[rfuerst911sc]

My suggestion is to pull up some deck boards randomly to see what the frame/structure looks like . If the structure is crapple you need to fix that first . I like 5/4 PT deck boards and the supply chain is starting to recover . But like any exterior wood you can't just install it and forget about it .

It doesn't look like the wood in your pics has been maintained . Depending on sun and weather exposure you need to hit it with stain or clear preservative every 2-3 years . If you are not willing to do that then maybe a Trex type product is better for you . But the plastic boards have their own issues .