My sister wants me to put a new fence in at her house. I have decided to go with closeboard fencing. I will need 4 posts and there will be 3 sections of closeboard fencing in between.
The garden already has a boundary fence which is owned by the council and so cannot be taken down and the neighbour on the otherside does not want it down. So looking at it I think the easiest thing to do will be just to get my posts and bolt them on to the existing concrete posts - this will probably be more secure than using the spikes in the ground.
Here are some pictures.
![Image](http://s8.postimage.org/auphhkhhd/WP_000098.jpg)
![Image](http://s8.postimage.org/fhvjjc4u9/WP_000100.jpg)
![Image](http://s8.postimage.org/lwukg0bk1/WP_000102.jpg)
![Image](http://s8.postimage.org/c0thgd5s1/WP_000103.jpg)
I am intending to use 10cm by 10cm wooden posts.
My questions are
a) do you think 3 bolts per post into the concrete posts will be secure enough? Oviously half of the post (i.e top half) will have no uspport but this is no different to a post that has been spiked into the ground which oly has support at the bottom.
b) should I put in the spikes for good measures? They might add some support to the bottom but I am not sure they would actually add anything over the bolts.
c) I wasn't going to bother with gravel boards, maybe just have the featherboards just off the ground - what do you think?
d) anyone recommend the best store to buy the relevant bolts? I am not exactly sure what I needbut I know they exist.
e) any value in having the posts not touching the ground so they don't rot? But again I will loose support as the weight will all be held by the concrete posts.