I wouldn't trust any adhesive. It might hold the rack to the tile, but
the adhesive/thinset holding the tile to the wall might give up the
ghost. Too many mights. For long term longevity I'd want screws or
toggles. There're no mounting holes/plates for mechanical fasteners?
Like I said, I wouldn't trust any adhesive for the long term.
Does the base have ~1/4" shoulders on the base of each standout? Or
possibly have a wider section about ~1/4" out from the very back end of
each standout? If so you might have a towel bar that is intended to
be installed in a recessed area of tile. The tile supports the edge of
the standout and provides far more strength as you're not relying on
the adhesive for the shear strength. If so, that type of towel bar
should have been installed when the tile was installed, or the tile cut
to receive it.
Post a link to a picture or a web site that shows what you have.
The antiqued finish wraps around the sides of the base, so it seems
that that is meant to be visible. It could be inset into a cutout tile
recess, but it wasn't designed that it must be that way. It looks like
you tried silicone and it didn't work - not too surprising.
BobK's advice is sound (don't tell him I said so, his head will swell).
Using mechanical fasteners is much more work, but really the only way
to do it and forget about it.
If I had to use an adhesive and was confident of the tile bond to the
backerboard, I'd use 3M 5200 http://tinyurl.com/a9z56 . It's a slow
setting adhesive that is super tenacious. It sets up in two days and
takes a week to come to full strength, so you'd have to tape the pieces
you're attaching to the tile with some fiberglass strapping tape
(doesn't stretch) and be patient. Of course the strength of the towel
rack will be dependent on the weakest link, which very well may be the
How about a picture of the rack?
(or link to mfr site )
Is the tile install "old school", set in a heavy concrete mortar bed or
just glued to the paper on green board?
I'd drill (rotary hammer) a 1/4" diameter hole into the back of the
then I'd either
1) set a 1/4" stud in the tile / mortar w/ epoxy (SIKA AnchorFix fast
2) use a toggle & jam nut to set a sud in the wall
With a stud now protruding from the wall, I'd AnchorFix the drilled
rack base to the stud.
Use the fast set AnchorFix & it's gelled hard in ~5 minutes & fully
cured in ~1hr @70F
adhesive alone would make me nervous unless this thing it to small to
damaged the floor or someone's foot when it falls. I've had too many
adhesive only face bonds fail.
Silicone seal MIGHT work if allowed to cured un-weighted for about a
week but it would depend on the size of the base relative to rack
wieght & payload..
AnchorFix alone would glue the rack base to the tile but will the tile
hold to the wall?
Plus "belt & suspenders" is always good, consider the cost of failure.
I don't know anything about your wainscot procelain tile or how it's mounted
but I just put two "soap dish" shelves in the corners of my tub surround.
The tile was already in place (did not cut the tile before install) so I
used a dremel #545 diamond wheel to cut a slot for the shelf in the tile.
Once the outline was cut, I carefully pried out the pieces (don't use the
good side of tile for leverage) to reveal the greenboard underneath. I
removed as much old tile adhesive as possible and cleaned out the dirt and
dust, then set the stone shelves in with 'liquid nails'. Next I plan to put
grout on top of that.
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