Fence posts anchored in concrete footings last for years as long as they re installed properly.
How to install fence posts on concrete footing.
Using a rented core drill you can drill a hole through your concrete slab for each fence post.
To prevent a post from decaying too quickly as well as to.
After digging a hole in the correct dimensions for the support slide the form tube into the hole and fill it with concrete making sure the concrete mix is properly consolidated to eliminate air pockets and other defects.
Form tubes make it easy to pour concrete support footings for mailboxes fence posts decks and other structures.
When installing a fence on an existing concrete pad some fence installers prefer to core drill through the concrete and set posts the traditional way embedded in concrete underground.
And in areas subject to frost heaves this can be an invitation to trouble down the road.
I understand that it would be difficult to dig holes for a concrete footing for your posts.
Square the j bolt to the footing.
Add concrete and smooth.
If you plan to bury your fence posts in concrete one of the big decisions that confronts you is whether you want to mix your own concrete and if you do which.
The depth of your fence post footings will vary according to fence height wind loading and soil type as well as other factors.
The j bolt can be off just a little you ll position the post base precisely because it s adjustable leave 1 inch of the threads showing above the surface concrete.
But when you fill those v shaped holes with concrete you end up with v shaped hunks of concrete.
Depending where you are located and the soil types you could drive the posts in and still have a stable fence.
A well constructed fence can protect privacy define your property and enhance curb appeal.
For example an 1800mm fence in wind zone a will require footings of a minimum of 600mm deep by 200mm wide whereas the footing dimensions for the same fence in wind zone d will need to be at least 700 1100mm deep by250mm wide.
Novices anticipate no problem in setting fence posts in such holes then filling the holes up with concrete.
This can be done by using markers or stakes that is if the stakes can be driven into the concrete to serve as markers.
If you are in an area with frost in the ground i would encourage you to set them at least 3 feet deep if the soil is stable and compacted.
Let the concrete cure for 48.
How to install fence posts in footing.
Determine where to install the fence posts in the concrete.
Insert the hooked end of a j bolt into the wet concrete at the centre of the footing.