Use electrician s or plumber s putty for plugging by rolling it into long strips and wrapping the bottom of the post and concrete pad filling the crack.
Filing inside vinyl posts with concrete.
I did a little research and on this subject and surprisingly there are a couple websites where this question has been asked with varying answers.
Http expertsmadeeasy how to become an internet marketing expert but now easily remove broken vinyl fence posts and the concrete too then install ne.
Any screws driven through the pvc become embedded in concrete and the rebar ties the two pours together.
You might consider some 1 angle bar or 1 2 rebar to make a tripod.
When installing vinyl fence generally a bed of 3 6 inches of gravel is placed in the hole and the post concreted in at the proper depth for the frost line.
Fill that post hole with concrete.
After the sections are assembled and plumb fill the post with concrete mix.
The ground is always settling and moving.
Typically 1 4 to 1 3 of the post should be underground.
If you set your posts at 34 36 inches deep which is very common in this area you would need about a 1 3 wheel barrow of cement to make the height half way up the post.
Composite wood is okay but its usually attached to regular wood.
When you re building a deck a fence a pole building or whatever everyone thinks that the hole must be filled with concrete.
The hollow pvc posts act as forms as i fill them with concrete though it s not necessary to fill them all the way to the top.
Concrete is the foundation of the fence.
Using concrete in the foundation point will allow consistency for all of the vinyl fence posts.
Strengthen vinyl posts you ve got a couple options for the cheaper option you could fill it up with concrete and rebar i wouldn t couch for this because i ve seen vinyl posts crack because expansion of cement or you could get something called a post stiffner.
Vinyl is okay but once its damaged by anything like those high winds we have had lately its done you have to replace the whole panel.
In premix assuming that is what you were going to use you are probably closing in on 1 full bag if not a little more.
And concrete and masonry.
Dig the tripod ends into seperate holes with concrete bolt or clamp all to the pole so that you end up with three additional.
If some oozes out no big deal you can clean it up later.
The result is an extremely solid concrete post that extends from below the frostline to 2 feet above grade.