ᐅ Walk-in shower completed and issue with waterproofing

Created on: 29 May 2017 06:59
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abc12345
Hello everyone.
I am new to the forum but have already read a lot here regarding our major renovation.

About our problem.
A walk-in shower was installed. I should mention right away that it was done not by me but by my uncle, who is actually a trained tile setter.
I was not always present during the construction work.
The shower was tiled after all the preliminary work, with the appropriate slope. So far, so good. I have now laid the flooring in the rest of the bathroom (vinyl), assembled and installed the shower enclosure, etc. Now I wanted to finish by applying sanitary silicone sealant to the shower, and that’s when I noticed a big problem that my uncle just shrugged off.
At the start of the shower, the floor (tile and vinyl covering) is level. That’s fine, however, the slope was made only in one direction and as a result, I now have a wedge at the edge that is not covered by anything. At the lowest point, it is 2cm (0.8 inches).
What can I do here to make the whole area watertight?

Unfortunately, I don’t have any pictures at the moment because I am on my honeymoon. However, I found a picture from when the tiling was done.
The slope is marked in red. Everything without tiles already has vinyl flooring installed, and the shower enclosure is also mounted and resting on the vinyl.

I hope you can help me with this problem.

Thank you in advance for your help.

Best regards

EDIT
I just noticed the image didn’t upload correctly. The internet here is excellent... not ^^
I hope you still understand what I mean.
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Nordlys
2 Jun 2017 13:07
Which other product? What is it called? If you got MS polymer for eight euros, congratulations, then I’d like to know which one, especially as a sailor with a boat. This stuff is definitely not harder to work with than any other cartridge adhesive and sealant. Wear disposable gloves, the medical kind. Smooth out a lumpy joint with dish soap and water, lots of dish soap. Give it a bit more time to cure than you usually would with silicone. It also cures with humidity in the air, just more slowly.
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Nordlys
2 Jun 2017 13:20
And of course, regular construction adhesives also hold. But my point was that it should be durable, waterproof for 100 years.
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abc12345
4 Jun 2017 10:36
At least it was listed as MS polymer on Amazon at that price. It was also the only option, so I assume that's what it is.

I think I will have renovated the bathroom long before it turns 100 years old.

So basically, regular construction adhesive from the hardware store will work, and then just seal the joints with silicone or acrylic?
I actually still have both of those at home.

I hope the skirting board will work like that.
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Nordlys
4 Jun 2017 13:36
I would not seal the gap around vinyl tiles with silicone, and definitely not with acrylic. Neither product would adhere strongly enough for this purpose. Acrylic can be used in the corners of drywall panels, where it stays dry and can handle slight movement. Silicone is at least very water-resistant but does not really provide a strong bond. The MS polymer is water-resistant, very highly adhesive, and also very elastic.

Look at the picture. These are solid teak strips, glued onto the deck and then sealed. It doesn't have to be black; I just thought it looked nice here. The photo is from autumn 2014. Despite sun, rain, salt, and foot traffic, everything has remained tight up to now. I did it myself. I’m a bit proud of that. Smile Karsten
Boat cockpit with Raymarine instruments and wooden deck
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abc12345
4 Jun 2017 14:48
Okay, the main issue is that I can only find the polymer in black and not in any other color. Ideally, I would need a basalt gray or, if gray is not available, then clear. Anything else would visually stand out and ruin the overall appearance :/
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Nordlys
4 Jun 2017 22:56
Just Google pantera ms 3000 gray.
You’ll find plenty of results. Karsten