Adhesive

[MarkG]

I'm about to tile a number of walls and floors. I've done a little tiling before but only with smaller tiles so I'd like to check I'm getting the adhesive thickness right for larger tiles;
600x300 porcelain on a wall (one is part of a shower), is an 8mm towel to leave a 4mm thickness of adhesive enough or not enough?
The same tiles on the floor I've thinking I should use a 12mm towel to leave a 6mm thickness of adhesive. Again enough or not enough?

What are your thoughts?
Thanks

[nod]

The thickness of the tile dictates the thickness of adhesive 

12 mil tile 12 mil adhesives 

I wouldn’t ever go less than 8 for anything other than sticking matting down 

 

Bagged adhesive is better to use and cheaper than the tub stuff 

Edited March 1, 2021 by nod

[MarkG]

Thanks Nod

These are 9mm tiles so you're saying 10mm on the floor would be best and use the same for the walls?

 

There are so many contradicting views out there.

[Nickfromwales]

Depends if the substrates are nice and flat? 

Whichever you lay the notched bed onto, the opposing face should be buttered, eg to have a thin wet skim of adhesive applied immediately prior to affixing the tile. Powder adhesive in a shower area is a no brainer, and most tub adhesive is shite on a good day, especially with zero-porosity porcelain. Get the standard or extended set adhesive and NOT rapid set. That way you'll have at least an hour open time with a bucket of goop before having to clean down and do a fresh mix. 

Edited March 2, 2021 by Nickfromwales