Under Deck Drainage Systems in Wisconsin and Minnesota
An Under Deck Drainage System also called an Under Deck Ceiling, is like a dropped-ceiling underneath your second story deck. The ceiling actually collects the rainwater that would normally fall between the deck boards, and moves it into a rain gutter and away from your deck.
It is similar to the construction that we all see at a gas station above the Gas Pumps. There is no sloped roof, but an engineered metal panel collection system attached to frame work. You can see a similar framework that already exists by looking at All Exteriors’ raised decks. The system simply collects the water and slopes it into a gutter. The gutter slopes to a downspout, the downspout drains the rain into a controlled location.
Simply put, it’s a waterproof ceiling attached to the bottom of a deck.