1) I would not go back with wide boards, use regular 1x4 T&G.
2) pine nowadays is hopeless as an exterior wood, so use a decent material like mahogany if you value the labor at all and don't want to replace it again in 8 years.
Our hardwood dealer stocks 3/4x4" mahogany flooring, but we just rebuilt a 30' front porch with5/4 mahogany that they milled for us.
We have also installed 3/4" Ipe T&G flooring on porches but that's overkill and an unnecessary expense IMO.
hi Guys, thanks for your input. I should have mentioned that the back porch is covered. It is exposed however on 3 sides. I'm sure I'm cheaping out by looking at that pine that I showed you, the only thing is my wife and I want to put in an addition one day where the porch currently is, I would say in 5-7 years.
5-7 years fly by so fast these days, why worry about a couple of rotten planks if the deck is going down?
Some of the planks are borderline for standing on them. Also where the steps are looks like crap. Most importantly, the basement hatch (built into porch) is also dicey.
Just replace the few damaged boards, use treated timber and paint them to match existing decking