB the deck must be at least 7/16 thickness with 8D nails or screws and must be spaced 6”/6” with less that 3 nail misses per 4’ of structure.

Deck Material

  • Plywood - OSB (minimum 7/16" thick)
  • Planks - Dimensional Lumber

Size of Nails or Screws

  • Determined by locating a missed nail/screw

Spacing of Nails

  • By Scanning with a meter

Measure Deck Thickness

  • Determine the thickness of the plywood

 


Roof Deck Attachment

 

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