movement in newly installed showertray

[Meita]

This is probably a silly question, but anyhow: Am I right in assuming that our new showertray is not correctly installed, given that it moves slightly up and down when standing on it? This is only (or only noticeable) at one place, but it will create strain on the sealant (you can see the sealant being stretched), and in no long time at all, there will be leaks, right?

It's a Matki New Continental 30 tray.

Thanks in advance!

 

[kbdiy]

Basically it shouldn't move. Any movement will inevitably cause leaks.

 

[polesapart]

+1

No movement whatsoever even with a heavy person or two jumping up and down.

 

[Meita]

Thanks both.

I have now spoken to Matki and they unsurprisingly said the same as you both.

I don't suppose there is any easy way of fixing this problem? I guess we're looking at removing the whole tray (incl. the tiles all around) and doing it all again from scratch... arrgh I suppose we'll need to get a new tray too?
Or could we perhaps get at it from below? We'd need to rip up the ceiling in the bathroom underneath, but that might be less trouble overall?

 

[danplumb]

Who installed it ? Get them back and get them to cover any costs or work involved making the job right.

 

[Meita]

It was a plumber, instructed by our builder. I was a bit worried already when it had gone down: Although I am not much of a DIYer (just the odd bits here and there) I CAN read instructions and the instructions for the tray stated that it should be laid on a bed of cement (IIRC). Plumber said he had used an 'adhesive' instead. However he said he had double-checked with Matki and it was supposedly ok.

Yes, I confronted our builder with it this morning. His reply was that 'they often get customers worried about this, but it is normal actually to have a little 'give'. We should double-check with the plumber when he comes back on Wednesday, but he is sure it will be fine'.

I am thinking he just wants to avoid the trouble...

 

[sooey]

Tell the builder you want zero movement and it's his job to sort it out with the plumber, not yours. And if his plumber can't do that right you'll get someone else in who can, and take it out of his money.

 

[Meita]

Yep, I guess that's what we'll do. I'm just a bit frumpy because I was starting to be excited about our shiny new shower room, but looks like there is still a little stretch to go.

 

[pampers]

some matki trays are very good some are bloody awfull things that flex badly when on legs, if its been bedded down directly to the floor and it flexes probably tray has some ridges on it and will have to come up.
if its on a support stolage you may be able to do something in place but couldt really tell over internet.

Adhesive is listed by many tray makers as suitable bedding material and supplied with some trays so just cause hes used mastic doesn't make him some sort of cowboy instantly.
Some trays are so ridged and have such cast marks on back that's bedding some times has to be really thick to get over there shoddy construction.

 

[CBF]

one of the reasons i never fit anything other than a stone resin tray

 

[Meita]

Thanks again for all the helpful replies. Pampers, I didn't mean to imply the plumber was some sort of cowboy, just wanted to say that I was worried from early on. In fact, the problem may well be down to someone else.

The Matki New Continental 30 is apparently quite new - we found hardly any reviews or experiences of it. It's only 30mm thick and as it is installed now, it's actually a little lower than the tiles (2-3mm). Wouldn't mind at all if it were to come a little bit higher up due to more bedding.

Anyway, thanks all - I think I understand better what's going on now.