Bison panel over old roof deck

The Composite Deck: Fastening New Sheathing Over Deteriorated Boards, Rafter Screw Withdrawal, and Cyclic Dynamic Deflection

• October 1, 2026
• admin

Across heritage plantation estates in Wayanad, colonial institutional structures, and older residential properties undergoing modernization across South India, roof rehabilitation projects frequently uncover aging, deteriorated structural decks: Spaced timber planking with gaps exceeding twenty to thirty millimeters. Traditional tongue-and-groove boards displaying dry rot, insect boring, and cross-grain cupping. Legacy thin plywood panels suffering from water …