My tub is a large fiberglass tub. The front of it reminds me of what you would see around a whirl pool tub. It's flexible. The sides of the tub front that but up against the wall have come apart from the wall, the seal/caulk/ broke. Due to the fact its flexible I'm not sure how to seal it up. You can see its also not sealed where the tub meets the tiled floor. How would you seal up the gap on the side? See picture below.

 

It looks like the tub has sunk. Is the house wood framed? If so I would look for a water leak as there may be structural damage around the tub which is allowing it to move so much.

 

If it sunk, wouldn't that make the edge of the tub that would be at the height of your knee, bow up? The side just won't seal to the wall. Where are you looking for water leak? Under the tub itself?

 

First, please clarify which end is up in your photo.

If one part of the tub sinks it does not mean another will bow up. Usually they just sink. The leakage can come from the surround or water splashed on the floor. It can also come from the faucet or drain.

Houses are built with a mostly solid floor and the tub is placed on top. Water tends to collect and spread out on the floor so a lot can get rotted underneath without being visible. If it is rotted you can usually spot movement when you get in and out of the tub. Have someone look where the edge of the tub meets the wall while you get in and out of the tub. If there's no movement then you may have a simple caulking issue. If the tub moves in relation to the wall then more extensive repairs may be needed.

 

That's sorta what I was thinking and it looks like a caulk line along two sides. It appears the tub has sunk maybe 1/2".

I am curious what the silver gizmo is?

 

Sorry, I can see now where that would get confusing. I didn't think of that. Below are two pictures. My original with me trying to explain, and a different bath tub, not mine, where I show where the picture is taken.

In the second picture (not my actual tub) the black circle is where the picture is taken and the yellow circle is where the problem area is. Where the vertical seem of the tub meets the wall. The tub wall itself there is flexible. Black square is showing the weight scale's placement just for reference.

 

Oh, it's a scale on the floor. Mystery solved.

That front part of the tub should be attached. What's on the other side of that tub wall? Is it a closet where you could cut through the wall and gain access to the back side of the tub skirt?

 

No I wouldn't have access unfortunately. The other side is the guest bathroom. How is it usually attached?

Is there something else I could do?

 

Here in The States normally the tub is installed and the tile run up to the edge of it while in Europe I've seen the wall tiled creating a wet room then the fixtures like the tub are installed inside.

Do you have access to the tub area from below? If not I don't know if there is much other than a syringe to inject an acrylic adhesive or epoxy and try to glue that vanity panel to the wall.

 

I'm in the states too. Just irish

The panel side doesn't really have a big lip that I could see gluing it to the wall. What I was thinking about was using a backer rod and caulking over that. But if its flexible when people step in and out I would think this would just break.

 

You really need something to back up the vanity panel. Caulk just on the outside face is not going to do much to hold it in place.

 

So is there anything I can do if I can't access from the sides? Just leave it as is and try not to get water down there? I'm pretty careful with the shower and that side the shower curtain just stays closed and around the corner of the tub.