OK all you deck people. Several years ago I had my rather large deck completely replaced due to rot. The new deck used white cedar from the great northwest. I was told that it is extremely resistent to the normal deteriorating factors. So be it.
The carpenter poured new piers but kept them close to the ground. Then he mounted the end pieces (what ever they're called) on edge across the piers. On one side of the deck near a flower garden the mulch was placed up to the deck touching the side. Over the past 5-7 years the mulch decayed when had the effect of this end piece and all the bannisters attached to it to be below the surface of the mulch. As this was on the garden side no one really paid any attention.
This year, however, someone sat on the railing and most of the ss screws attaching the bannisters to the end piece detached exposing the fact that the end piece of the deck is quite rotted through as are the lower 6-10" of all the bannisters.
I purchased 2 x 10 x 18' of pressure treated lumber to attached to the old piece as I am not familiar with how to remove it if it happens to be a supporting end. I'm hoping that I can "sister" the treated lumber to the old one with ss screws and rebuild the railing using all new bannisters. Oh, and I've already shoveled out all the mulch and dirt to a good 3" below the wood now.
So, my question: is this approach feasible? Is there anything that I could/should do to the old piece prior to attaching the new wood?
Any tips and advice or even actual instructions, pointers to youtube, etc will be greatly appreciated. Unfortunately as a retired person I can no longer afford to call in the "Big Guns".
Thanks