Answer by
Emonroe7 (20)
When you want the "best," I'll warn you, it will cost much more than the standard. The "best" material for decks that see a large rain has to be Timbertech or Trex. Both are wood plastic composites. Trex is easier to find, but has a chance to mold. Timbertech is harder to find but hold up better. Hope this helped.