Laying mosaics over a wet room former

[James De]

hello,

So I’ve been reading a few posts on here about laying mosaics, can’t seem to find anything for wetroom formers that already have the fall built in.

Can anyone give me a few tips to laying mosaics over a wetroom firmer please? Area is around 2.5m2 and custard hasn’t chosen mosaics yet so unsure of the size of tiles.

Thanks in advance
Jay

 

[Kyle Knowles]

Is it a foam tray or resin?

 

[James De]

Is it a foam tray or resin?

Resin with a membrane layer

 

[James De]

So the custard has bought quartz 30x30 mosaics (need sealing). I’d really appreciate some help on this as I’m laying them tomorrow

 

[Kyle Knowles]

What exactly is troubling u about this tray with mosaics?

 

[Kyle Knowles]

Stating the obvious use a trowel with a notch big enough to get a good hold but not to big to bleed through and use a suitable adhesive I've bin using kerakoll no limit recently it's really nice to use

 

[Kyle Knowles]

Other than that mosaic on a former is pretty straightforward?

 

[James De]

What exactly is troubling u about this tray with mosaics?

I’ve never laid mosaics before

 

[James De]

Other than that mosaic on a former is pretty straightforward?

I’m new to tiling btw

 

[Kyle Knowles]

Oh sorry this thred had me confused lol
Just dry lay the tiles first ur best going on YouTube search sal diblasi he's very good u just have to be careful America has different standard and requirements then Britain but his workmanship is top notch and videos are very informative I watch all his stuff

 

[Dumbo]

Check with the tray manufacturer that they are happy with the point loading of a 30 x 30 .

 

[James De]

Check with the tray manufacturer that they are happy with the point loading of a 30 x 30 .

There is no mention of limitations in any of the literature that came with the kit.. but I’ll give them a shout

 

[Qwerty]

There is no mention of limitations in any of the literature that came with the kit.. but I’ll give them a shout

Is this still the impey former? If so youre fine

 

[James De]

Is this still the impey former? If so youre fine

It is, yes.. cheers mate

 

[James De]

The mosaics are 5mm thick.. 3mm trowel?

 

[Old Mod]

4mm or worn 4mm trowel.
I’m assuming they’re meshed backed?
Don’t try to wet cut them, you’ll get mesh wet and they’ll become misshapen.
Always pull mosaic sheets toward you when laying, don’t try to push, they’ll distort.
For example, trowel an area of your former, then suspend the sheet from your hands and gently drop the hanging side into the adhesive furthest away from you, then as you lower it, the side in your hands comes toward you as you lay it down. Make sense?
Then you can tamp it down with a rubber grout float until all pieces lay flat and even.
It’s not fast work, take your time and don’t rush.
You may be better served dry laying the whole tray first and then take it up a bit at a time, trowel the area then relay.
That’s certainly how I do it when I feel it could run out easily.
I dry laid this before fixing.

 

[James De]

4mm or worn 4mm trowel.
I’m assuming they’re meshed backed?
Don’t try to wet cut them, you’ll get mesh wet and they’ll become misshapen.
Always pull mosaic sheets toward you when laying, don’t try to push, they’ll distort.
For example, trowel an area of your former, then suspend the sheet from your hands and gently drop the hanging side into the adhesive furthest away from you, then as you lower it, the side in your hands comes toward you as you lay it down. Make sense?
Then you can tamp it down with a rubber grout float until all pieces lay flat and even.
It’s not fast work, take your time and don’t rush.
You may be better served dry laying the whole tray first and then take it up a bit at a time, trowel the area then relay.
That’s certainly how I do it when I feel it could run out easily.
I dry laid this before fixing.

View attachment 102396 View attachment 102397

Yup, crystal clear.
The only pieces I really need to cut is around the waste which I’ll cut off the mesh and wet saw individually. I should get a clear run of 3x4 grid of mosaic 30cm sheets.
I’m def going to dry lay them first as I need to seal them so will seal them after dry laying them and then fix them down.
Thanks so much for the advice ... feel like I can breathe again