How can we put a fence above an old stone wall with solid foundations?
The wall is 400 yrs old and we can't really attach the posts to it. We started to dig holes for 5 posts but about 1/1.5 ft down is a stone foundation which we presume is also acting as a level for the wall as the ground is sloped. It comes out 10" into the flower bed and to put the posts further in would eat into the garden and look really odd. The wall is waist height and the fence has to be 1m above the wall (slats starting above the wall) to take the overall height to 2m so it's going to be top heavy.
We have come up with the following ideas but would appreciate any advice/input:
- take a pneumatic drill to the foundations to create deeper holes
- Use the holes we have as they are and add angled supports out into the ground
- Sink planters into concrete in the existing holes and concrete the fence posts into these
* An updated option is to bolt metal fence feet to the foundations, secure the posts into the feet then concrete over the whole lot
That's about it but surely this is something that has happened before?