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.
The corner end and gate.
If some oozes out no big deal you can clean it up later.
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.
Having concrete as the foundation of your vinyl fence posts creates a firm base that won t move and minimizes the posts moving.
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.
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.
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.
Eighteen inches is not deep enough.
Typically 1 4 to 1 3 of the post should be underground.
The ground is always settling and moving.
The result is an extremely solid concrete post that extends from below the frostline to 2 feet above grade.
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.
Any screws driven through the pvc become embedded in concrete and the rebar ties the two pours together.
Http expertsmadeeasy how to become an internet marketing expert but now easily remove broken vinyl fence posts and the concrete too then install ne.
Dig the tripod ends into seperate holes with concrete bolt or clamp all to the pole so that you end up with three additional.
You might consider some 1 angle bar or 1 2 rebar to make a tripod.
Using concrete in the foundation point will allow consistency for all of the vinyl fence posts.
And concrete and masonry.
Concrete is the foundation of the fence.
After the sections are assembled and plumb fill the post with concrete mix.
Fill that post hole with concrete.
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.