1m feather edged fence on top of existing wall

[Moonshine]

I have an existing wall which is about 15m long and .8m high.

 

I want to put a fence long the top of the wall to make it 1.8m high, so it will be  a 1m high feathered edge, using with 150mm feathered planks.

 

Based on the wall (blockwork laid flat) it's going to be best to bolt the fence uprights to one side of the wall, and have the horizontal pieces and boards just on the top leaving the majority of the wall seen from the other side.

 

Like this (viewed from my side) but with feathered boards

 

 

The main questions I have are....

 

- what sized uprights should be used 50x50mm or 75x75mm?

- what spacing should the uprights be?

- how long a section of upright should be bolted to the wall?

- what bolts should be used to fix the uprights to the wall, and how many fixings per upright?

[Declan52]

I would use treated 4*2 and bolts at least 150mm so they are in the wall 100mm min. 3 should be plenty for each post. If the blocks arent a crumbly mess then thunder bolts would do.

[Ferdinand]

There seem to be 2 of these threads.

[Ferdinand]

If it is a very windy area. I might make it a little permeable.

[Declan52]

2 minutes ago, Ferdinand said:

There seem to be 2 of these threads.

Sorted.

[Temp]

+1

Either 4x2 or 3x3 (75mm) would work.  If you want vertical feather edged boards use "cant rails" fixed to the wall side of the posts then the feather edge nailed to the cant rails.

Edited September 12, 2020 by Temp