Fence panels into concrete posts

[coolinshot]

Hi - I am having to replace a wall down one side of the garden that "blew" down during the recent high gales in north wales. I have decided to go with concrete posts and vetical timber panels. I have erected quite a few fences using timber posts which are pretty straight forward but never concrete posts.
THE QUESTION: what gap would you recommend to allow for expansion at each side of the panels. I was thinking of using 5mm strip packers at each end of the fence panels giving 10mm in all - is this too much to allow.
I appreciate your responses
Col

 

[masona]

The concrete gravel board are 10mm wider than the fence panel, so yes 10mm or less would be okay for the concrete slotted post. In the high wind area I fit panel like these to allow air flow to prevent blowing out !

 

[coolinshot]

thanks for that - I didn't realise the gravel boards were wider so that's solved my problem.
Thanks again - Col