On Feb 17, 1:12*pm, Jim K wrote:
On Feb 17, 12:31 pm, Bolted wrote:
But a concrete block wall shattering would not be an issue.

mmm was hoping to avoid battening as they will make the face timber[1]
project too far off the face of the wall, and beyond the slight
overhang of the copings... so brass screws into the block maybe with a
plastic washer or too betwixt wall and timber?

Is this plain planks, weatherboard, clapboard or what? Run
horizontally or vertically?

[1] which timber(s) goes a nice weathered grey colour over time
and appears to not need much maintenance?

I'd use cedar, oak, larch or chestnut ( the first two being more
easily sourced). Any of the tropicals used for eg decking would also
do (and go grey, all timber does with exposure to UV).