Tempered glass cannot be drilled without having it explosively shatter into many pieces.

UV cured glass glue could work for shelves outside the shower, not inside.

A floor standing/ floor to ceiling pole mounted shower caddy would probably be viable alternatives.

UV cured glass glue could work for shelves outside the shower, not inside.How about this glue? The description claims, it will bond with glass (emphasis mine):

From the ManufacturerSticky Ass Glue, a made in the USA line of products, is a moisture curing, 100-Percent waterproof, 100-Percent solids polyurethane adhesive. It will successfully bond dozens of various substrates including fiberglass, wood, EPS board, aluminum, PVC, steel, plastic, foam, brick, concrete, ceramic, stone, glass, Formica, ABS, cardboard, FRP board, tile, rubber, granite, travertine, dry wall and more.is it to be believed, or just a gimmick? Thank you!

Here is a link that might be useful: Sticky Ass Glue SAG4OZ Waterproof Stubbornly Strong Glue, 4-Ounce

Also, this particular UV-hardening glue has the following tid-bit in its description:Additional Product Information: Strength retention on exposure to moisture or humidity is excellent.Does that mean, it could survive inside the shower, or will the bond break anyway from direct water splashing? Thanks!

Here is a link that might be useful: Loctite Impruv Ultra Violet Adhesive

When I did my bathroom, all the glass fabricators I spoke with recommended against having glued on shelving inside the shower.

The bond will survive for some time. However, since glass shelving is relatively heavy, even if the shelf doesn't shatter, the glass panel could be shatter if the surface is damaged by objects striking it.

However, since glass shelving is relatively heavy, even if the shelf doesn't shatter, the glass panel could be shatter if the surface is damaged by objects striking it.I don't understand... I thought, the concern was, the glues may not hold in a humid environment. Or is it that glass wall itself might shatter because of something being glued to it? Our glass wall is about 1/2" thick âÂ" I doubt, it will crack simply from being hit by a shampoo bottle...

The glue may not hold up. The shelf and whatever else it supports will fall, possibly striking the glass panel.

Tempered glass although highly durable and hard will shatter (often times explosively) once the surface is damaged.

I'm wondering how you would get behind the glass shelf to clean. You would be able to see the water spots that build up behind the shelf from the outside.
I would ask the manufacturer before trying it, just to be safe.
Renee

Pretty much all glass manufacturers that I deal with state not to glue to the glass, however since there in no warranty on tempered monolithic glass go ahead if you want. You come on here ask for opinions, people give you logical reasons and you argue their points, go ahead do it your shower!

You do NOT want to go there. If you need a shelf, it should be on the tile wall. Get one of those shampoo dispensers and use that to organize your stuff. Get a tension pole mounted organizer. Get one of the over the shower head organizers. Just don't try to glue stuff to your glass unless you're willing to buy it all over again after you've cleaned up all of it from every last corner of your bath.

Our glass currently has a number of holes already -- there are handles on both sides of the door, for example, that connect with each other through the glass.

The shower pipe is attached to the glass in another spot -- it goes through the glass and is capped by a chromed cap on the other side.

Also, the glass door's hinges are attached to both the door and the wall by bolts, which go through the glass...

If no reliable glue exists on the market, I may be back to drilling holes. If this is not a safe undertaking, I may consider hiring an insured pro. The procedure does seem complicated :(

Could my glass be somehow "special"? Maybe, it is not really tempered? Or, perhaps, it is not glass, but some kind of transparent plastic? Puzzling...

Milkworkman, it is not at all impolite, when given an opinion, to inquire, what the basis of it is. Nor is there anything inherently wrong with arguing (which I did not even do), much less with asking follow-up questions (which I did). My responses weren't hostile -- but yours is. Please, stop.

Here is a link that might be useful: How to Drill a Hole in Tempered Glass

You have obviously done your homework. It's an interesting experiment. If you decide to go ahead with either option, could you post the results please?

My only experience with tempered glass is from the mosaic forum. where they use the pieces for mosaics. Drilling holes in an expensive shower is a big risk, but if you have the money, I don't see why you shouldn't try it. You could always make a beautiful crash glass mosaic from the pieces!

Renee

Holes in tempered glass are done before the glass is tempered.

Here is a link that might be useful: This! Only a bigger bang

My SIL had a tempered shower door explode while he was showering. Blood amidst millions of pieces of glass was not pretty. No, he wasn't drilling it and we don't know why it exploded.

You need to drill glass before it is tempered. Period.