My joists are longer than 16 feet. Can I still use UnderDeck?
Yes, absolutely. Most decks with joists that are longer than 16′, have a beam that runs perpendicular to the deck joists. At this beam, you end the system and install a common household rain-gutter to collect the water exiting the joist and boundary gutters. You then “start over” on the other side of the deck and continue the system. To prevent water from dripping down from the cross-beam, you will need to install two water diverters over the top of the beam. One of the diverters will direct water to the collector panel on one side of the beam and the other will direct water to the collector panel on the other side of the beam. If your cross-beam is on the same vertical plane as your joists, you will not need to install additional water diverters at the beam/joist intersection. When estimating and ordering, it’s easiest to think of your deck as two separate decks with a kit for each “deck”. For example, if you have a deck with a joist length of 25′ and a width of 30′ and a beam that in
