How Does a Deck Drainage System Work?

Written by adam cloe
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Desk drainage systems essentially work as a system of gutters underneath a deck. They work to channel water so that the area under an elevated deck remains dry during all types of weather. Drainage system channels made of plastic or aluminium are placed under the boards of the deck. When water runs between the boards of the deck, it is collected into these channels, which then move the water away from the deck.

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There are several different major brands of deck drainage systems. One of them, called the DEK Drain, was designed by Keith Risser. His system is easily installed, inexpensive and requires little maintenance. Dry-B-Lo is another brand which is known for its constant innovation and development of new products. One of the newer additions to the Dry-B-Lo brand is a systems of hidden channels--they can't be seen from the outside but can still withstand large quantities of ice and snow.

Other Types

Some deck drainage systems hang from vinyl rails or other attachments under the deck. While they waterproof the underside of the deck, they also create a finished ceiling. This ceiling is more or less permanent as long as the deck drainage system is installed. On the other hand, these ceiling systems don't protect the frame, so any electrical appliances attached overhead are still vulnerable.
Other types of systems attach collecting panels between joists in the deck. These joists then move the water into a draining panel or a gutter that goes off to the side.

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