Is there any reason not to use (a) adhesives with 'nails' in their names and (b) expanding foam in contact with PVC mains cables?
I have a bundle of cables (all correctly derated, before you ask!) that need to be chased into a wall, but the brick is so crumbly, I can't install cable clips, as the brick disintegrates at the thought of a drill bit, let alone a cable clip nail. I just want to glue, squirty fill and plaster over the top of the channel.
Christian.