A load of questions... - TilersForums.co.uk | Tile Forums

zzr-matt · 10-11-2007

My bathroom is now finally ready for tiling!

The wall tiles are 230 x 400mm ceramic and the floor tiles are 300 x 300 ceramic.

There are a variety of surfaces and I have had the following recommendations for adhesives etc:

Walls which I've stripped back to bare plaster because they were painted with emulsion or had old tile adhesive on them. Prime with Mapei Primer G then use Mapei Keraflex Maxi

Boxing made of 9mm ply screwd to framework at 200mm centres. Mapei Keraflex Maxi.

Boxing in the shower area made of aquapanel screwed at 300mm centres. Tank with Mapegum WPS followed by Keraflex Maxi

Flooring is 18mm chipboard overlayed with 12mm ply screwed at 150mm centres. Consider tanking with Mapegum WPS Mapei Keraquick with Latex plus addative.

Does this all sound ok?

What size trowel shall I use for the floor and walls?

tiler tom · 10-11-2007

6mm notched trowel walls/10mm notched floors.

myhometiling · 10-11-2007

welcome 2 the forums
u have done ur home work
i would use a 12mm rounded tlowel on floor with flexi adhesive

calvy..

charlie1 · 11-11-2007

use 10mm floor trowel for wall aswell as you are using large format liles on wall. this will ensure 100% coverage on back of tile. do not use tub adhesive when using floor trowel, mix up some SPF, tub gear wont dry out quick enough.

versatilene · 11-11-2007

Your'e doing great by yourself, sounds like your as qualified now as most of us.

zzr-matt · 11-11-2007

Cheers for the replies guys

So if I use a trowel with 10mm x 10mm notches with a 10mm spacing for the floor and wall then I wont go far wrong?

How much of the previous tile residue do I need to remove? At the moment its stripped back but you can see some areas have a smidge of the previous adhesive left. I'd say its around 0.5mm thick or so? Worth stripping that off too?

**GazTech** · 11-11-2007

blimey 0.5mm....like a five o'clock shadow...not worth messing....Gaz

**Dan** · 11-11-2007

I'd strip it off where you can. Consider using a decent trowel for the walls as those tiles are not small. You want 100% adhesive coverage throughout, meaning when you check the coverage as you're fixing them the adhesive should fully cover the back of the tile.... leaving no air pockets. (I think 80 - 100% is british standard for wet areas but I'd still go for 100 due to the tile size)

11-11-2007

Quote:

Originally Posted by zzr-matt

Cheers for the replies guys

So if I use a trowel with 10mm x 10mm notches with a 10mm spacing for the floor and wall then I wont go far wrong?

How much of the previous tile residue do I need to remove? At the moment its stripped back but you can see some areas have a smidge of the previous adhesive left. I'd say its around 0.5mm thick or so? Worth stripping that off too?

Can you clarify Matt, what this is referring to please... thanks

zzr-matt · 12-11-2007

Quote:

Originally Posted by len

Quote:

Originally Posted by zzr-matt

So if I use a trowel with 10mm x 10mm notches with a 10mm spacing for the floor and wall then I wont go far wrong?

Can you clarify Matt, what this is referring to please... thanks

Hi what I meant was the trowel should have a notch that is 10mm wide and 10mm deep then a gap of 10mm then another notch 10mm wide and 10mm deep. I'm sure I saw a trowel somewhere that had 10mm wide and 10mm deep notches but only a 6mm gap between them.

**Dave** · 12-11-2007

hi mat..if you use a trowel that has teeth deeper than they are wide then this is a solid bed type and is much better to use to get a solid fix.......

zzr-matt · 12-11-2007

Cheers, I get ya. Any links to places to buy from?