to bb or not to bb?

[CJ]

Stone tiles = Always back skim for bonding issues and consistency of shading on moisture sensitive stones.

Porcelain tiles = more heavy profile to back so back skim for easier solid bed.

Ceramc tiles = no profile worth worrying about , so notch trowel and wiggle wiggle


Any tiler worth his salt will know this..

I prefer, and this is just personal preference.............Squidge Squidge.

 

[trevortine]

if you use the right trowel i cant see the need for back buttering the tile myself

If you use the right tiler then he can. :hurray:

 

[Peter]

Adhesive bites into ceramic a bit better so wouldn't bother with skimming in some situations but for anything over 300x300 I would. Don't think a true solid bed is ever really attainable but back skimming certainly helps the coverage and gives a more solid bond.

 

[SJPurdy]

I often get criticised by other "tilers" because I back butter medium/large format tiles which takes longer and they don't bother even though clearly recommended by BS and adhesive manufacturers. What I found more interesting in the video is that I've only seen one other tiler keying in the adhesive to the substrate before combing it! In the video it also states that non modified adhesive is recommended to go with the ditra mat (something I've also seen on this forum or another). Can anyone clarify this as generally i'm fixing porcelain which needs a modified adhesive to stick to it.

 

[DHTiling]

Can i just add ... The video is american and Schluter.com do state unmodified adhesive..

So if you want correct advice then plz stick to UK regs etc.. and schluter.uk say modified is ok.