Shower tray made of GFRP - floor is springy

Hello,

my bathtub and my shower tray are made of GRP. While the bathtub seems quite stable in itself, I see it differently with the shower tray...

My shower tray is raised about 15cm from the screed. Accordingly, it has support feet that also stand firmly on the floor. I have also well built in the edges.

BUT

in the middle part of the shower tray, the floor partly "springs." You can tell that the shower tray floor is not firmly connected to the floor in a force-locked manner.

Now I wonder if this is normal or not?
How is it for you, that is, for those whose shower tray also does not completely rest on the screed?

...in the middle part of the shower tray the floor "springs" partially. You can tell that the shower tray floor is not force-fit connected to the ground.

Now I wonder if this is normal or not?
How is it for you, that is for those whose shower tray also does not lie completely on the screed?

Our shower tray also stands on feet, but also feet that "support" the middle of the tray.

Every manufacturer uses a different support frame; insofar, and if the support frame and shower tray fit together, I wouldn’t worry in your place.

Rhenish greetings

The feet, etc., I think everything is correct there. I’m just surprised that something like this is actually common? Does your shower tray also have some give? The give in mine is very slight, I can’t really say how many mm or whatever. In the middle, where the middle foot is, there is no give, only around it you can feel that there is a hollow space underneath.

The feet etc., I think everything is correct there. I just wonder if something like that is actually common? Do your shower trays also have some suspension?

I'm not one of the strongest, but I notice no "suspension" at all and I—good 80 kg—have never said a word about it.

Rhine greetings