R905.16.1

Section R905.16.1 is titled 'Deck requirements' and covers requirements for roof coverings. The requirement for photovoltaic shingles to be installed on solid or close-fitted decking, unless specifically allowed by the manufacturer to be installed on spaced sheathing is established. The purpose of this section is to prevent water intrusion and detachment from the structure.

The model shows a roof section with spaced lumber sheathing (which is not allowed per this section, unless specifically allowed by the manufacturer).