Was asked to fit a couple of IKEA LACK shelves - the floating kind of
shelf with hidden fixings. Anyways it seems that these no longer come
with any fixings - the instructions just exhort one to consult your
The shelves have a keyhole that slots over an exposed screw head. In
solid walls this is fine - you just tighten the screws up until the
right amount of shaft is exposed and drop the shelf over them.
Fixing to plasterboard is another problem. Most plasterboard fixings
rely on the screw being tightened to clamp the fixing from behind. This
is not feasible as the screw needs to be left protruding.
The only type of fixings that I have used that do not do this are the
little die-cast screws with a large thread that screw into the wall
first and then screw the actual screw into them.
I am not convinced though that these will not pull through with the
forces placed by the shelf. There is nothing behind the plasterboard to
spread the load.
I there any fixings that I have missed that combine something behind the
plasterboard to spread the load with the ability to hold fast when the
screw is not fully tightened?