Published on March 26th, 2014 | by Henri0
Creating storage area under deck
Q. We recently bought a house with a large deck but no place to store things like a lawn mower, ladders, boats, etc. What is the best way to make the area under a deck waterproof for that purpose?
A. The easiest way would be to build an “under-the-deck” roof that stops short of the beam supporting the deck if the beam is at the very end.
Screw two pressure-treated wood strips under the deck joists. The first one can be a 2-inch-by-2-inch strip. The second one can be a 2-inch by 4-inch set on edge. The first strip should be screwed to the bottom of the deck joists about 1-inch from the house wall. The second one should be screwed to the bottom of the floor joists about a foot from the beam. If the span is too great, and you need a third wood strip, rip a piece to fit the space between the bottom of the deck joists and the top of the new roof, or use the 2-inch by 4-inch strip there and a deeper piece at the end.
If the floor joists are cantilevered (projecting beyond the beam), you still should stop short of the beam unless you want to provide some way to allow proper drainage under the beam. Otherwise, the construction steps are the same.
Choose metal panels and screw them to the wood strips through the top of the “Vs” or corrugations.
As an alternative, you can buy a specialty product–plastic panels made for that purpose. The manufacturer is American Dry Dec, and information is at http://americandrydeck.com.by