Our cellar was tanked a number of years ago using a waterproof membrane, and the walls were subsequently plasterboarded/plastered over. I now want to put up some shelves but am unsure how to fix to the walls without compromising the integrity of the waterproof membrane. I know there are special plugs that can be bought for fixing the membrane to the walls, but how do you go about fixing through plasterboard and the membrane?
thanks, Andrew
