Can the deck pan system be installed on both new and existing decks?

Yes. For new deck construction, the system is installed after all joists are in place and before the deck surface is added — the pans are positioned on the joists, Hott-Wire is routed through the channels, and the deck face is then installed over the top. For existing decks, the deck surface must be removed to expose the joists, the pan system installed, and the deck surface reinstalled. Both 12-inch and 16-inch joist spacing are compatible.