Mosiacs on a bathroom floor!!!!!!!

[marc1106]

am quoting on abathroom refit client wants mosiacs on the floor!
sub floor is t&g chip which we are ripping out! gonna do 18mm wbp ply then 6mm hardibacker(or equivelent) gonna have to do the whole floor as clients having a freestanding rolltop bath! tiled many floors but NEVER in mosiacs is there anything i should be aware of!
thanks in advance marc1106.

[doug boardley]

why the hardibacker as well?, not a problem, just seems a bit overkill imo

[Dave]

A lot of joints there doug......plenty moisture ingression........i would deffo go for the hardi marc...but use 22m ply and nog out the joists every 300mm as well...then screw down tot he joists and noggins...flexi spf rapid for sticking the hardi down and to tile with a white spf..unless grey grout then grey adshesive..

The hardi just adds that litte bit extra strength..

[marc1106]

Dont like tiling onto ply! have had to remove to many floors that have rotted! so now i put hardi in aswell, also i think in ten years time when somone replaces it it should make their life a little easier

[Grace'sDad]

Be aware of the grout colour!

I had a customer in Dec who wanted white floor grout.
Floor grout turned out fractionally darker than white wall grout.
Resulted in 2 lost days and non payment of £175.

She was a truly beautiful human being to rob me like that on Xmas eve.
She even had the nerve to ask what I was getting my girls for Xmas. I said not a lot now seeing as I am so out pocket!

[marc1106]

A lot of joints there doug......plenty moisture ingression........i would deffo go for the hardi marc...but use 22m ply and nog out the joists every 300mm as well...then screw down tot he joists and noggins...flexi spf rapid for sticking the hardi down and to tile with a white spf..unless grey grout then grey adshesive..

The hardi just adds that litte bit extra strength..

I usually just screw the backerboard @150mm intervals when going over ply then use flexi to stick the tiles! SHOULD i be sticking the backer down with addy( and why) then dave?!

[marc1106]

Be aware of the grout colour!

I had a customer in Dec who wanted white floor grout.
Floor grout turned out fractionally darker than white wall grout.
Resulted in 2 lost days and non payment of £175.

She was a truly beautiful human being to rob me like that on Xmas eve.
She even had the nerve to ask what I was getting my girls for Xmas. I said not a lot now seeing as I am so out pocket!

as they are mosiacs could i not get away with BAL microflex on the floor aswell as the walls, because the grout lines would only be thin due to the sheets?

[Grace'sDad]

as they are mosiacs could i not get away with BAL microflex on the floor aswell as the walls, because the grout lines would only be thin due to the sheets?

BAL eventually admitted that YES I could use microflex on the floor, and that they would guaranteee it, as long as it was a light-traffic area, used 18mm ply or 10mm hardibacker, and used GT1 diluted 1:1 with water.

The first time I asked this they said NO which is why I got so flipped off with them. Tech help said to use Microcolour wide joint grout "brilliant white" to go with the brilliant white microflex on the walls. Only it was more a "dirty grey"!

--Use microflex with GT1, you'll be fine-- all white floor grout will end up grey anyway in my opinion, due to wear and tear etc.

[R Montgomery]

Be aware of the grout colour!

I had a customer in Dec who wanted white floor grout.
Floor grout turned out fractionally darker than white wall grout.
Resulted in 2 lost days and non payment of £175.

She was a truly beautiful human being to rob me like that on Xmas eve.
She even had the nerve to ask what I was getting my girls for Xmas. I said not a lot now seeing as I am so out pocket!

But that's crazy.White sanded grout isn't as white as unsanded so it's common for the floor grout to be darker than the walls.But you get the last laugh.White grout on the floor ha.Hope they have a maid.

[Dave]

I usually just screw the backerboard @150mm intervals when going over ply then use flexi to stick the tiles! SHOULD i be sticking the backer down with addy( and why) then dave?!

It adds strength to the installation of the hardi....

here is a pdf on it marc..



https://www.pureadhesion.co.uk/store...structions.pdf

[marc1106]

okey doky DAVE thats the way forward from now on! But i do have to say ive not had any issues so far doing it the way i have been! (TOUCH WOOD)

[Grace'sDad]

Hope they have a maid.

I hope she slips on the wet floor, cracks her head open on the bath edge and stains the grout with her blood!

(I'm really not bitter)

[doug boardley]

A lot of joints there doug......plenty moisture ingression........i would deffo go for the hardi marc...but use 22m ply and nog out the joists every 300mm as well...then screw down tot he joists and noggins...flexi spf rapid for sticking the hardi down and to tile with a white spf..unless grey grout then grey adshesive..

The hardi just adds that litte bit extra strength..

oh yes, it's a mosaic floor! lost the thread title halfway thro' (boys distracted me!) apologies!