Hi,
I've got a 200mm wide fake beser block wall built with rendered blue board on my property line.
I'd like to add something to increase the height by about 300mm so my neighbors and I can't wave to each other from our windows.
I've bolted plastic privacy screens on beser block walls elsewhere but don't want drill any holes which might leak.
Thinking about putting some empty planter boxes on top or planters on ground with high trellis attached.
Any other ideas greatly appreciated!
Thanks