Hollow wall anchor fitting through tiled plasterboard wall

10 Dec 2009
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United Kingdom
Ive got a small towel rad to fit on to a hollow plasterboard wall which has been tiled.

the thickness of the wall including tile/adhesive and plasterboard must be around 18-20mm.

I wanted to use hollow wall anchors as these seem like the strongest type and are reusable. however the small teeth on the back of the collar of the wall anchor obviously wont dig into the hard tile face like they normally would on plasterboard so the fixing wont have anything to grip against when tightening it up.

have any of you guys used hollow wall anchors in this kind of situation and how did you manage to fit them?

i was thinking i could potentially counter bore the tile just a bit bigger the than the collar diameter so the fitting sits inside the tile but mounts against the face of the plasterboard.

any other ideas or fixing suggestions that could be used?
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Looks good mate.

I did consider standard plugs of some sort but had a few doubts...

1. because they expand and could crack a tile
2. Because there not holding onto the back of the wall so could pull out. ( not as worried about this as my towel rail is pretty small/light)
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The back expands, behind the plasterboard, not the front.Tiles don’t crack unless you use incorrect size screw or plug .

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