Railing Solutions For Deck Over Dry Living Space - DecksGo10 Apr 2015 ... vinyl membrane is a long term proven waterproofing solution and if installed properly will last a long time for you. ... fascia Mounted Railing This is a very popular technique and removes the risk of the post base attachment locations ever leaking. But it also means you have to build your deck with reinforced rim joist to joist connectors because the railing will now be connected to the fascia. ... But it does not sound like you are looking for a wood railing solution.