"Antique" fence boards

The (diminishing) joys of listed buildings ...

We have a fence in the garden of our listed building home, with standard posts, but boards like I've never seen before. They are 6 feet wide, with straight vertical edges, but variable in height from perhaps 6" to 9". Neither horizontal edge is straight, so they have a very rustic appearance, and they are also tapered like featheredge boarding. They are clearly very old.

Does that make sense to anyone? What are they called? Where could I get them? They are all pretty much past their sell-by date!

I suspect a photo would help ...

Right. That sounds/looks right. Presumably the bark falls off with the passage of time. Rather pricey! But many thanks.

larchlap??

Are you in conservation area ?. Are these in front of the property ?

If YES to both, tread carefully.

it's listed, OP has to tread carefully anyway. Listing includes things in the curtilage.

NT

Nah, kids pick it off ...

I'm not sure why it's pricey - it's cheap for the sawmill to make because it includes the edge of the trunk, they don't have to trim and discard that piece. Unless you're looking at say oak (when it'll be expensive anyway)?

Find a local sawmill who should be able to help. For a randomly selected vendor, this is about 3 quid a meter for example: