Originally Posted by DangerMouse
Please elucidate? What problems? (other than the obvious drilling through tiles)
Thanks for helping!
Sorry I didnt elaborate.
You never want to drill into the threshold (or any horizontal surface really) because if water ever gets under the track you just gave it an easy place to get under your tile and cause major problems.
Now, for frameless enclosures there are times where you have to drill into the threshold, for example if a customer wants pivot hinges you need to attache the hinge to the threshold. We would try to stear clear of this if at all possible and if the customer insisted than after the holes where drilled we would squirt some silicone over the hole before putting the screw in it.
Another example for a frameless enclosure would be if a return panel either sitting on a bench, knee wall or going to the floor sometimes you have to drill the tile to attach the channel properly. If it is a small enough panel on a knee wall or bench then you could use the high bond tape and silicone again because the channel screwed to the wall will help tie everything together. Either way still running a nice silicone bead on the inside along the channel and tile as well as channel to glass to not only form a seal but also to hold the structure together.