Should you worry about moss growth on your wood deck/railing systems?  This is a fairly common occurrence in homes with older deck systems.  

As it turns out, moss creates an environment conducive to elevated moisture conditions that could lead to deterioration over time.  It may look pretty, but looks can be deceiving!  Underneath moss growth that has been left alone for some time you just might find rotten wood…Yikes!  Moss growth should be removed to safeguard against water intrusion/damage into the future, and to avoid bids to repair/replace your deck system.  

Check out this link for more information on what to do when you see moss/organic growth on your deck/railing system: Removing Moss & Algae from Your Deck | by Trex