ekoreilly,

Your existing 4x4 posts are probably carriage bolted throught the deck framing below the flooring. If thats the case they are probably very strong and I'd sleeve them with 1 x 6 cedar attached with construction adhesive and on the top shim them level. Cap them.

After that you can use any type of rail you want.

The link showint a way to mount new posts I think is poor.

If you'd like to email me to discuss further, please feel free to do so.

All the best,

The Porchguy

Here is a link that might be useful: My Album

Hey porchguy, things slowing down for you? So sleving them is better? ANything wrong with using cedat 1x6? should I miter the corner on those or butt up flat?

Any suggestion on the cap rail? My plan is to go flat across but on the corners I want to do caps (that would be 5 out of the 7 posts) with lights. I see eastteak has some nice rails.

anyone have suggestions for a top rail cap? I will be using 2x4 (sideways) for the sub rails with metal balusters.