Mira Shower trays good name indeed.

I was told cutting the wall away is a no-no. When the silicone fails the water is straight in behind the tile board / wedi board (although noted you have a second bead - most are recommending seals or tanking with those cloth strip things) ? Also doesn't it increase the likelihood of the enclosure not fitting - as your tray is effectively smaller. The question I wanted to ask though is - do you 2nd silicone to the tiles before or after installing the enclosure as this wasn't clear at the end.

This is the first video I’ve seen recommending the need to “remove the lower wall material”. I wonder if using an appropriate seal would be better and less hassle?

Cutting the wall material out is good, as it enables a better seal to be made. I noticed that they didn't show how to fit the waste without the riser kit. Presumably you have to cut a hole in the floor adjacent to the shower, or in the ceiling below and make good! I thought they could have done better than that, so probably not for me.

I get that a bed of mortar or silicon can be used to secure the shower tray to the floor, but what if a shower riser is being used? Do we have to somehow fix the feet to the floor to prevent the tray from moving?

May I ask you a question . My shower is this mira shower drains , however it’s a trouble problem . I can’t buy a fit hair stopper , nothing can fit this shower drain , and this shower drain originally can’t stop all the hair , what should I do🥹🥹

You don't make a 1300 x 700mm tray.

Stopped watching when the installer removed the wall board and inserted the tray, this is a massive no no and will result in total failure, the tile is the over lap. The tray should be fitted to the wall board then siliconed. Once tiled the tray should be siliconed again between the tile and the tray. Ok so i watched some more never ever ever silicone a tray to floor it gives no support whatsoever and the tray will almost certainly crack. Mira are you really putting your name to this installation video.

Can this be fitted on top of tiled floor with silicone ?

These things are hopeless because the lip isn't flush with the shower tray so there's basically a permanent moat around it that doesn't drain. Whenever you've been to the beach this fills up with sand so you end up with a visible grubby ring of sand and other dirt sitting permanently around your waste. With our old shower sand and mud used to just easily wash straight down the drain, but with this useless thing you have to get down on your knees and swish it all out with an old toothbrush every time. Pathetic design. Also it's impossible to get the shiny plastic cap back on unless again you're grovelling on your knees with your head on the wet shower tray to see under it and it feels extremely flimsy. Disappointing.

@1a01as0