Just a set of dumb questions, since this seems like a simple solution.
I repaired a section of porch railing two years ago. It seems that a
spacing block (untreated/painted) left in after home construction
wicked water up(from poured concret pad) and rotted.
Today, I found a bubble in the paint and I touched it. It was hollow,
and as I pushed I went into the wood. It seems that section of porch
is exposed to a lot of rain, and dries out slowly. Now my question,
since I have to once again replace the decayed parts to prevent
further damage, will ordinary 'treated lumber' work well? Or should I
be looking for a special lumber highly rott resistant, if such a thing