if the posts have exposed wood that contacts the ground below the vinyl, i would put each post in a heavy duty plastic bag that will come to the surface of the ground, pour your concrete, let it set good, then cut the plastic off at ground level. you will add several years to the life of the post by insulating it from the concrete. you won't notice it, but your post will thank you. the chemicals in the concrete will leech into the wood even though it's treated. you might also consider placing a bit of gravel in the posthole under the post.keeps the post's feet a lot dryer.
dw
--- In DoIt_Yourself@yahoogroups.com, "Sandaidh" <sandaidh@...> wrote:
>
> From: snaffles@...
> We are hoping to put in a 3 rail vinyl fence later
> this fall. We purchased it 3 years ago used and
> needed the extra time and money for gravel to set the
> posts.
>
> Did you set your post in cement, gravel or dirt?
> ---------------------------
>
> They're set in a combination of dirt and cement. Dirt around the outside of
> the post, filling in the hole; and the cement INSIDE the hollow post only.
> That's been a concept hard to get across to others, but which was very
> appealing to me given the proximity to the gas line. It also meant being
> able to dig smaller diameter holes.
>
> The post leveler makes it possible for one person to set the posts, and a
> whole lot easier for two. Having it strapped onto the post is much better
> than trying to hold the post still while moving a traditional level from one
> side to the other, and then back and forth, trying to keep everything still.
> Definitely a good investment.
>
>
> Sandaidh
> sandaidh@...
>
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