Fencing - Fixing Cant Rail to Fence Post

[ambercelery]

hi

I have just purchased all the material required for a 1.8m featheredge fence. I will be using cant rails rather than arris rails.

The cant rails are 47mm thick and need to be screwed into 100mm fence posts.

What screws should i use for this? I was told by someone to use coach bolts but am thinking that the featheredge wont sit right over the section where the coach bolts are - as they arent countersunk.

I've also seem Timberfix Exterior wood screws (Timberfix® Plus Exterior Timber Screws 6.3 x 100mm Pk50) that are meant to be good for joists and fencing.

Or can i just use any coutnersunk external wood screw?

 

[Deluks]

Fix the cant rails to the inside of the fenced area, attach the featheredge to the outside area, so the slats are sitting between the fence posts themselves. Then you will miss the coach bolts (which is the preferred option to screws)

M10 will suffice. Use big washers and nyloc locking bolts.

 

[ambercelery]

Sounds like a good idea.
But, I dont think my neighbour will like that though (it is her fence I am replacing for her) and she wants to have the posts on the boundary and then the cant rail and featheredge on my side of the boundary like the existing one.

 

[Deluks]

Use a flat wood drill bit slightly larger than the coach bolt nuts and drill where the bolts will go through, Then use a socket to tighten the bolts in the recess.
or if doing the other way round recess just enough that the coach bolt head sits flush with the surface of the rail.

If you haven't got a socket set then you may be able to use an adjustable spanner held end on, like a screwdriver.

Important: drill the wider recessed hole before going all the way through the rail with a smaller drill bit the same size as the coach bolt thread.

You might have to cut off any excess thread, grinder/bolt cutters/hacksaw.