I put up one of those floating shelves which took 5 screws. It went on to a brick / plaster external wall. The rawlplugs said to use 7mm for the hole but I used a 6mm drill knowing the drill would probably wander slightly.
3 of the Rawlplugs don't seem to be catching at all and the screws just turn when they should be getting tight. I tried upping the screws to size 12 but its just the same. I'm beginning to think I never went into the brick but into the gaps between the bricks!I'm not sure if I could get the rawlplugs out without digging into the wall which I'm reluctant to do as its just been all decorated. Also I can't move the shelf as its the only wall / height it can be it.
Any ideas on best way to get the screws to take?
Cheers
Steven.